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Persistence and metabolism of imidacloprid in different soils of West Bengal
Author(s) -
Sarkar M A,
Roy Sankhajit,
Kole R K,
Chowdhury Ashim
Publication year - 2001
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.328
Subject(s) - imidacloprid , persistence (discontinuity) , soil water , vermiculite , west bengal , chemistry , biology , toxicology , zoology , agronomy , pesticide , horticulture , ecology , geology , geotechnical engineering , socioeconomics , sociology
A laboratory experiment was performed to study the persistence of imidacloprid from two formulations (Confidor 200 g litre −1 SL and Gaucho 700 g kg −1 WS), and its metabolism in three different soils (Gangetic alluvial soil of Kalyani, lateritic soil of Jhargram and coastal alkaline soil of Canning) of West Bengal following application at 0.5 kg and 1.0 kg AI ha −1 . Dissipation of imidacloprid in soil followed first‐order kinetics and DT 50 values ranged from 28.7 to 47.8 days. The shortest half‐lives (28.7 and 35.8 days) were observed in the lateritic soil of Jhargram for both liquid and powder formulations. The formation of two metabolites of imidacloprid, imidacloprid‐urea and imidacloprid‐olefin, was first detected on day 30 of degradation at 28 (±1) °C in all three soils. © 2001 Society of Chemical Industry