Uptake and metabolism of imidacloprid in cotton (Gossypium hirsutum Linn.) and its persistence in soil

摘要: The uptake and metabolism of imidacloprid in cotton was studied by following its application as seed treatment foliar application. Samples were analyzed High Performance Liquid Chromatograph. Maximum residues metabolites found to be 1.52 5.23 mg kg -1 leaves collected 15 days after sowing the treated with @ 3.5 14 g a.i. . initial deposits total 2.05 6.19 0 day 20 80 ha , respectively. For corresponding dosages, declined below determination limit 0.01 45 60 21 samples lint, oil cake did not reveal presence at harvest for both cases. In soil samples, 1.59 3.39 7 These could detected dosages. Following 0.48 1.42 on same day. dissipated 30 Based enzyme activity studies, it has been that recommended dosage show any deleterious effect dehydrogenase, phosphatase urease activities.