Vol. 12 No. 2
Dissipation kinetics of diclosulam 84% WDG in soils of four different agro-climatic regions under laboratory simulated condition
Author(s): P. GANGULY, S. R. BARIK, AND A. BHATTACHARYYA
Abstract:
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Laboratoryrnsimulation studies were performed to investigate dissipation kinetics ofrndiclosulam 84% WDG in soils of four different agro-climatic regions viz.newrnalluvial soil from Mohanpur, red & lateritic soil from Jhargram, coastalrnsaline soil from Canning and black soil from Pune at the rates of 1.0 and 2.0rnìg ml-1. Soil samples collected on 0 (2h after application),rn3 , 7, 15, 30, 60 and 90 days after applicationwere processed for residuernanalysis of diclosulam by HPLC. Diclosulam was dissipated linearly withrnprogress of time irrespective of dose and substrate.The calculated half-lifernvalues for black soil (pH 8.14)  wasrnfound to be in the range between 28.67-29.51 days whereas for saline soil (pHrn7.92) it was 30.41-34.21 days, for red and lateritic soil (pH 5.56) it wasrn35.42-40.14 days and for new alluvial soil (pH 6.85) it was 40.68-43.63 daysrnirrespective of treatment doses.

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