Effect of planting methods and weed management in green gram {Vigna radiata (L.) R. Wilczek}
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Date
2017
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Abstract
A field experiment was conducted during 2014 and 2015 at experimental area of CCS
Haryana Agricultural University, Hisar to study the “Effect of planting methods and weed
management in green gram {Vigna radiata (L.) R. Wilczek}” under three planting methods,
viz. raised bed, conventional, zero till along with nine weed management practices, viz.
weedy check, hand weeding (15 & 30 DAS), weed free, pendimethalin pre (1000 g ha-1),
imazethapyr pre (70 g ha-1), imazethapyr pre (100 g ha-1), imazethapyr 3-4 leaf stage (70 g
ha-1), imazethapyr 3-4 leaf stage (100 g ha-1), imazethapyr + imazamox (RM) 3-4 leaf stage
(70 g ha-1) in split plot design with three replications.
Among different planting methods, raised bed planting method resulted in better
growth of crop, improved crop growth indices, yield attributes and yield of crop and also
proved effective in reducing weed infestation. Among different weed management practices,
weed free treatment proved best in controlling weeds and improving the yield of green gram
while in case of herbicide treatments, all weed management practices proved very effective in
controlling weeds as compared to weedy check. Post emergence application of imazethapyr
@ 100 g ha-1 and imazethapyr @ 70 g ha-1 proved very effective in controlling weeds as
compared to other treatments. Higher dose of imazethapyr i.e. 100 g ha-1 proved more
effective as compared to its lower dose i.e. 70 g ha-1. As compared to alone application of
pendimethalin (1000 g ha-1) at pre emergence stage, the application of imazethapyr @ 70 g
ha-1, imazethapyr @ 100 g ha-1(pre emergence application , post emergence application), post
emergence applicatrion of imazethapyr + imazamox (70 g ha-1) all proved their more
effectiveness in controlling different weeds in green gram and increasing yield of green gram.
Although, phytotoxicity symptoms of application of imazethapyr (70 and 100 g ha-1) were
observed in succeeding mustard crop grown in same field.
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