By: M. Lootsma and K. Scholte
A two year field experiment was conducted twice to assess effects of chemical
soil disinfection at planting and methods of harvesting potatoes on stem
infection withRhizoctonia solani in the subsequent year. In the first year of
the experiments seven methods. including one with soil disinfection at planting,
were applied in August. In the following year,R. solani stem and stolon
infection (disease severity) on potato plants were assessed in June. Soil
treatment at planting with pencycuron resulted in lowest disease severity
in the following year. Compared with chemical haulm killing and haulm pulling.
immature-crop-harvesting also resulted in a lower disease severity, but only
when black scurf was scarce on tubers at harvest in the preceding year.Yangzhou pioneer chemical CO.,LTD
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