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Evaluation of some herbicides in green gram (Vigna radiata L.) and their residual effect on succeeding mustard crop

KrishiKosh

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Title Evaluation of some herbicides in green gram (Vigna radiata L.) and their residual effect on succeeding mustard crop
 
Creator Punia, Rajni
 
Contributor Thakral, S.K.
 
Subject Weeds, Control methods, Vegetables, Crops, Herbicides, Yields, Diseases, Planting, Sowing, Cultivation
 
Description Evaluation of some herbicides in green gram and their residual effect on succeeding
mustard crop was studied at Research farm of Department of Agronomy, CCSHAU, Hisar
during kharif 2013 and Rabi 2013-14. Weed flora of the experimental field was dominated by
Echinocloa colona (78%), Cyperus rotundus (18%) and other weeds (4%) at 30 DAS. PRE
application of imazethapyr + pendimethalin (RM) at 1000 g ha-1 provided good control (80%)
of Echinocloa colona up to 30 DAS. At 60 DAS, imazethapyr + imazamox (RM) at 80 g ha-1
applied at 3-4 leaf stage provided maximum control of weeds which was at par with two
hoeings employed at 20 & 40 DAS. Post-emergence use of imazethapyr + imazamox (RM) at
60-80 g ha-1 exhibited 70-80 % control of weeds with slight crop suppression which mitigated
within 10-15 days after spray resulting maximum crop growth and seed yield. Early postemergence
application of imazethapyr at 50, 60 and 70 g ha-1 although caused mild injury to
green gram in terms of yellowing of leaves and stunted crop growth up to 30, but it
diminished within two weeks. Maximum seed yield (1078 kg ha-1) of green gram was
obtained with two hoeings at 20 & 40 DAS followed by imazethapyr + imazamox (RM) at 80
g ha-1 and imazethapyr at 70 g ha-1applied at 3-4 leaf stage. All herbicides, irrespective of
their dose and time of application, did not cause any injury to mustard planted as succeeding
crop after harvest of green gram due to enhanced microbial degradation of herbicides due to
high rainfall (477 mm) during crop growing season.
 
Date 2016-09-21T12:12:39Z
2016-09-21T12:12:39Z
2014
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/77983
 
Language en
 
Format application/pdf
 
Publisher CCSHAU