2012年5月30日星期三

About pencycuron :Ternary Fungicidal Mixtures


Ternary fungicidal mixtures comprising, as active components,
1) the triazolopyrimidine derivative of the I, 5-chloro-7-(4-methylpiperidin-1-yl)-6-(2,4,6-trifluorophenyl)-[1,2,4]triazolo[1,5-a]pyrimidine
and
2) a strobilurin derivative II, selected among the compounds pyraclostrobin and orysastrobin
and
3) a fungicidally active compound III selected the group consisting of acylalanines, amine derivatives, anilinopyrimidines, antibiotics, azoles, dicarboximides, dithiocarbamates, copper fungicides, nitrophenyl derivatives, phenylpyrroles, sulfenic acid derivatives, cinnamides and analogs and anilazine, benomyl, boscalid, carbendazim, carboxin, oxycarboxin, cyazofamid, dazomet, dithianon, famoxadone, fenamidone, fenarimol, fuberidazole, flutolanil, furametpyr, isoprothiolane, mepronil, nuarimol, picobenzamid, probenazole, proquinazid, pyrifenox, pyroquilon, quinoxyfen, silthiofam, thiabendazole, thifluzamide, thiophanate-methyl, tiadinil, tricyclazole, triforine, sulfur, acibenzolar-S-methyl, benthiavalicarb, carpropamid, chlorothalonil, cyflufenamid, cymoxanil, dazomet, diclomezin, diclocymet, diethofencarb, edifenphos, ethaboxam, fenhexamid, fentin acetate, fenoxanil, ferimzone, fluazinam, phosphorous acid, fosetyl, fosetyl-aluminum, iprovalicarb, hexachlorobenzene, metrafenon, pencycuron, propamocarb, phthalide, toloclofos-methyl, quintozene and zoxamide;
in a synergistically effective amount,
methods for controlling phytopathogenic harmful fungi using mixtures of the compounds I and II and III with a fungicidally active compound III and the use of the compounds I and II with III for preparing such mixtures, and also compositions comprising these mixtures. 



Yangzhou pioneer chemical CO.,LTD.

About dicamba :Mutant analysis in Arabidopsis provides insight into the molecular mode of action of the auxinic herbicide dicamba


BY: Gleason C, Foley RC, Singh KB.
Herbicides that mimic the natural auxin indole-3-acetic acid are widely used in weed control. One common auxin-like herbicide is dicamba, but despite its wide use, plant gene responses to dicamba have never been extensively studied. To further understand dicamba"s mode of action, we utilized Arabidopsis auxin-insensitive mutants and compared their sensitivity to dicamba and the widely-studied auxinic herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). The mutant axr4-2, which has disrupted auxin transport into cells, was resistant to 2,4-D but susceptible to dicamba. By comparing dicamba resistance in auxin signalling F-box receptor mutants (tir1-1, afb1, afb2, afb3, and afb5), only tir1-1 and afb5 were resistant to dicamba, and this resistance was additive in the double tir1-1/afb5 mutant. Interestingly, tir1-1 but not afb5 was resistant to 2,4-D. Whole genome analysis of dicamba-induced gene expression showed that 10 hours after application, dicamba stimulated many stress-responsive and signalling genes, including those involved in biosynthesis or signalling of auxin, ethylene, and abscisic acid (ABA), with TIR1 and AFB5 required for the dicamba-responsiveness of some genes. Research into dicamba-regulated gene expression and the selectivity of auxin receptors has provided molecular insight into dicamba-regulated signalling and could help in the development of novel herbicide resistance in crop plants.


Yangzhou pioneer chemical CO.,LTD.

Demand for formulated pesticides in China to reach 2.3mn tons in 2015


Demand for formulated pesticides in the agricultural market in China is forecast to rise 5.3 percent per annum to 2.3 million metric tons in 2015. In value terms, formulated pesticide demand is expected to rise 7.1 percent per year to ¥60 billion. Market gains will be primarily driven by increases in agricultural production as measured by the total area of sown land, and ongoing expansions in the production of fruits and vegetables, which are by far the most intensive users of pesticides relative to most other crops.
Improvements in pesticide variety and quality, especially those that result from a domestic industry that is becoming technically more proficient, will stimulate additional pesticide usage and further contribute to demand growth. Farmers will continue to see steadily increasing income, the result of rising crop prices and government subsidies designed to supplement their revenues and reduce their material costs. Subsidies aimed directly at cutting the cost of pesticides will encourage additional use. Furthermore, increased pesticide usage has become more feasible from an investment standpoint, as use of additional pesticides can greatly increase crop yield, which in turn bolsters farmers" income.
The improved revenues attributable to higher crop prices more than compensate for the cost of the pesticides. The outlook for the Chinese formulated pesticide industry remains good. Shipments are expected to grow 5.2 percent annually and net exports are forecast to rise to 717,000 metric tons, due to the competitive price of domestic products and improvements in their quality. Insecticides to remain largest market, fungicides to grow fastest Insecticides will remain the largest product type through 2015 despite a relatively slow growth rate of 3.7 percent per year. Established products will continue to dominate the market going forward while the trend toward using less-toxic insecticides will contribute to the slow rate of growth.
Herbicides will see strong growth in both shipments and demand through 2015, driven by a decrease in farming manpower and growth in export markets. Fungicides will post the fastest growth as farmers contend with resilient fungal problems. Pesticide active ingredient sales will advance 4.8 percent annually through 2015 to 765,000 metric tons. By weight, active ingredients comprised 26 percent of formulated pesticide shipments in 2010. Growth will be stimulated mainly by increasing exports of pesticide active ingredients, while heightened domestic production of formulated pesticides will further boost demand.
The Northwest is set to be the fastest growing regional market .The size, growth and composition of pesticide demand in China"s six regions vary considerably. The Central-East and Central-South will remain the two largest regional pesticide markets, together accounting for 70 percent of total demand in 2015. Demand in these regions will be driven by increasing output of high value crops. Growth in sales of pesticides in the Northwest will outpace that of other regions through 2015, benefiting from the Great Western Development Strategy.

Yangzhou pioneer chemical CO.,LTD.

2012年5月29日星期二

Combination of pencycuron and Pseudomonas fluorescens strain 2-79 for integrated control of rhizoctonia root rot and take-all of spring wheat


Pencycuron (tradename Monceren®, a fungicide developed specifically to control Rhizoctonia) was evaluated for in vitro growth inhibition of wheat pathogenic Rhizoctonia spp., Gaeumannomyces graminis var. tritici and Pythium spp., and for control of wheat root diseases in greenhouse trials. In the greenhouse, pencycuron inhibited binucleate Rhizoctonia, R. oryzae, or R. solani in vitro and reduced Rhizoctonia root rot. Pencycuron also inhibited G. graminis var. tritici strains in vitro and slightly reduced take-all disease in the greenhouse. Moreover, pencycuron seed treatment protected plants against a disease mixture of Rhizoctonia root rot and take-all. Pythium spp. were not inhibited by pencycuron in vitro. Pencycuron did not adversely affect seedling emergence, nor did it inhibit rhizosphere colonisation by Pseudomonas fluorescens biocontrol strain 2-79. Combined application of the fungicide and strain 2-79 to seed was more effective than either treatment alone for controlling disease. 



About dicamba : Regeneration capacity of mature embryo-derived callus in barley (hordeum vulgare l.)


In this study, induction of regenerable callus from mature embryos in eight Turkish barley varieties was analysed by using different plant growth regulators (PGRs). Varying concentrations (0.5-4 mg l(-1)) of 2,4-dichlorophenoxyacetic acid (2,4-D) and dicamba (3,6-dichloro-o-anisic acid) were tested for callus induction from mature embryos. Highest percent of callus induction was observed in Bornova 92 variety (98.3%) on MS medium supplemented with 4 mg l(-1) dicamba. Calli were transferred to regeneration media with 0.5 mg l(-1) dicamba, 0.5 mg l(-1) zeatin riboside (ZR) and 2 mg l(-1) thidiazuron (TDZ). Low concentrations of dicamba induced multiple shoots during callus regeneration. When the effect of precultivation with 2,4-D or dicamba on the shoot induction were evaluated, lower concentrations (< 4 mg l(-1)) of auxins have been found optimal. On the regeneration medium with 0.5 mg l(-1) [url=http://www.pioneer-chem.com/productsclass.asp?BigClassName=Herbicide]dicamba[/url, shoots were able to elongate up to 20 cm and shoot numbers were between 1-23 per callus. The use of ZR led to formation of short shoot buds and somatic embryos in 2 weeks period. The effect of TDZ was different from other PGRs by inducing green solid sectors on calli surfaces (Total 51 sectors/20 callus/Akhisar variety). Five plantlets have been grown from these solid cell clumps and transferred to specific media for root formation. As a result, five varieties (Suleyman Bey, Bornova 92, Vamyk Hoca, Kaya and Akhisar) tested in our study showed the potential to produce regenerable callus by using low amounts of dicamba or TDZ. The optimization process starts from culturing embryos to plantlet formation took nearly 4 weeks.] 


Yangzhou Pioneer Chemical strictly performs the modern enterprise management system


In2010, Yangzhou Pioneer Chemical passed ISO9001:2008 quality system certification,and operate ERP management system,implement the office automation. Pioneer Chemical have improved production chain of command,strict quality guarantee system and modern means of testing.
Quality is enterprise’s life, so strictly control product quality, establish product quality standards and packaging quality standards for the target market is every employee’s responsibility.
Yangzhou Pioneer Chemical Laboratory in accordance with the quality control standards of SGS,Shanghai Institute for Drug Control and other professional testing organizations,test random sampling of each batch of products, all goods must pass the analysis and insection before packing, and shipping.
In thefierce international market competition, “quality first,credit first” is our goal,and “quality management” is our persistent faith.

