BIO-EFFICACY AND PERSISTENCE OF DICLOSULAM AND SULFENTRAZONE IN SANDY LOAM SOIL UNDER SOYBEAN CULTIVATION
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Date
2019
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DEPARTMENT OF SOIL SCIENCE AND AGRICULTURAL CHEMISTRY B.A. COLLEGE OF AGRICULTURE ANAND AGRICULTURAL UNIVERSITY ANAND
Abstract
The field experiment was conducted on “Bio-efficacy and persistence of
diclosulam and sulfentrazone in sandy loam soil under soybean cultivation”
during the kharif seasons for two years 2016-17 and 2017-18 at AICRP on Weed
Management farm, Anand Agricultural University, Anand (Gujarat). The experiment
was laid out in a Randomized Block Design with pre-emergence sprays of diclosulam
(84% WG) @ 26 and 52 g a.i. ha-1, and sulfentrazone (39.6% SC) @ 360 and 720 g
a.i. ha-1. An in vitro experiment was carried to study the persistence of diclosulam and
sulfentrazone in sandy loam soil. The experiment was carried out at AINP on
pesticide residues ICAR, Unit-9 AAU, Anand (Gujarat) in June, 2018. The
polypropylene tubes containing sandy loam soil (10 g) were fortified with the mixture
of diclosulam and sulfentrazone @1mg kg-1. The polypropylene tubes containing
spiked soil were kept under control conditions. Samples were processed on 0 (1 hour),
1, 3, 5, 10, 20 and 30 days after treatment and analyzed for the residues of diclosulam
and sulfentrazone by an in-house developed method utilizing QuEChERS approach.