[Psticide residues content in peas plants at chemical crop protection against noxious organism]
2006
Petrashkevich, N.V.,National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute of Plant Protection
The results of many years research on pesticide content determination applied in peas crops for protection against noxious objects are generalized. It is determined that by observation the recommended periods, rates, number of treatments the production is not contaminated by residues of the applied pesticides. In peas green mass the longest decomposition period is observed in the herbicide Sencor WDG, then the fungicide Rex 49,5 SC and the insecticide Mospilan 20% WP. Within two years the maintenance in grain during harvesting residual quantities of insecticide Buldok 2,5 % was studied. At recommended norm of the charge of 0,3 l/ha, double processing and terms of expectation 38 - 39 days of presence of operating substance бета-cyflutrin in production is not revealed. Decomposition in green weight of peas acetamiprid, operating substance of инсектицида Mospilan 20% WP, occured within 14 day after double processing. The maintenance of residual quantities has made from 0,025 up to 0,01 mg/kg. MDU for some vegetable cultures makes 0,05 mg/kg. By the period of harvesting in grain and straw of residual quantities of acetamiprid it is not revealed. During research under the maintenance of residual quantities of pesticides in plants of peas (green weight, straw, grain) it is established, that the studied pesticides at the recommended terms of application, norms of the charge and frequency rate of processings do not pollute production. The operating substance of herbicide Sencor WDG metribusin is kept in green weight of peas within 40 day, operating substances of fungicide Rex 49,7 % SC epoksikonazol and tiafanat-metil are found out till 21 and 28 day accordingly, and acetamiprid on the basis of which it is made insecticide Mospilan 20% WP - till 14 days
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