2012年5月28日星期一

Effect of pencycuron on the osmotic stability of protoplasts of Rhizoctonia solani


Pencycuron shows a specific inhibitory activity on the mycelial growth of Rhizoctonia solani. Even in the same anastomosis groups (AGs), e.g. AG4, there are both isolates sensitive and less sensitive (inherently resistant) to pencycuron. The regeneration of colonies from protoplasts of R-C (pencycuron-sensitive isolate in AG4) significantly decreased by the osmotic shock in the presence of pencycuron, while such effect was cancelled by washing off the chemical prior to the osmotic shock. However, in Rh-131 (a less sensitive isolate in AG4), the application of the chemical appeared to stimulate the regeneration from protoplasts. Further the measurement of optical density of protoplasts suspensions was performed to elucidate the effect of pencycuron on the osmotic stability of protoplasts in a short period. The optical density of suspensions of R-C protoplasts rapidly declined in a short period of incubation by the osmotic shock in the presence of pencycuron, but the effect on Rh-131 protoplasts was not statistically significant regardless of the presence or the absence of the chemical. These results suggest that the cell membrane of the pencycuron-sensitive isolate (R-C) is specifically affected by pencycuron




Yangzhou pioneer chemical CO.,LTD. 

About dicamba: Response of Strip-tilled Cotton to Preplant Applications of Dicamba and 2,4-D


BY: Alan C. York, A. Stanley Culpepper, and Alexander M. Stewart
Conservation tillage is being adopted by cotton(Gossypium hirsutum L.) growers across the southeastern United States. Glyphosate is commonly applied prior to planting to control winter vegetation, but preplant control of certain weeds, especially cutleaf eveningprimrose (Oenothera laciniata Hill), requires 2,4-D or dicamba mixed with glyphosate. A field experiment was conducted at seven locations to determine response of strip-tilled cotton to dicamba diglycolamine salt at 280 and 560 g acid equivalent (a.e.) ha-1 or 2,4-D dimethylamine salt at 530 and 1060 g a.e. ha-1 applied 1 to 6 wk before planting (WBP). These rates are 1 and 2 times the labeled rates. No adverse effects on cotton were noted when 2,4-D was applied 3 or more WBP. Visible leaf distortion on more than 10% of the seedlings and stand reduction was noted at 1 of 7 locations when 2,4-D was applied 2 WBP and at 2 of 7 locations when applied 1 WBP. Cotton yield was not reduced by 2,4-D at 530 g ha-1 at any application time, and it was reduced by 2,4-D at 1060 g ha-1 applied 1 WBP at 1 of 7 locations. Dicamba at 280 g ha-1 applied 3 or more WBP did not cause leaf distortion or affect stands. Leaf distortion on more than 10% of seedlings was noted at 1 of 7 locations with 280 g ha-1 dicamba applied 2 WBP, but yield was unaffected regardless of time of application. Dicamba at 560 g ha-1 applied 3 WBP caused leaf distortion on more than 10% of the seedlings and reduced yield at 1 of 7 locations. Cotton response to dicamba, but not 2,4-D, was generally correlated with rainfall between application and planting.



Yangzhou pioneer chemical CO.,LTD. 

Five new pesticide common names approved by ISO


Source:ALan Wood 
The ISO Technical Committee on Common Names for Pesticides has provisionally approved five new active ingredient common names in March 2012. Afidopyropen, from Meiji Seika Pharma, is a novel insecticide being developed under the code name, ME5343, according to the Compendium of Pesticide Common Names (CPCN).
Clacyfos is a phosphonate ester of the phenoxyacetic herbicide 2,4-D from Central China Normal University. The name “lvxiancaolin” (氯酰草膦) is approved in China; the spelling “lüxiancaolin” is also used. The approvals also include two fungicides. Isofetamid is a thiophenecarboxamide fungicide from Ishihara Sangyo Kaisha being developed under the code name, IKF-5411. Mitsui Chemicals Agro’s carbamate fungicide tolprocarb was developed under code MTF-0301. Pyflubumide is a pyrazole acaricide from Nihon Nohyaku being developed under code NNI-0711.


Yangzhou pioneer chemical CO.,LTD. 

2012年5月25日星期五

The Secondary Effects of Pencycuron on the Formation of Giant Protoplasts and the Lipid Peroxidation of Rhizoctonia solani AG4


The secondary effects of pencycuron on cell membrane of Rhizoctonia solani AG4 were investigated by the observation of giant protoplast formation and lipid per&not;oxidaiton. Compared to protoplasts initially produced from the strains, protoplasts of R. solani R-C (sensitive strain) and Rh-131 (non-sensitive strain) increased in their size by 2.0-3.5 times 12 h after incubation in potato-dextrose broth containing novozyme (7 mg/ml) and β-glucuronidase (60 &micro;l/ml) with 0.6 M mannitol (pH 5.2). The increase of protoplast size in R-C was slightly inhibited from 13.8 &micro;m without pencycuron to 10.3 &micro;m with 1.0 &micro;g/ml of pencycuron. However, the size of giant protoplast of Rh-131 was not affected by the pencycuron treatment. Both strains R-C and Rh-131 did not exhibit the lipid peroxidation 12 h after the application of 1.0 &micro;g/ml pencycuron. The remarkable peroxidation of membrane lipid was observed only in R-C 24 h after pencycuron application, but not in Rh&not;131. Although the inhibition of giant protoplast forma&not;tion and the membrane lipid peroxidation were observed only in the sensitive strain R-C by pencycuron, it is diffi&not;cult to conclude that these are the primary mechanism of pencycuron. The mild activity of pencycuron on the inhibition of giant protoplast formation and late mem&not;brane lipid peroxidation in the fungicide-sensitive strain did not coincide with the dramatic activity of pencycu&not;ron in R. solani. Therefore, our results suggest that inhi&not;bition of giant protoplast formation and membrane lipid peroxidation is the secondary effect of pencycuron. 


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2, 4-D and Dicamba as a Harvest Aid


If broadleaf weeds are going to interfere with harvest, 2,4-D can be applied at 0.75 to 1.5 lbs/A (1.5 to 2 pts/A of a 4 lb/gal a.i. product) at the dough stage of spring wheat, barley or rye. Not all 2,4-D formulations are labeled for preharvest applications.
Some 2,4-D labels only allow use on wheat, others allow use on wheat and barley and others allow use on wheat, barley and rye. Choose a brand that is labeled for use on the intended small grain crop. An ester formulation will give better control and quicker burndown than amine formulation. If using an ester formulation, use a low volatile formulation to reduce vapor drift potential. If using an amine, at least 2 pts/A is needed for larger weeds. Do not expect good control on large pigweed or kochia or wild buckwheat. Large kochia and other weeds with large stems may not burn down and may stay green for an extended period.
2,4-D can be tank mixed with Glyphosate on spring wheat and durum for additional broadleaf control and grass control. See the following paragraph for restrictions and read the label.
The labels of most formulations of 2,4-D have a grazing restriction of no dairy and 7 days for meat animals and a 30 day have restriction. Do not feed straw to livestock.
Apply Dicamba at 0.5 pt/A + 2,4-D at 1 to 2 pt/A when wheat is in the hard dough stage and the green color is gone from the nodes of the stem. Dicamba will provide additional control of wild buckwheat, kochia, common lambsquarters, pigweed spp., sunflower, and Russian thistle.

Yangzhou pioneer chemical CO.,LTD.
 

Israel takes steps to limit pesticide exposure


Source:haaretz.com 
The inter-ministerial committee in Israel has opted to reduce the number of pesticides permitted for usage in the country"s horticultural sector. The Health Ministry made this announcement last week. It comes on the heels of a rise in complaints from the public concerning exposure to chemicals.
The committee decided that use of insecticides containing three types of organophosophate substances will be halted in two months, and use of other substances will be banned within two years.
The decision comes not just as result of public concerns, but also following the findings of research, which appears to show possible neurological effects due to exposure to certain pesticide ingredients. Researchers have stated that those working in the agricultural sector could be at risk, as could pregnant women in the vicinity of treated crops.
The Agriculture Ministry announced that it is working to obtain approval of new guidelines that would ban the use of insecticides within 100 meters of homes, and require the ground to be covered with plastic sheeting at distances of 100-350 meters from residential areas.
The Environmental Protection Ministry noted that a study it commissioned from the Technion to simulate the spread of insecticides is soon to be completed. Based on the results, decisions will be made regarding steps to protect the population.

Yangzhou pioneer chemical CO.,LTD.
 

2012年5月22日星期二

About pencycuron : Efficacy of fungicidal seed treatments against pre-emergence damping-off and post-emergence seedling root rot of growth chamber grown canola caused by Rhizoctonia solani AG-2-1 and AG-4


Authors Kataria, H. R.; Verma, P. R.
Twenty-one fungicides were tested in vitro against the mycelial growth of an AG-2-1 and an AG-4 isolate of R. solani. Sixteen of these fungicides were evaluated as seed treatments against pre-emergence damping-off and 8 against post-emergence seedling root rot of canola [rape] cv. Westar (Brassica napus) and cv. Tobin (B. campestris). Seed was planted in soilless mix infested with an isolate of AG-2-1 or AG-4, or their mixture. Benodanil, benomyl, carbathiin (carboxin), cyproconazole, flutolanil, furmecyclox, iprodione, thiabendazole and tolclofos-methyl showed strong in vitro activity against both isolates. Fenpropimorph, flusilazole, propiconazole, triadimenol and vinclozolin had moderate activity and tebuconazole, triadimefon and chlorothalonil poor activity; while fenarimol, imazalil and nuarimol were ineffective against both isolates. Pencycuron gave very strong inhibition of the AG-2-1 isolate but was ineffective against the AG-4 isolate. Fenpropimorph, furmecyclox, iprodione and tolclofos-methyl, applied to Westar and Tobin seed at 1 g a.i./kg, provided about 90% control of pre-emergence damping-off in pots infested with either isolate AG-2-1, AG-4 or both. Furmecyclox and iprodione at 2-4 g a.i./kg were the most effective fungicides against post-emergence seedling root rot caused by the AG-2-1 isolate. Cyproconazole provided 90% control against damping-off (AG-2-1) at the lowest rates of 0.03 and 0.12 g a.i./kg seed of Westar and Tobin, respectively, but gave poor control of seedling root rot. Generally a higher quantity of fungicide was required in cv. Tobin than in cv. Westar for an equivalent level of disease control. This was related to the larger number of seeds per g in Tobin (418) than in Westar (277).



