Evaluation of quizalofop-p-ethyl in cotton and effect on succeeding crop
169 / 156
Authors
-
V. S. Hooda
-
Meenakshi Sangwan
-
Samunder Singh
-
Sudesh Devi
Keywords:
Cotton, herbicide, quizalofop-p-ethyl, residual toxicity, weeds.Abstract
A field experiment was conducted during kharif season of 2013 and 2014 to evaluate the bio-efficacy
and phytotoxicity of quizalofop-p-ethyl against weeds in cotton. During both the years of study,
quizalofop-p-ethyl at 40, 50, 60 & 80 g/ha provided 27 to 60% control of weeds comparative to
pendimethalin used at 900 g/ha, however, lower dose of quizalofop-p-ethyl 30g/ha was very poor
in controlling the weeds. At 50, 60 and 80 g/ha, quizalofop-p-ethyl did not caused any phytotoxicity
in cotton crop and recorded a seed cotton yield which was at par among the treatments of quizalofopp-
ethyl at 50, 60 & 80 g/ha which was significantly higher than rest of the treatments except weed
free situation. No residual toxicity on succeeding crop of wheat was observed by quizalofop-pethyl
application during two years of study.