Top companies registered more pesticides in China

Source:Agropages.com

According to the market research report “Multinationals in China – 2011”, published by Agchem Business Consulting, more pesticides of the top companies, including Syngenta, BASF, Bayer CropScience, Dupont, Dow CropSciences were granted registration in year of 2011 in China. The strategy products of these companies all had a good performance in this emerging market, fungicides were seen as a fast growing category.

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Herbicides dicamba and 2,4-d

Dicamba containing herbicides are not as widely used as 2,4-D containing herbicides. The primary uses of dicamba are in portemergence corn, turf, and total vegetation control products. The potential of dicamba to evaporate (volatilize) from leaf surfaces can be a problem for some formulations, - generally salts or dimethylene formulations.

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using pesticides safely such as pencycuron

To manage and reduce health and safety risks when spraying pesticide such as pencycuron:
1. Spray when weather conditions are suitable and stable - for example winds between 3 - 15 km/hour (not too still, not too windy) and consider humidity, as low humidity can contribute to spray drift for water based pesticide formulations such as pencycuron.
2. Use a suction method of transferring pesticides to a spray tank. A vortex mixing system can also be used where the pesticide concentrate is added to a water supply during spraying without having to be pre-mixed.
3. Prevent nozzles from becoming blocked by using the correct filters and pesticide formulation such as pencycuron and ensure that water and equipment are clean.
4. Clear blocked nozzles using a soft bristle brush, or compressed air. Never suck or blow blocked nozzles to clear them. 

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How to Safely Spray Pesticide such as pencycuron

By Thomas Fyrd Pesticides certainly have positive and negative aspects such as pencycuron. On one hand, they keep plants alive by killing insects that would injure the plant or the plants fruit. On the other hand, if used improperly, they can kill more than just the insects by polluting the environment. By carefully applying the chemicals, you can avoid infecting the plant itself. You will most likely be using a handheld pump or a hose-end sprayer to apply the pesticide. The pump sprayers help you mix the chemicals more accurately, but it won"t spray very far. The only way to reach the tops of trees is with the hose end sprayers, which mixes less accurately since water pressure is not consistent. You need to make sure you dilute the chemicals a lot before they are applied, since they are very strong in their concentrated forms. Follow the directions - the label - carefully and xactly when you are mixing chemicals. The chemicals are dangerous, so be careful with them and wear protective gear. Rubber gloves should always be worn. Make sure you measure the portions exactly as the label says. It"s not like cooking where estimation can work. A miscalculation can either kill the tree and surrounding plants or not control any bugs at all. You should put the pesticide such as pencycuron into the container first, and add the water on top of that. After it is properly mixed, you can apply it. Ideally, you will spray evenly over the whole area. Don"t spray so much that the chemicals are dripping off of leaves in any area. Using a ladder will help to control how much you are spraying towards the top of trees. Just like you are painting, the pesticide such as pencycuron should be applied in even, full sweeps. Only spray each part once, never twice. If you are spraying a large tree, you should spray from the inside of the tree to the outside, while standing on a ladder under the base of the trunk. Once the outer canopy is sprayed, you can move out from under and spray the rest. After you are done spraying, you should clean everything thoroughly, including all of the equipment you used and your clothes. Don"t mix the clothes you used to spray with the regular loads of laundry. It is very important that you make sure not to drip the chemicals onto the ground. If you do this, the pesticides will be absorbed into the roots of the tree and go into the fruit itself. If you keep this from happening and wash the fruit before you eat it, you will surely not be ingesting pesticides.

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Dissipation and phytotoxicity of dicamba residues in water

By: C. J. Scifres, T. J. Allen,　C. L. Leinweber and　K. H. Pearson

The herbicide, 3-6-dichloro-o-anisic acid (dicamba), dissipated most rapidly from water under non-sterile, lighted conditions. Pond sediment evidently contained microbial populations capable of decomposing the herbicide. Temperature was crucial in dicamba dissipation, especially in the presence of sediment. Influence of sediment on dissipation rate of dicamba was apparently augmented by light in some cases. Under summer conditions, dicamba at 4.4 kg/ha per surface area of ponds dissipated at about 1.3 ppm/day. Dicamba dissipated as a logarithmic function of concentration with time. Reaction of seedling crops to irrigation water containing dicamba varied among species and cultivars. Relative tolerance from these studies was ranked from most to least tolerant as follows: sorghum [Sorghum bicolor (L.) Moench. ‘RS-626’ and ‘Pioneer 820’] > cotton (Gossypium hirsutum L. ‘Blightmaster’ > ‘Paymaster’ > ‘Dunn’) > cucumbers (Cucumis sativa L. ‘Straight eight’).