A report about pioneer chemical’s dicamba


Dicamba (3,6-dichloro-2-methoxybenzoic acid) has proven to be a highly beneficial herbicide. It is normally applied as the dimethylamine salt. Unfortunately, this salt has a volatility that causes the product, under certain conditions of application, to come into contact with desirable plants, such as soybeans, that it can damage. This is caused by its volatility.
It is therefore an object of the present invention to find a derivative of dicamba that will maintain or improve the beneficial properties of the product while lowering the volatility.
It is another object of the present invention to locate a compound that has the herbicidal properties of dicamba with enhanced solubility characteristics.
Other objects of the present invention will be seen from the ensuing description.
It has been found that the 2-(2"-aminoethoxy)ethanol salt of dicamba (3,6-dichloro-2-methoxybenzoic acid) decreases the volatility and improves other less advantageous properties of dicamba without detracting from its beneficial herbicidal properties.
Dicamba was described and patented in U.S. Pat. No. 3,013,054 issued Dec. 12, 1961. Since that time it has become a valuable herbicidal product, particularly in the control of weeds in corn. While it is safe to corn plants, it does not harm certain other beneficial crops, such as soybeans. Consequently, care must be taken so that it does not come into contact with such plants.
Dicamba is normally applied as the dimethylamine salt. Unfortunately, this salt is sufficiently volatile that the product applied to a corn crop can come into contact and injure adjacent crops, such as soybeans. This problem cannot be readily solved by the use of additives or other means except very careful application procedures under specified weather conditions. This is often very difficult to accomplish.
It has now been found that by using the previously unknown 2-(2"-aminoethyoxy)ethanol salt of dicamba that the product has a sufficiently low volatility, so as to prevent the product from volatilizing onto undesired valuable crops, and improved solubility without any loss of herbicidal properties. 


A widely used farm pesticide first introduced


By Miguel Llanos, msnbc.com
A widely used farm pesticide first introduced in the 1990s has caused significant changes to bee colonies and removing it could be the key factor in restoring nature"s army of pollinators, according to two studies released Thursday.
The scientists behind the studies in Europe called for regulators to consider banning the class of chemicals known as neonicotinoid insecticides. In the U.S., the Environmental Protection Agency told msnbc.com that the studies would be incorporated into a review that"s currently under way.
A pesticide trade group questioned the data, saying the levels of pesticide used were unrealistically high, while the researchers said the levels used were typical of what bees would find on farms.
"Our study raises important issues regarding pesticide authorization procedures," stated Mikael Henry, co-author of a study on honey bees. "So far, they mostly require manufacturers to ensure that doses encountered on the field do not kill bees, but they basically ignore the consequences of doses that do not kill them but may cause behavioral difficulties."
"There is an urgent need to develop alternatives to the widespread use of neonicotinoid pesticides on flowering crops wherever possible," added the authors of the second study on bumble bees.
Last week, a coalition of environmental groups and beekeepers asked the EPA to suspend the use of the pesticide, which is widely used in flowering crops like corn, sunflower and cotton to combat insects.
The studies are the first to go outside the lab and into the fields, where the experts said they detected how the pesticide impacts bees as they collect pollen and pollinate flowers and crops.
Honey bee populations have been crashing around the world in recent years, and pesticides have been suspected, along with other potential factors such as parasites, disease and habitat loss, in what"s known as Colony Collapse Disorder. In the U.S., some beekeepers in 2006 began reporting losses of 30-90 percent of their hives, according to the U.S. Department of Agriculture.
Combating Colony Collapse Disorder is hardly an esoteric exercise. The USDA notes that "bee pollination is responsible for $15 billion in added crop value, particularly for specialty crops such as almonds and other nuts, berries, fruits, and vegetables.
"About one mouthful in three in the diet directly or indirectly benefits from honey bee pollination," it adds.
, one study by British scientists looked at honey bees and the other by French scientists examined bumble bees, which unlike honey bees live in the wild but also are key pollinators.
In the bumble bee study, researchers concluded that colonies treated with nonlethal levels of the pesticide "had a significantly reduced growth rate and suffered an 85% reduction in production of new queens" compared to colonies without the pesticide.
"It was quite massive," researcher Penelope Whitehorn said of the reduction at a press conference Thursday. "Bumble bees have an annual life cycle and it is only new queens that survive the winter to found colonies in the spring," the authors noted. "Our results suggest that trace levels of neonicotinoid pesticides can have strong negative consequence for queen production by bumble bee colonies under realistic field conditions, and this is likely to have a substantial population-level impact."
In the honey bee study, radio transmitters were attached to the back of bees to see how they foraged in conditions with and without the pesticide.
The pesticide, the researchers concluded, impaired the homing ability of bees and exposed bees were two to three times more likely to die while away from the hive. That "high mortality ... could put a colony at risk of collapse" within a few weeks of exposure, especially in combination with other stressors, they noted.
"We were actually quite surprised by the magnitude," Henry told reporters.
CropLife America, a pesticides trade group, said in a statement that the studies "fail to account for the many real-world factors that impact bee and colony health, and the researchers used unrealistic pesticide dose levels that are not commonly found in practical field situations in agriculture."
Dave Goulson, a University of Stirling researcher with the bumble bee study, countered that the scientific papers "are the closest studies to date to look at the real world situation."
A leading U.S. researcher said the honey bee study "did use a higher dose than we have seen in pollen and nectar."
That study is "not fatally flawed," added Jeff Pettis of the USDA"s Bee Research Laboratory, "but the higher dose must be considered as being a factor in why they saw the loss of bees."
"The bumble bee study, however, used a very realistic dose and the effect on reproduction was the major finding," he told msnbc.com. "The bumble bee study was very convincing in my opinion in being realistic and showing a significant impact on reproduction."
CropLife America spokeswoman Mary Emma Young said the dose in the bumble bee study was "a high level, but not as excessive" as in the honey bee study, and that "similar studies on bumble bees did not show these effects, so more research may be needed."
In the honey bee study, the authors said they tested the bees at an "intensive cereal farming system" in France and used sublethal amounts of thiamethoxam, "a recently marketed neonicotinoid substance currently being authorized in an increasing number of countries worldwide for the protection of oilseed rape, maize and other blooming crops foraged by honey bees."
Goulson noted that EPA rules don"t require pesticide makers to test the product as bees navigate over natural distances and yet that "is where the problems seem to start."
The EPA, contacted by msnbc.com, said it has "begun reviewing the two studies ... and they will be considered" as part of an ongoing process that reviews chemicals. Non-EPA scientists will weigh in at a special meeting in the fall, it added.
The prevailing view among most scientists and regulators is that "complex interactions among multiple stressors" are to blame, the EPA stated. "While our understanding of the potential role of pesticides in pollinator health declines is still progressing, we continue to seek to learn what regulatory changes, if any, may be effective."

Yangzhou pioneer chemical CO.,LTD

2012年5月20日星期日

The article about pencycuron


potato processor wages war on waste james?andrews tuesday 01 february 2011 13:40 
inefficiencies in the potato supply chain mean almost half the tubers grown for a retail 
crop won"t make it to the consumer, an industry research project has found. the war on waste 
project, carried out by processing firm , which supplies found that for every 1000t of 
potatoes produced for packing, just 583t made it to the customer. that meant 42% of the crop 
was wasted through inefficiencies from the moment the crop was planted to the day it left 
the retail outlet, said simon bowen, the firm"s agronomy director. field losses through 
bruising, uneven tuber size and poor quality accounted for 6% of losses, while defects 
removed during grading, such as damaged tubers, greens and rots, totalled 12%, he told 
delegates. sprouting, disease and weight loss in the store made up 5% of rejections, but the 
biggest percentage was lost in the pack house, with 22% removed due to defects spotted after 
washing alone. however, this figure might be lower for other retailers, as waitrose demanded 
a high specification, he admitted. rejections from packing, distribution and the retail 
store was no more than 5% in total, he noted. retailers and the supply chains they support 
were coming under increasing scrutiny and food waste would have to be reduced, said dr 
bowen. planting crops in unsuitable soils was the biggest contributor to waste, followed by 
a lack of suitable irrigation and pest and disease management, the study found. size, shape, 
greens and damage were the main reasons for gross defects, and weight loss was the biggest 
contributor in-store. in the pack-house, greens, damage, scab and skin disease were the main 
culprits. although losses occurred at all levels of the supply chain, improving management 
of the crop in the field was the most important place to start, said dr bowen. "quality is 
made in the field, not the pack-house." solanum recently dropped to 30 of the best growers 
from a network of 130, to help meet its target of reducing waste to 35% by the end of the 
project in 2013, said dr bowen. "this was a big rationalisation, but allowed us to work more 
closely with fewer growers and improve agronomy and efficiency." the firm is now helping 
these growers to cut waste by improving soil, water and seed management, and in 2009 they 
managed to reduce waste by 4%. war on waste is a five-year project which started in 2008 to 
assess the level of waste produced in the potato supply chain and come up with practical 
solutions to reduce it. conference bites pvy concern levels of pvy infection in scottish 
seed crops were expected to be high in 2011, meaning some seed crops could be downgraded, 
said jon pickup, head of virology and zoology for numbers of rose grain aphids - the main 
pvy vector - has been increasing steadily for the past three years, and sasa"s virus model 
predicted 32% of the 2011 crop would be infected with pvy. this level of infection meant 6-
7% of the seed crop could be downgraded, he said. it was already too late to protect this 
season"s crop, as virus would have already been transmitted, but growers should act now to 
protect next year"s crop, he warned. watching residues government monitoring of chemical 
residues in potatoes had found a number of active ingredients, including those that would 
not normally be expected, said john sarup, senior potato consultant for sac. these included 
seed treatments pencycuron, iprodione and soil treatment axoxystrobin. growers should 
be more careful when using chemical products at all stages of crop management to avoid 
contamination, he said. "if we are found to be using pesticides inappropriately, we will 
lose them." to plough or not to plough ploughing is energy intensive and time consuming and 
growers should consider if they need to do it, said stuart wale, team leader for sac. almost 
all potato crops in the uk are established behind the plough, but other countries were 
successfully using non-inversion tillage, he said. power-harrowing ground without ploughing 
could halve fuel and labour costs and reduce erosion, he added. elephant in hiding elephant 
hide is a condition that causes a coarse russeting on tubers. it is not well understood and 
is difficult to diagnose, as the effect on tubers can vary, said sac potato pathologist, 
daan kiezebrink. elephant hide can be linked to rhizoctonia, in which case amistar 
(azoxystrobin) could be an effective treatment. but there are other causes, too, he said.

