<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">An experiment was conducted at the farm of Zonal Adaptive Research Station, Uttar Banga Krishi Viswavidhyalaya, Pundibari, Cooch Behar, West Bengal to evaluate the effect of pendimethalin on the yield, weed density and phytotoxicity in different varieties of rai (<italic>Brassica juncea</italic>) and yellow sarson (<italic>B. campestris</italic> var. yellow sarson) under higher soil moisture regime in <italic>Terai</italic> region of West Bengal. Pre-emergence application of pendimethalin at higher dose i.e. 1.0 kg/ha recorded higher plant mortality (30.92%) due to the presence of higher concentration of pendimethalin residue (0.292 μg/g) till the tenth day of crop age and consequently had the reduced yield (12.59 q/ha) than the dose of 0.7 kg/ha (13.33 q/ha) where plant mortality was only 12.62% due to comparatively lower level of pendimethalin residue (0.192 μg/g). Although the application of pendimethalin at the rate of 1.0 kg/ha was able to control weed more efficiently (18.96/m2) than the dose of 0.7 kg/ha (30.41/m2) and subsequent lower doses. The herbicide leached down to the root zone resulting in phytotoxicity towards crop. Yellow sarson group (<italic>Brassica campestris</italic>) showed more susceptibility than rai (<italic>Brassica juncea</italic>) group against pendimethalin application at higher doses.</abstract>

An experiment was conducted at the farm of Zonal Adaptive Research Station, Uttar Banga Krishi Viswavidhyalaya, Pundibari, Cooch Behar, West Bengal to evaluate the effect of pendimethalin on the yield, weed density and phytotoxicity in different varieties of rai (Brassica juncea) and yellow sarson (B. campestris var. yellow sarson) under higher soil moisture regime in Terai region of West Bengal. Pre-emergence application of pendimethalin at higher dose i.e. 1.0 kg/ha recorded higher plant mortality (30.92%) due to the presence of higher concentration of pendimethalin residue (0.292 μg/g) till the tenth day of crop age and consequently had the reduced yield (12.59 q/ha) than the dose of 0.7 kg/ha (13.33 q/ha) where plant mortality was only 12.62% due to comparatively lower level of pendimethalin residue (0.192 μg/g). Although the application of pendimethalin at the rate of 1.0 kg/ha was able to control weed more efficiently (18.96/m2) than the dose of 0.7 kg/ha (30.41/m2) and subsequent lower doses. The herbicide leached down to the root zone resulting in phytotoxicity towards crop. Yellow sarson group (Brassica campestris) showed more susceptibility than rai (Brassica juncea) group against pendimethalin application at higher doses.

Leaching behaviour of pendimethalin causes toxicity towards different cultivars of <italic>Brassica juncea</italic> and <italic>Brassica campestris</italic> in sandy loam soil

Department of Agronomy, Uttar Banga Krishi Viswabidhyalaya, Pundibari-736165, Coochbehar, West Bengal, India

Department of Biochemistry, UBKV, Coochbehar, India

Interdisciplinary Toxicology

Leaching behaviour of pendimethalin causes toxicity towards different cultivars of  and  in sandy loam soil

An experiment was conducted at the farm of Zonal Adaptive Research Station, Uttar Banga Krishi Viswavidhyalaya, Pundibari, Cooch Behar, West Bengal to evaluate...

Leaching behaviour of pendimethalin causes toxicity towards different cultivars of Brassica juncea and Brassica campestris in sandy loam soil

Published Online: Jan 06, 2010

Page range: 250 - 253

DOI: https://doi.org/10.2478/v10102-009-0025-z

Keywords
rape seed, mustard, pendimethalin, dinitroaniline, phytotoxicity, leaching

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