Effect of Moisture and Organic Manure on Persistence of Flubendiamide in Soil
2012
Das, Shaon Kumar | Mukherjee, Irani
Persistence of flubendiamide in soil as affected by moisture and organic manure was studied. The present study reports persistence of flubendiamide [N 2-{1,1-dimethyl-2-{methylsulfonyl) ethyl}-3-iodo-N 1-{2-methyl-4-{1,2,2,2-tetrafluoro-1 (trifluoromethyl) ethyl} phenyl}-1,2-benzene dicarboxamide] in a sandy loam soil. Dissipation of the pesticide followed mono-phasic first order kinetics. The persistence of flubendiamide was more in dry soil followed by field capacity and submerged condition with half life values of 150.5–158.4 days for submerged soil, 177.0–181.1 days for field capacity soil and 206.6–215.0 days for dry soil. It was found that there is slight effect of fortification level on dissipation of flubendiamide in soil. In all the cases i.e. dry, field capacity and submerged condition dissipation was slightly slower at 10 μg g−1 level. Amendment of organic manure (2.5%) to the soil enhanced the degradation of the insecticide, and the half-life values in field capacity and submerged soils were 155.1 and 130.8 days, respectively.
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