Toxicokinetics of dicamba (3,6-dichloro-2-methoxy-benzoic acid) and its 3,5-dichloro isomer following intravenous administration to rats


BY: Moheb H. Makary, Joseph C. Street, Raghubir P. Sharma
The distribution and elimination of dicamba (3,6-dichloro-2-methoxy benzoic acid) and another isomer present in dicamba formulation (3,5-dichloro-2-methoxy benzoic acid) were studied in rats following single intravenous injections. Concentrations of dicamba and the isomer were measured at various times in whole blood by EC-GLC after extraction and derivatization with diazomethane. The isomer had different toxicokinetic parameters compared to dicamba. The elimination of dicamba from the blood was rapid with a biological half-life of 0.64 hr (following 100 mg/kg iv dose) while the elimination of the isomer from the blood was much slower with a biological half-life of 16.5 hr (following 20 mg/kg iv dose). However, upon combined dosing of the two compounds the elimination rate constant of dicamba significantly decreased. The isomer had a greater degree of binding to blood serum proteins than dicamba.



Yangzhou pioneer chemical CO.,LTD. 

About USA pesticides :U.S. EPA seeks comment to protect salmon from pesticides


Source:U.S. EPA News Release 
The EPA is seeking comments on draft Reasonable and Prudent Measures (RPMs) and Alternatives (RPAs) included in a draft Biological Opinion received from the National Marine Fisheries Service (NMFS). This draft Biological Opinion addresses the potential effects from the pesticide thiobencarb on Pacific salmon and steelhead listed as endangered or threatened under the Endangered Species Act. A second pesticide, molinate, is also included in this Biological Opinion; however at the request of the registrants all uses were cancelled effective July 30, 2008, and the last use date was August 31, 2009. The comment period will be closed on June 12, 2012.


Yangzhou pioneer chemical CO.,LTD. 

2012年5月18日星期五

About pencycuron: An evaluation of pesticide stress induced proteins in three cyanobacterial species- anabaena fertilissima, aulosira fertilissima and westiellopsis prolifica using sds-page


BY:Nirmal Kumar, Rita N. Kumar, Anubhuti Bora and Manmeet Kaur Amb
The whole-cell protein-profiling technique was evaluated for studying differences in banding pattern of three different species of Cyanobacteria i.e. Anabaena fertilissima Aulosira fertilissima and Westiellopsis prolifica under the influence of four different pesticides-2,4-D (Ethyl Ester of 2,4-Dichloro Phenoxy Acetic Acid), Pencycuron (N-[(4-chlorophenyl)methyl]-Ncyclopentyl-N"–phenylurea), Endosulfan (6,7,8,9,10,10hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine-3-oxide) and Tebuconazole (1-(4-Chlorophenyl)-4,4-dimethyl-3-(1,2,4-triazol-1-ylmethyl)pentan-3-ol). Whole-cell extracts were obtained by sonication treatment (Sonifier cell disruptor -Branson Digital Sonifier S-450D, USA) and were analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). SDS-PAGE analyses of the total protein profile of Anabaena fertilissima, Aulosira fertilissima and Westiellopsis prolifica showed a linear decrease in the protein content with increasing pesticide stress when administered to different concentrations of 2, 4-D, Pencycuron, Endosulfan and Tebuconazole. The results indicate that different stressors exert specific effects on cyanobacterial protein synthesis.



Yangzhou pioneer chemical CO.,LTD. 

About dicamba: Control of common waterhemp (Amaranthus tuberculatus var. rudis) in corn and soybean with sequential herbicide applications


By: Soltani, Nader
Soltani, N., Vyn, J. D. and Sikkema, P. H. 2009. Control of common waterhemp (Amaranthus tuberculatus var. rudis) in corn and soybean with sequential herbicide applications. Can. J. Plant Sci. 89: 127-132. Common waterhemp (Amaranthus tuberculatus) is an aggressive annual broadleaf whose distribution is expected to increase rapidly in agricultural land in eastern Canada. Eight field experiments (four in corn and four in soybean) over a 2-yr period (2005 and 2006) were established on two Ontario farms (near Comber and Petrolia, Ontario) with waterhemp infestations to evaluate the efficacy of various PRE- and POST-emergence herbicides applied alone or in sequence for the control of waterhemp in corn and soybean. There was minimal injury (up to 3.8%) to corn and soybean from the herbicide treatments evaluated. In corn, sequential herbicide programs of isoxaflutole+atrazine PRE fb either dicamba POST, dicamba/diflufenzopyr POST, dicamba/atrazine POST or mesotrione+atrazine POST provided consistent full-season control of waterhemp. Corn yield was reduced 48% when waterhemp was not controlled. Corn yield was equivalent to the weed-free check with the herbicide treatments evaluated. In soybean, PRE or POST herbicides alone provided 41 to 94% control of waterhemp, however, waterhemp control was increased to 90 to 99% with the sequential herbicide programs. Dimethenamid (PRE; 1250 g ha(-1)) followed by glyphosate (POST1; 900 g ha(-1)) followed by glyphosate (POST2; 900 g ha(-1)) controlled waterhemp 99%. Results with waterhemp density and biomass were similar to visible control. Soybean yield was reduced 41% when waterhemp was not controlled. Soybean yield was equivalent to the weed-free check with all the herbicide treatment except dimethenamid PRE, acifluorfen POST1 and fomesafen POST1 where the yield was 30, 19, and 19% lower, respectively.


Yangzhou pioneer chemical CO.,LTD. 

Effect Contrast of 20 Pesticides again Main Insect Pests on Vegetables


By: Wang Jianxin; Zhang Guisong; Hong Wenying; Zhang Ya; Huang Yihong; Liu Yinquan; Shi Zhuhua; Zhang Guangmei;
Because spodoptera exigua Hubner occurred less generations a year and damaged seriously by its larva outbreak,it was controlled by spraying high effective pesticides,namely chlorfluazuron or tebufenozide during peak of larvae and chlorpyrifos,tralomethrin or methomyl during84%larvae occur -ring.Because plutella xylostella(L.)occurred more generations a year and damaged seriously by suddenly in creasing the number of larvae,it was controlled by spraying persistent pesticides,namely abamectin or Bt during1

Yangzhou pioneer chemical CO.,LTD. 

2012年5月17日星期四

Using pioneer chemical fungicide : pencycuron


Black scurf is caused by Rhizoctonia solani, which can result in the brown/black sclerotia, or lumps on the tuber surface and is also responsible for stem canker. Stem and stolon canker can influence emergence, stem number, tuber number and tuber size distribution.
Seed borne disease is the main source of the inoculum in Northern Ireland and can be controlled by a range of seed treatments, however localised sources of soil borne inoculum can be important.
Research conducted by the Scottish Agricultural College has shown that the strobilurin fungicide, azoxystrobin (Amistar, 250g/litre) is effective against soil borne inoculum. Research from Cambridge University Farm indicates that a combination treatment of pencycuron (e.g. in Monceren IM) seed treatment followed by Amistar in-furrow provides best control of black scurf and stem canker.




Yangzhou pioneer chemical CO.,LTD. 

About dicamba: Studies on herbicides controlled release with crosslinked carboxymethylcellulose


By: Zhuo Renxi; Huang Long ;Zhu Zhifeng
Herbicides 2, 4, 5- T(2, 4, 5 - trichlorophenoxyacetic acid) , 2, 4 - D(2, 4 dichlorophenoxyacetic acid) and dicamba(3, 6 - dichloro - o - anisic acid) were individually encapsulated into crosslinked carboxymethylcellulose (CMC) for the evaluation of their controlled release properties. The release rate of the herbicides into water was greatly influenced by sample form, degree of substitution(DS) of CMC,water solubillity of the herbicides, kind and amount of crosslinking agents and condition for preparing samples. A better controlled release system was achieved by usinggranular sample prepared from the formaldehyde crosslinked CMC with lower DS.



Yangzhou pioneer chemical CO.,LTD. 

