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STUDIES ON EVALUATION OF PRE AND POST EMERGENCE HERBICIDES FOR CONTROL OF WEEDS IN PIGEONPEA (Cajanus cajan (L.) Mill sp.)

KrishiKosh

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Title STUDIES ON EVALUATION OF PRE AND POST EMERGENCE HERBICIDES FOR CONTROL OF WEEDS IN PIGEONPEA (Cajanus cajan (L.) Mill sp.)
 
Creator VENKATA, REDDY
 
Contributor MURALI, K
 
Subject genotypes, animal husbandry, yields, environment, developmental stages, crops, land resources, cucumbers, fruits, crop improvement
 
Description A field experiment was conducted in red sandy clay loam texture
soil during kharif season of 2010 at Gandhi Krishi Vignana Kendra,
Bengaluru, Karnataka state to evaluate the efficacy of pre and post
emergence herbicides for control of weeds in pigeonpea.
Among the herbicidal treatments, pendimethalin @ 0.75 kg a.i. ha-1
+ one hand weeding at 50 days after sowing (DAS) recorded significantly
lower weed population (41/0.25m2) and dry weight (35.5 g/0.25m2) of
weeds at all the growth stages of the crop as compared to other
treatments, which was on par with alachlor @ 1.0 kg a.i. ha-1 + one hand
weeding at 50 DAS. It was also recorded higher plant height, branches,
leaf area and total dry matter per plant. Seed yield was higher in
pendimethalin @ 0.75 kg a.i. ha-1 + one hand weeding at 50 DAS (1281
kg ha-1). Among the herbicidal treatments, the lower seed yield was
observed in imazethapyr @ 75 g a.i. ha-1 at 15-20 DAS. Weed control
efficiency was higher in pendimethalin @ 0.75 kg a.i. ha-1 + one hand
weeding at 50 DAS (75 %) and was on par with alachlor @ 1.0 kg a.i. ha-1
+ one hand weeding at 50 DAS (73 %). The higher net returns and benefit
per each rupee invested was observed in pendimethalin @ 0.75 kg a.i.
ha-1 + one hand weeding at 50 DAS and in alachlor @ 1.0 kg a.i. ha-1 +
one hand weeding at 50 DAS.
 
Date 2016-12-15T10:21:29Z
2016-12-15T10:21:29Z
2011-03-26
 
Type Thesis
 
Identifier TH-10122
http://krishikosh.egranth.ac.in/handle/1/90245
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences GKVK, Bangalore