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EPA cancels registrations of two pesticides

Source:ABC Bird

The U.S. Environmental Protection Agency has announced the cancellation of two toxic pesticides that were documented by American Bird Conservancy to have recurrently poisoned hundreds of birds.
"ABC has repeatedly raised concerns with the EPA about the toxic impacts of both dimethoate and methidathion on some of America’s migratory bird species that feed in fields where the pesticides are used. There are a number of less toxic, widely-available, and equally effective insecticide alternatives that can be used by our nation’s farmers, and so we applaud the EPA for taking these final steps to cancel the registered uses of these harmful chemicals,” said Darin Schroeder, vice president of Conservation Advocacy for American Bird Conservancy, the nation’s leading bird conservation organization.

Dimethoate is an insecticide used on many different food products including blueberries, a fruit often eaten by birds such as Cedar Waxwings and Baltimore Orioles. ABC’s records show multiple poisoning incidents by this chemical resulting in over 600 bird fatalities. ABC has repeatedly requested EPA to revoke import tolerances for dimethoate and twelve other chemicals – meaning that food containing residues of the pesticide would no longer be allowed to be imported into the United States. ABC believes that as long as such tolerances exist, the use of these pesticides will continue on crops grown for export in Central America, where many migratory birds spend their winter.

Methidathion is used to control a variety of insects and mites in many crops such as fruits, vegetables, tobacco, alfalfa, and sunflowers. ABC’s Avian Incident Monitoring System database shows that it has been associated with numerous hawk poisoning incidents. Data on deadly encounters involving birds and chemicals is documented by the AIMS database, a centralized source for field data on lethal and sub-lethal impacts of pesticides on birds. Unfortunately, while the system had provided documentation on such incidents dating back to the 1980s, in 1998 the EPA relaxed reporting rules on pesticide poisoning of wildlife to the point where they are now effectively meaningless.

"Of the five billion pounds of pesticides that are applied worldwide each year, 20% is used in the United States. The assumption that because these pesticides are licensed by the federal government their use is automatically safe is unfounded. In fact, pesticides like dimethoate and methidathion continue to cause significant bird mortality each year,” said Mr. Schroeder.

In 2002, American Bird Conservancy formed the National Pesticide Reform Coalition (NPRC) to improve collaboration between conservation organizations on pesticide issues and increase their influence on regulatory decisions. ABC leads this coalition, which numbers more than 20 partner groups. Over the last decade, ABC and NPRC efforts have led to the cancellation of over a dozen pesticides that are particularly harmful to birds, including fenthion, chlorfenapyr, ethyl parathion, and carbofuran. These combined restrictions have caused bird deaths from pesticide poisonings to drop dramatically from an estimated 67 million birds per year in 1992 to perhaps fewer than 15 million per year today.

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About pencycuron : Seed treatment options set to grow

INTRODUCED as a likely successor to potato fungicide seed treatment Monceren (pencycuron), new active penflufen from Bayer CropScience, could be available to growers in 2012.
According to Bayer’s product manager for potato herbicides and fungicides, Neil Thompson, penflufen is from the carboxamides range of chemicals and is highly active against rhizoctonia.
Also, unlike Monceren(pencycuron), penflufen has activity against silver scurf, said Mr Thompson.
The new active has been submitted to the UK approvals system and Mr Thompson says Bayer is confident of approval for use in 2012.
Syngenta’s fludioxonil potato seed treatment could also be available in the near future.
Fludioxonil is a broad-spectrum seed treatment primarily for control of rhizoctonia, but it also has activity against dry rot, skin spot and some activity against seed-borne black dot.
Fludioxonil will also have a useful effect on common scab, said Syngenta’s field technical manager Jon Ogborn.

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