2011 China Pesticide Export 27% Up


Source:Agropages.com 
Recommended in: China Pesticide
2011 was the best year of China’s pesticide export since the 2008 downturn, export volume reached 1.40 million tons, 15.65% up year on year with the value amounting to $6.19 billion, 27.62% up year on year, according to the data from the Institute for the Control of Agrochemicals of Ministry of Agriculture (ICAMA).
In the year technical pesticides export reached 653,000 tons, up by 5.1%, accounting for 46.42% of the total quantity with value rose 25.3% to $3.91 billion, which accounting for 63.23% of the total value; pesticides formulation export reached 753,700 tons, 26.66% up year on year, accounting for 53.58% of the total quantity with value increased by 31.82% to $2.28 billion, accounting for 36.77% of the total value.
The statistics reveals a considerable growth of export of both pesticide technical and formulation in 2011, where formulation export growth appears to be noticeably higher than that of technical. The 53% formulation export exceeded half of the total export, which is a breakthrough in the past dominance of technical export, indicating a significant change of China’s pesticide export structure. Additionally the territory of export reached 181 countries and regions, which beat the record.
Also export varieties grew to a certain degree. Herbicides export accounted for 63.25% of the total quantity, reaching 891,200 tons, 15.15% up year on year, export value was $3.28 billion, up by 24.4%, accounting for 52.98% of the total value. Insecticides export reached 348,800 tons, up by 22.68%, which accounting for 24.8% of the total quantity with value amounting to US$1.848 billion, up by 34.4%, which accounting for 29.87% of the total value. Fungicides export reached 142,700 tons, 6.26% up year on year accounting for 10.14% of the total quantity. Plant growth regulator export reached 22,700 tons, 29.6% up, accounting for 1.61% of the total quantity


Yangzhou pioneer chemical CO.,LTD. 

2012年5月16日星期三

About pencycuron : Commission Implementing Directive 2011/49/EU


Commission Implementing Directive 2011/49/EU
of 18 April 2011
amending Council Directive 91/414/EEC to include pencycuron as active substance and amending Commission Decision 2008/934/EC
(Text with EEA relevance)
THE EUROPEAN COMMISSION,
Having regard to the Treaty on the Functioning of the European Union,
Having regard to Council Directive 91/414/EEC of 15 July 1991 concerning the placing of plant protection products on the market [1], and in particular Article 6(1) thereof,
Whereas:
(1) Commission Regulations (EC) No 451/2000 [2] and (EC) No 1490/2002 [3] lay down the detailed rules for the implementation of the third stage of the programme of work referred to in Article 8(2) of Directive 91/414/EEC and establish a list of active substances to be assessed, with a view to their possible inclusion in Annex I to Directive 91/414/EEC. That list included pencycuron.
(2) In accordance with Article 11e of Regulation (EC) No 1490/2002 the notifier withdrew its support of the inclusion of that active substance in Annex I to Directive 91/414/EEC within 2 months from receipt of the draft assessment report. Consequently, Commission Decision 2008/934/EC of 5 December 2008 concerning the non-inclusion of certain active substances in Annex I to Council Directive 91/414/EEC and the withdrawal of authorisations for plant protection products containing these substances [4] was adopted on the non-inclusion of pencycuron.
(3) Pursuant to Article 6(2) of Directive 91/414/EEC the original notifier (hereinafter "the applicant") submitted a new application requesting the accelerated procedure to be applied, as provided for in Articles 14 to 19 of Commission Regulation (EC) No 33/2008 of 17 January 2008 laying down detailed rules for the application of Council Directive 91/414/EEC as regards a regular and an accelerated procedure for the assessment of active substances which were part of the programme of work referred to in Article 8(2) of that Directive but have not been included into its Annex I [5].
(4) The application was submitted to the Netherlands, which had been designated rapporteur Member State by Regulation (EC) No 1490/2002. The time period for the accelerated procedure was respected. The specification of the active substance and the supported uses are the same as were the subject of Decision 2008/934/EC. That application also complies with the remaining substantive and procedural requirements of Article 15 of Regulation (EC) No 33/2008.
(5) The Netherlands evaluated the additional data submitted by the applicant and prepared an additional report. It communicated that report to the European Food Safety Authority (hereinafter "the Authority") and to the Commission on 4 December 2009. The Authority communicated the additional report to the other Member States and the applicant for comments and forwarded the comments it had received to the Commission. In accordance with Article 20(1) of Regulation (EC) No 33/2008 and at the request of the Commission, the Authority presented its conclusion on pencycuron to the Commission on 24 September 2010 [6]. The draft assessment report, the additional report and the conclusion of the Authority were reviewed by the Member States and the Commission within the Standing Committee on the Food Chain and Animal Health and finalised on 11 March 2011 in the format of the Commission review report for pencycuron.
(6) It has appeared from the various examinations made that plant protection products containing pencycuron may be expected to satisfy, in general, the requirements laid down in Article 5(1)(a) and (b) of Directive 91/414/EEC, in particular with regard to the uses which have been examined and detailed in the Commission review report. It is therefore appropriate to include pencycuron in Annex I, in order to ensure that in all Member States the authorisations of plant protection products containing this active substance can be granted in accordance with the provisions of that Directive.
(7) Without prejudice to that conclusion, it is appropriate to obtain further information on certain specific points. Article 6(1) of Directive 91/414/EEC provides that inclusion of a substance in Annex I may be subject to conditions. Therefore, it is appropriate to require that the applicant submit confirmatory information as regards the fate and behaviour in soil of the chlorophenyl and cyclopentyl portions of pencycuron, the fate and behaviour in natural surface water and sediment systems of the chlorophenyl and phenyl portions of pencycuron, the long-term risk to large omnivorous mammals.
(8) A reasonable period should be allowed to elapse before an active substance is included in Annex I in order to permit Member States and the interested parties to prepare themselves to meet the new requirements which will result from the inclusion.
(9) Without prejudice to the obligations defined by Directive 91/414/EEC as a consequence of including an active substance in Annex I, Member States should be allowed a period of 6 months after inclusion to review existing authorisations of plant protection products containing pencycuron to ensure that the requirements laid down by Directive 91/414/EEC, in particular in its Article 13 and the relevant conditions set out in Annex I, are satisfied. Member States should vary, replace or withdraw, as appropriate, existing authorisations, in accordance with the provisions of Directive 91/414/EEC. By derogation from the above deadline, a longer period should be provided for the submission and assessment of the complete Annex III dossier of each plant protection product for each intended use in accordance with the uniform principles laid down in Directive 91/414/EEC.
(10) The experience gained from previous inclusions in Annex I to Directive 91/414/EEC of active substances assessed in the framework of Commission Regulation (EEC) No 3600/92 of 11 December 1992 laying down the detailed rules for the implementation of the first stage of the programme of work referred to in Article 8(2) of Council Directive 91/414/EEC concerning the placing of plant protection products on the market [7] has shown that difficulties can arise in interpreting the duties of holders of existing authorisations in relation to access to data. In order to avoid further difficulties it therefore appears necessary to clarify the duties of the Member States, especially the duty to verify that the holder of an authorisation demonstrates access to a dossier satisfying the requirements of Annex II to that Directive. However, this clarification does not impose any new obligations on Member States or holders of authorisations compared to the directives which have been adopted until now amending Annex I.
(11) It is therefore appropriate to amend Directive 91/414/EEC accordingly.
(12) Decision 2008/934/EC provides for the non-inclusion of pencycuron and the withdrawal of authorisations for plant protection products containing that substance by 31 December 2011. It is necessary to delete the line concerning pencycuron in the Annex to that Decision.
(13) It is therefore appropriate to amend Decision 2008/934/EC accordingly.
(14) The measures provided for in this Directive are in accordance with the opinion of the Standing Committee on the Food Chain and Animal Health,
HAS ADOPTED THIS DIRECTIVE:
Article 1
Annex I to Directive 91/414/EEC is amended as set out in the Annex to this Directive.
Article 2
The line concerning pencycuron in the Annex to Decision 2008/934/EC is deleted.
Article 3
Member States shall adopt and publish by 30 November 2011 at the latest the laws, regulations and administrative provisions necessary to comply with this Directive. They shall forthwith communicate to the Commission the text of those provisions and a correlation table between those provisions and this Directive.
They shall apply those provisions from 1 December 2011.
When Member States adopt those provisions, they shall contain a reference to this Directive or be accompanied by such a reference on the occasion of their official publication. Member States shall determine how such reference is to be made.
Article 4
1. Member States shall in accordance with Directive 91/414/EEC, where necessary, amend or withdraw existing authorisations for plant protection products containing pencycuron as an active substance by 30 November 2011.
By that date they shall in particular verify that the conditions in Annex I to that Directive relating to pencycuron are met, with the exception of those identified in part B of the entry concerning that active substance, and that the holder of the authorisation has, or has access to, a dossier satisfying the requirements of Annex II to that Directive in accordance with the conditions of Article 13 of that Directive.
2. By way of derogation from paragraph 1, for each authorised plant protection product containing pencycuron as either the only active substance or as one of several active substances all of which were listed in Annex I to Directive 91/414/EEC by 31 May 2011 at the latest, Member States shall re-evaluate the product in accordance with the uniform principles provided for in Annex VI to Directive 91/414/EEC, on the basis of a dossier satisfying the requirements of Annex III to that Directive and taking into account part B of the entry in Annex I to that Directive concerning pencycuron. On the basis of that evaluation, they shall determine whether the product satisfies the conditions set out in Article 4(1)(b), (c), (d) and (e) of Directive 91/414/EEC.
Following that determination Member States shall:
(a) in the case of a product containing pencycuron as the only active substance, where necessary, amend or withdraw the authorisation by 31 May 2015 at the latest; or
(b) in the case of a product containing pencycuron as one of several active substances, where necessary, amend or withdraw the authorisation by 31 May 2015 or by the date fixed for such an amendment or withdrawal in the respective Directive or Directives which added the relevant substance or substances to Annex I to Directive 91/414/EEC, whichever is the latest.
Article 5
This Directive shall enter into force on 1 June 2011.
Article 6
This Directive is addressed to the Member States.
Done at Brussels, 18 April 2011.
For the Commission
The President
José Manuel Barroso
[1] OJ L 230, 19.8.1991, p. 1.
[2] OJ L 55, 29.2.2000, p. 25.
[3] OJ L 224, 21.8.2002, p. 23.
[4] OJ L 333, 11.12.2008, p. 11.
[5] OJ L 15, 18.1.2008, p. 5.
[6] European Food Safety Authority; Conclusion on the peer review of the pesticide risk assessment of the active substance pencycuron. Summary: EFSA Journal 2010; 8(10):1828. [53 pp.]. doi:10.2903/j.efsa.2010.1828. Available online: www.efsa.europa.eu
[7] OJ L 366, 15.12.1992, p. 10.
--------------------------------------------------
ANNEX
The following entry shall be added at the end of the table in Annex I to Directive 91/414/EEC:
No | Common name, identification numbers | IUPAC name | Purity [1] | Entry into force | Expiration of inclusion | Specific provisions |
"354 | Pencycuron CAS No 66063-05-6 CIPAC No 402 | 1-(4-chlorobenzyl)-1-cyclopentyl-3-phenylurea | ≥ 980 g/kg | 1 June 2011 | 31 May 2021 | PART AOnly uses as fungicide may be authorised.PART BFor the implementation of the uniform principles of Annex VI, the conclusions of the review report on pencycuron, and in particular Appendices I and II thereof, as finalised in the Standing Committee on the Food Chain and Animal Health on 11 March 2011 shall be taken into account.In this overall assessment Member States shall pay particular attention to the protection of large omnivorous mammals.Conditions of use shall include risk mitigation measures, where appropriate.The Member States concerned shall request the submission of confirmatory information as regards:(1)the fate and behaviour in soil of the chlorophenyl and cyclopentyl portions of pencycuron;(2)the fate and behaviour in natural surface water and sediment systems of the chlorophenyl and phenyl portions of pencycuron;(3)the long-term risk to large omnivorous mammals.The Member States concerned shall ensure that the applicant submits to the Commission the information set out in points (1), (2) and (3) by 31 May 2013." |
[1] Further details on identity and specification of active substance are provided in the review report.



Yangzhou pioneer chemical CO.,LTD. 

Preparation of polyclonal antibody against dicamba and establishment of indirect competitive ELISA for dicamba detection


By: ZHANG Hua mei,LI Yin lai,PAN Xi ping,JIANG Ai lan,YU Zhen zhen,SHI Man ling
In order to establish the immunoassay method of dicamba(DIC),the diimine carbonization methods were used to synthesize immunogen and coating antigen by dicamba being conjugated to ovalbumin (OVA) and bovine serum albumin (BSA), respectively. The polyclonal antibodies against dicamba were prepared through immunizing New Zealand white rabbits with the immunogen. The enzymelinked immunosorbent assay (ELISA) titer of the antibody was 1∶1.28×105. The percentages of the antibody cross reactivity with other analogues of dicamba (2,3,5-trichlorobenzoic acid, 2,3,6-trichlorobenzoic acid and 2-amino-3,5-dichlorobenzoic acid) were all less than 01%. An indirect competitive ELISA (ciELISA) was developed for dicamba detection, with coating antigen and polyclonal antibody diluted at 1∶8000 and 1∶80000. The lineal range of the assay for detecting dicamba was 1 to 100 ng&#8226;mL-1, with the detection limit (IC20) of 1-779 ng&#8226;mL-1. The regression equation was y = 8.6844 ln x+15.001, R2=0.9944. When dicamba addition value was from 5 to 30 μg&#8226;kg-1 in the recovery tests, the recovery rate of dicamba in corn meal and wheat flour blank samples ranged from 53.08% to 92.37%, and 66.5% to 94.63%, respectively.


Yangzhou pioneer chemical CO.,LTD. 

Two companies selling of illegal pesticides


Source:U.S. EPA News Release 
The U.S. Environmental Protection Agency (EPA) has issued legal complaints against two Brooklyn stores for violating federal pesticides law by selling and distributing illegal pesticides. Products used to kill pests must be registered with EPA to ensure that they will not make people sick and contain labels with instructions on their proper use. In September 2011, EPA inspections of two Brooklyn establishments, Man Li Trading, Inc. at 5821 8th Avenue and Hong Kong Supermarket at 6023 8th Avenue, revealed that they were selling various pesticide products that had not been registered with the EPA. Among the unregistered products found were mosquito repellants, various types of mothballs and a toilet bowl cleaner.
"The sale of illegal pesticides puts the health and safety of our communities at risk,” said EPA Regional Administrator Judith A. Enck. "Store owners have a responsibility to make sure the pesticide products they sell have the required EPA labels. I encourage all retailers to check their shelves to make sure they are not endangering the health of their customers by selling illegal pesticides.”
Pesticides have been linked to various forms of illnesses in humans, ranging from skin and eye irritation to cancer. Some pesticides may also affect the hormone or endocrine systems. In many situations, there are non-chemical methods that will effectively control pests. The EPA recommends considering and using alternative methods as part of an overall pest management strategy.
The inspections that led to the two legal actions targeted stores in neighborhoods in Brooklyn, Manhattan and Queens. During these inspections, 350 illegal pesticide products were confiscated. Earlier this year, orders to stop the sale of the illegal pesticides discovered during the inspections were issued to both Man Li Trading and Hong Kong Supermarket.
Under federal pesticides law, all products sold in the U.S. that contain pesticides must be registered with the EPA. Before a pesticide product is registered, the producer of the product must provide data from tests conducted according to EPA guidelines to ensure that the product will not be harmful to people’s health. The EPA examines the ingredients and the way in which the product will be used, and assesses a wide variety of potential human health and environmental effects associated with its use. Distributors and retailers are responsible for ensuring that all pesticides distributed and sold fully comply with the law.

Yangzhou pioneer chemical CO.,LTD. 

2012年5月14日星期一

About pencycuron: Management of soilborne diseases of beetroot in Australia



BY: H. L. Martin
Soilborne fungal diseases threaten the viability of the Australian processing beetroot industry. Globally,
Pythium spp., Aphano,riyces cochlioides and Rhizoctonia solani are the predominant soilborne fungal pathogens
responsible for a root rot complex in beet crops. In Australia, the disease problems have been exacerbated in recent years because crops are now grown virtually year round and under environmental conditions favourable to
infection. This has lead to increased inoculum levels in soils sown to beetroot. Moreover. nowhere in the world does there seem to be a single strategy that is completely efficacious in controlling these pathogens, so an effective management strategy will almost certainly involve a combination of tactics. The most likely combination seems to
involve fungicide seed treatments, rotations of gramineous or biofumigant crops and the use of disease-resistant varieties of beet. The first of these, fungicidal seed dressings, are a cost-effective means of reducing pathogen inoculum and protecting young beets from infection. Hymexazol may be particularly useful in the Australian system, since it is active against both Pythium and Aphanomyces. To combat Rhizoctonia, it should be applied in combination with either pencycuron or toclophos methyl. Second rotations of gramineous crops, such as maize or oats. or biofumigant brassica crops, such as white mustard brussel sprouts or cabbage should also reduce the build-up of inoculum and offers a tactic to relieve the problem in the longer term. Third alternative beetroot cultivars with resistance to Rhizoctonia have now been developed in USA breeding programs and should be considered by the Australian industry. Resistant varieties are potentially very useful since they offer a long-term
approach to disease management that can be easily incorporated into existing production systems. Fourth, the alteration of sowing dates to avoid periods of high disease risk (e.g. confining sowing to the cooler, drier months) needs to be seriously considered by the Australian industry if it is committed to disease management. There is also evidence to suggest that seed priming may warrant consideration as a tool to use in combination with fungicide dressings to reduce disease in young plants. Biological seed treatments and soil fumigation appear to be tactics of
limited value to the Australian beet industry.


Yangzhou pioneer chemical CO.,LTD.
 

About dicamba: Performance of different work clothing types for reducing skin exposure to pesticides during open field treatment


The aim of this study was to estimate the performance of different work clothing types for reducing skin exposure to five pesticides (azinphos-methyl, terbutylazine, alachlor, dimethoate, and dicamba) in field distribution by tractor equipped with boom sprayer. Performance was assessed by measuring the penetration factors of different types of work clothing. The results show that the protection offered by personal protective equipment (PPE) was always >97%, whereas the performance of cotton garments ranged from 84.1% to 92.5%. The different cotton garments differed significantly in their permeability, and the upper part of the body was the anatomical region showing the greatest values of the penetration factors. These results confirm the necessity of using PPE properly to minimise dermal exposure to pesticides. 

Yangzhou pioneer chemical CO.,LTD.
 

U.S. EPA seeks more comments on pesticide sulfuryl fluoride


Source:EPA News Release 
On May 1, EPA published a Federal Register notice requesting comment on several issues raised during the 2011 comment period on the proposed tolerance revocation and stay request for the pesticide sulfuryl fluoride. Interested parties will have an opportunity to provide additional perspective and information on legal arguments raised during the previous comment period. EPA is also asking stakeholders to provide further information on the availability of alternatives and the potential impacts from the withdrawal of the sulfuryl fluoride and fluoride tolerances (legal residue limits on food).
Sulfuryl fluoride is an alternative to the ozone depleting pesticide methyl bromide, and is currently registered for the control of insect pests in stored grains, dried fruits, tree nuts, coffee and cocoa beans, and for use in food handling and processing facilities. This comment period will be open for 90 days, until July 30, 2012.

Yangzhou pioneer chemical CO.,LTD.
 

2012年5月10日星期四

About pencycuron: management of black scurf disease of potato


Management of black scurf (Rhizoctoni solani) of potato (Solarium tuberosuin L.) through determining level of susceptibility in various breeding lines/cultivars of potato and tuber treatment with various fungicides was investigated by using R. solaniAG-3 isolate CL-58 (a known aggressive). Greenhouse screening of fifteen potato breeding lines and cultivars for host plant resistance to isolate CL-58 by soil inoculation revealed potato cvs. Cardinal and Desiree, resistant and susceptible, respectively. Management of disease by using susceptible cv. Desiree through potato tuber treatment with fungicides viz., Dithane M-45, pencycuron and Benlate and then sowing them in potting mixture previously inoculated with inoculum of the fungus revealed Dithane M-45, a promising fungicide for management of this disease. It significantly checked eyes germination inhibition and decreased sprout killing, stem girdling, stem canker, black scurf incidence and severity over non-treated inoculated control. Based upon the results achieved, it is necessary to adopt this practice as seed treatment of chemicals is not a regular exercise in Pakistan. This in-turn will protect potato crop from seed-borne infection and will ultimately lead to better and healthy crop stand. 



Yangzhou pioneer chemical CO.,LTD.

About dicamba: effects of three herbicides on some function of no tillage ecosystems


By: Li Huixin Wu Shanmei
Three species of herbicides,chlortoluron,dicamba and fomesafen,were sprayed onnotillage fields of yellow-brown earth at normal and excess doses.The effects of differentherbicides at tested doses,and of chlortoluron with different tillage measure on function ofsoil ecosystems were studied.The results indicated that:according to three herbicides"s de-gree of the restraint to soil respiration,the order is dicamba>fomesafen>chlortoluron;thehigher the doses,the more the restraint.


Yangzhou pioneer chemical CO.,LTD.

Uzbekistan to eliminate old pesticide stocks


Source:Ground Report 
Uzbekistan joined other states in Central Asia, the Caucasus and Eastern Europe on April 12 to sign an agreement on eliminating old pesticide stocks with the United Nations Food and Agriculture Organisation, FAO, and the European Union.
Over a four-year period, the FAO and EU will provide seven million euro to these states to help them destroy obsolete pesticides, design new legislation to control chemicals, and make farmers more aware of the risks.
It is unclear what proportion of the money will go to Uzbekistan, which has large stocks of toxic pesticides. The government estimates that over 14,000 tons are held in storage, although a lobbying group, the International HCH & Pesticides Association, puts the figure at 40,000 tons.
At the moment the chemicals are held in 13 underground dumps across the country. The 40-year old sites flood every spring, creating a risk that the chemicals will seep into the subsoil.
An official with the government’s nature conservation service said on condition of anonymity that there were no resources to deal with the chemical dumps.
"Everyone understands what needs to be done and how to do it, but there is no budget allocation for pesticide destruction," he said.
Pesticides were used intensively in Soviet Uzbekistan from the 1940s to the 1960s, and the republic had over 450 airstrips for crop-spraying planes. By the early 1970s, DDT had been banned in the Soviet Union, but pesticides continued to be used in Central Asia, especially in cotton-growing areas.
In the mid 1990s, chemicals were removed from storage areas on crop-spraying airfields and other collection points, and were placed into underground concrete bunkers.
Uzbek scientists say farmland continues to be polluted with chloride-based pesticides far beyond the permissible limits. No work is being done to decontaminate these areas, and the role of the nature protection agency is restricted to monitoring.
Experts say international donors should now press the Uzbek government to become more serious about resolving this environmental problem.
The nature protection agency official says the authorities must first ratify the Stockholm convention on protecting people and environments from the impact of persistent pollutants. To date, the government has failed to sign various international agreements because of the costs that would entail.
As one environmentalist in Tashkent put it, "The authorities are relying solely on getting external assistance to eliminated landfills and dumps.”

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About pencycuron: Effects of selected chemical pesticides on Agamermis unka (Nematoda: Mermithidae), a parasite of the brown plant hopper, Nilaparvata lugens


By: Choo HoYul Kim HyeongHwan Kaya HK Choo HY Kim HH
Selected commercial and technical grade pesticides were tested against the egg, preparasite and adult stages of Agamermis unka, a nematode parasite of Nilaparvata lugens. The commercial insecticide, diazinon (LC50=0.37 ppm), was most toxic to the preparasites, followed by phenthoate (LC50=0.43 ppm), BPMC (LC50=0.44 ppm), IBP (LC50=0.46 ppm), cartap hydrochloride (LC50=0.82 ppm) and buprofezin + isoprocarb (LC50=1.11 ppm). The least toxic commercial pesticide tested was the fungicide, pencycuron (LC50=2.19 ppm). Out of 12 technical grade insecticides tested, phenthoate, monocrotophos, diazinon and carbofuran (LC50 = 0.37 - 0.46 ppm) were highly toxic to the preparasites, followed by buprofezin, BPMC and fenitrothion (LC50 = 0.74 - 0.86 ppm). Fenthion, etofenprox, chlorpyrifos, imidacloprid and MIPC (LC50=1.11-2.19 ppm) were the technical grade insecticides least toxic to the preparasites. Most preparasites survived for up to 24 h at the low insecticide concentrations (0.63 and 0.31 ppm). Preparasites that were exposed to BPMC for 24 h at concentrations as high as 5.0 ppm and survived the treatments infected brown planthopper nymphs. Four selected insecticides - chlorpyrifos, BPMC, imidacloprid and carbofuran - had significant adverse effects on A. unka egg hatching. Eggs that were in the insecticide solution for 168 h fared poorly with imidacloprid having the best survival (> 2% of the eggs hatching at 0.04 ppm). No eggs hatched from the other insecticide treatments. Three selected insecticides,BPMC, imidacloprid and chlorpyrifos, tested against adult A. unka showed that most adults survived the exposure to the insecticides between 0.31 and 2.5 ppm. At 5.0 ppm of BPMC or chlorpyrifos none of the adults survived, whereas with imidacloprid 70% of the adults survived. Egg deposition by the surviving adults was greatly reduced in those treated with the insecticides compared with those in the controls. Imidacloprid had some negative impact on the preparasites" ability
 



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The Study on the Preparation of Dicamba


By: Zhang Yong et al.
Dicamba was prepared from 2,5-dichlorophenol in a three-stage process. The optimum condition for carbonization was found to be temp.(140~145)℃,pressure 5.5~6.0MPa. In the presence of catalyst JSY-1, the yield of 3,6-dichlorosalicylic acid was increased evidently from 40% up to 66.4%. In process of methylation,the optimum C 7H 4O 3Cl 2∶(CH 3) 2SO 4 1.0∶2.1~2.2. The yield of dicamba was about 54%


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Pesticide residues still an issue in Taiwan


Source:The China Post 
The problem of pesticide residue on fresh produce in Taiwan has not been addressed since it was detected last year, an environmental group claimed this week, citing the results of its own recent tests.
Of 36 samples of fruit and vegetables taken from major wholesale chains, 20 were found to contain pesticide residues, which could cause health problems like infertility, said the Taipei office of Greenpeace.
In a random food test in February, toxic chemicals from pesticides were found on fresh produce such as star fruit, kumquat, grapefruit and Chinese cabbage at six supermarket chains, the group said.
Last December, the group found pesticide residue on 43 of the 58 items of fresh produce it tested. It said supermarkets were not doing enough to safeguard the health of consumers.
The recent tests results, said Greenpeace, are an indication that there has been very little improvement in the situation.
Among the pesticide residue found, two are listed by Taiwan"s Council of Agriculture as highly hazardous, Greenpeace said.
Although most of the residue levels did not exceed permitted national limits the presence of more than pesticide could amount to an exceeded limit, hazardous to health, Greenpeace said.
In response, Far Eastern AMart, one of the retail stores from which the tainted samples were obtained, said it had removed the items from its shelves.
"We will do what we can as a wholesaler and will tighten inspections," said the company"s PR manager Susan Yang.
Other supermarkets such as Carrefour and Pxmart said they are taking similar action, and will ask their suppliers to show pesticide test reports before the products could be put back on shelves.

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2012年5月8日星期二

About pencycuron: Ranking of agricultural pesticides in the Rhine-Meuse-Scheldt basin based on toxic pressure in marine ecosystems


By: Henning-de-Jong,I (Department of Environmental Science, Radboud University Nijmegen, Nijmegen, The Netherlands. i.henning@science.ru.nl) ; van-Zelm,R Huijbregts,MA de-Zwart,D van-der-Linden,TM Wintersen,A Posthuma,L van-de-Meent,D
Although risk assessments on a per-chemical basis are required during the registration procedure of pesticides, cumulative risks from the use of all pesticides on the variety of crops in a catchment area of a river are not assessed. The present study aimed to rank pesticides used in outdoor agricultural practice within the catchment of the rivers Rhine, Meuse, and Scheldt according to their potential toxic impact on the North Sea coastal ecosystem. Toxic pressure calculations (based on steady-state concentrations calculated with a multimedia fate model) and species-sensitivity distribution-based risk estimations were performed for pesticide emissions in the years 1998 (189 pesticides) and 2004 (133 pesticides). A ranking was established according to the relative contribution of single pesticides and crop types to the overall toxic pressure. Calculations were performed probabilistically to deal with parameter uncertainties. Only a few pesticides and crop types dominate overall toxic pressure because of emissions in both years, and the uncertainty appears to be caused largely by uncertainties in interspecies variances of aquatic toxicities. For 1998, these pesticides were fentin-acetate, with a median relative contribution (RCx) to the toxic pressure of multiple chemicals on an ecosystem of 0.43. For 2004, the pesticides that contributed most were pencycuron and paraquat-dichloride, with a median RCx, of 4.4 x 10(-2) and 3.9 x 10(-2), respectively. Pesticides applied to potato cropland and fruit trees contributed most to the overall toxic pressure.


dicamba (Banvel) herbicide injury on beans, tomatoes and muskmelon


dicamba is an herbicide commonly used for postemergence control of broadleaf weeds in corn, wheat, sorghum, pastures, and around field margins. This herbicide can be moved off target by windy conditions at the time of spraying or can volatilize after spraying at temperatures above 85 Fahrenheit temperature and drift off target. Many vegetable plants are sensitive to dicamba and even rates as low as 0.001 lb/acre (1/100th of the use rate) can cause visual crop injury. The degree of crop injury depends on the herbicide, rate, and crop growth stage at the time of drift. 

New task force tackles strawberry pesticide alternatives


Source:89.3kpcc
 
California’s strawberry industry has taken a substantial hit this year in terms of pesticides. Just as controversy over the use of methyl iodide was coming to a boil (opponents of the chemical claim it causes cancer), the pesticide’s Japanese manufacturer, Arysta LifeScience, pulled it from the American market (AgroNews 2012-03-21).
With methyl iodide already a replacement for the pesticide methyl bromide (phased out after being cited as an ozone-depleting agent), California’s strawberry farmers have been left with little alternatives to combat insects and diseases that attack their crops.
As reported by the Southwest Farm Press, the Department of Pesticide Regulation has put together a special panel of scientists, farmers, and industry advocates to create a five-year plan of action for finding alternative ways of handling the situation without the use of controversial chemicals. The task force has been given until the fall of this year to draft a plan.
"California’s strawberry industry urgently needs practical and cost-effective ways to grow strawberries without soil fumigants,” said director Brian R. Leahy in the Farm Press. "Our Non-fumigant Strawberry Production Work Group has a tall task. We want a full spectrum of production methods that control soil-borne diseases, weeds and other pests while protecting human health and the environment. This group can also help us develop a strategy on how to best use available fumigant tools going forward.”
It"s no small problem — the state"s $2.3 billion industry produces 88 percent of the strawberries in America.
"California is signaling support for innovation, including entrepreneurs who will bring new techniques to the market and the cutting-edge farmers who will use them in the fields," added Margaret Reeves, a senior scientist with the Pesticide Action Network to the Mercury News.

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About pencycuron: Chemical treatment of papaya seeds to control Rhizoctonia solani


BY: Univ Estadual Norte Fluminense, Ctr Ciencias and Tecnol Agropecuarias, BR-28013600 Campos Dos Goytacazes, RJ, Brazil
Chemical treatment of papaya seeds to control Rhizoctonia solani The efficiency of fungicides applied on papaya seeds to control Rhizoctonia solani was evaluated in two experiments. Papaya seeds were treated with fungicides (grams of active ingredient kg(-1) of seeds): triadimenol (0,5 and 1,0), pencycuron (1.0 and 2.0), thiabendazole (5,0 and 10,0), fludioxonil (0,25 and 0,50), difeconazole (1.0 and 2.0), captan (5.0), tolylfluanid (2.5) and captan + tolylfluanid (5.0 + 2.5) and controls (without fungicides). The vigor (seed germination percentage at the first count) and germination (%) of the seeds were evaluated in laboratory. In greenhouse, seeds were sowed in substrate infested with fungus mycelia, and in the controls, untreated seeds were sowed in infested and uninfested substrate. Seeds without chemical treatment were planted in infested and uninfested substrate as the controls. Toxicity symptoms on the seedlings were not observed for all treatments. Except for difeconazole, all products were efficient in controlling the death of seedlings in pre emergence and increased the emergence of plants in both experiments in greenhouse conditions, but satisfactory post-emergence damping-off control was achieved only by use of uninfested substrate.



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Studies on the toxicity of herbicide dicamba


By Yang Yongnian et al;
Dicamba is a new type selectivehormone herbicide. The acute toxicitytest showed that pure dicamba acute oralLD_(50) values were 1710 and 3830 mg/kgfor male and female rats respectively.The LD_(50) of its dimethylamine salt tomale was 650 mg/kg, and to female,1720 mg/kg. Botn are of low toxicitygrade. In the subacute toxicity test therats wer fed for 3 months with pure dicamba at the dosage of 640 ppm andno harmful effect could be observed inindices of organ weight and pathologicalexamination.


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Brazil recycled 9,481 tons pesticide containers by March


Source: inpEV 
The Brazilian pesticide container disposal organization, the inpEV, reports that the collection volume of empty containers rose by 17% compared with the same period last year to 9,481 tons in the first three months of 2012. Mato Grosso, Sao Paulo and Parana recorded higher recycling volumes.
According to the inpEV, various activities are designed to educate the farmers about the importance of washing pesticide containers after use and returning them to the location indicated on the invoice. The latest campaign the "Pride of the Nation", which supported by The Ministry of Agriculture, Livestock and Supply (MAPA), will be broadcast on national television until May.

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2012年5月6日星期日

Determination of Imidacloprid-Pencycuron 29% FS by HPLC


by:Xu Yan; Liu Pingping; Zhang Zheng; Sheng Qi; Wu Xuemin
A HPLC method was developed for the determination of imidacloprid-pencycuron 29% FS using C18 column,uv-detector and mobile phase of acetonitrile-water.The results showed that the variation coefficients and average recoveries of imidacloprid and pencycuron were 0.69%,99.7% and 0.78%,99.6% respectively
 




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Efficiency of using dicamba-dimethylamine in the orchard against broad-leaved perennial weeds


dicamba - dimethylamine at 1-5 kg/ha was use towards development weeds round drawers in a bearing apple orchard on a chernozemic loam land in 1967-70 in June. The 2 kg/ha rate showed complete control of field bindweed Convolvulus arvensis, crawl thistle Cirsium arvense & maize sowthistle Sonchus arvensis in December 1967; 94% of perennial weeds & all yearly grasses were controlled. Dicamba at up towards 2 kg/ha did not affect the yield, calibre or safekeeping properties of apples. Application of 2 kg/ha every twelvemonth in June is suggested. 


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Pesticide use in Indonesia is alarming


Source:Jakarta Globe
Indonesian farmers use an alarming amount of pesticides — including some with illegal toxic chemicals — on their crops, the People’s Coalition for Food Sovereignty (KRKP) said.
The NGO cited a 2011 survey of 306 farmers in Central Java that found that farmers used pesticides an average of 5.7 times per growing season.
"That is a very high use for farms,” KRKP official Said Abdullah said in Jakarta on Thursday.
Pesticides are big business in Indonesia. The local market reaches about Rp 6 trillion ($654 million) a year, Said said. That market includes 350 brands of fungicides, 600 brands of herbicides and 800 brands of insecticides registered with the Indonesian authorities, according to Ministry of Agriculture’s Pesticide Commission numbers.
And these figures don"t even include products that enter the country illegally, Said said.
"Between 10 and 12 percent of pesticides circulating in Indonesia are illegal,” he said.
Many of these chemicals contain harmful substances like organochlorine and organophosphate, Said said.
The one chemical, organophosphate, is considered hazardous, even in low doses, and its use is highly-regulated, or banned outright, in 23 countries. Organochlorine was present in the pesticide DDT, a chemical that caused massive ecological damage in the United States before its use was banned in the 1960s.
He called on farmers to adopt more environmentally-conscious and sustainable farming methods.

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2012年5月3日星期四

About pencycuron: a simple bioassay method of new fungicide against ricesheath blight-broad beau leaf method


By: Zhang Suhua; Li Shuzheng;Yang Shuqin 
The aim of this study was to establish one easy and rapid fungicidal screening method.A“broad beau leaf method” appropriated for fungicidal bioassay of rice sheath blight was proposed. The experiment showed that the method was simple to prepare the meterials and masterthe technique. Antibiotic activity and action way of Pencycuron and Validmycin assayed by thismethod were the same as those reported in the literatures. Similar results were obtained by usingeither broad beau leaf method or seedling method.

Effect of herbicide dicamba on rabbit vaginal mucus membrane


Effect of dicamba and its active ingredient, dicamba (3,6-dichloro-o-anisic acid) was investigated employing rabbit mucus membrane irritancy test. Inflammatory changes which did not exceed an average score of 2+ were observed in the animals 48 hr after a single intravaginal application of dicamba (0.1 ml/rabbit) and dicamba (100 mg/rabbit). Persistent histopathological changes were observed in 1 out of 6 banvel-treated rabbits 15 days post-application. The results suggest that banvel and dicamba are not primary irritants but should nevertheless be employed with caution


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U.S. EPA clarifies pesticide labeling requirements


Source:EPA News Release 
The U.S. Environmental Protection Agency has published a notice in the Federal Register announcing the availability of Pesticide Registration Notice 2012-1, titled Material Safety Data Sheets as Pesticide Labeling. This notice updates and clarifies PR Notice 92-4, titled Material Safety Data Sheets as Pesticide Labeling and is available at http://www.epa.gov/PR_Notices/.
The notice provides guidance to registrants on the relationship between EPA-approved labels for pesticides registered under the Federal Insecticide, Fungicide, and Rodenticide Act and the Material Safety Data Sheets required by the Occupational Safety and Health Administration (OSHA). Material Safety Data Sheets are also referred to as Safety Data Sheets.
OSHA requires Safety Data Sheets under its Hazard Communication Standard (HCS)(29 CFR 1910.1200) and recently published a final rule (77 Federal Register 17574-17896, March 26, 2012) to align its HCS requirements with the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). The GHS is designed to provide a common and coherent approach to defining and classifying hazards and communicating hazard information on labels and safety data sheets. The system was developed based on major existing systems for industrial chemicals, pesticides, consumer chemicals and chemicals in transport, but implementation of the GHS would require some changes in all existing systems in order to achieve harmonization.
PR notice 2012-1 explains how registrants can ensure their FIFRA labeling and Safety Data Sheets comply with EPA’s requirements.
EPA recommends registrants include in their Safety Data Sheets the hazard information required on FIFRA labeling and a brief explanation for differences between that information and the Safety Data Sheet hazard information. The PR Notice includes sample language that may be used.

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