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INTEGRATED WEED MANAGEMENT IN WHEAT

KrishiKosh

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Title INTEGRATED WEED MANAGEMENT IN WHEAT
 
Creator Noori, Mohammad Talib
 
Contributor Patra, H.K.
 
Subject INTEGRATED, WEED MANAGEMENT, WHEAT ---
 
Description A field experiment was carried out at Agronomy Main Research Station of
Orissa University of Agriculture and Technology, Bhubaneswar during winter season
of 2013-14 to evolve an effective integrated weed management practice for wheat.
The trial was laid out in randomized block design with three replications and twelve
treatments. The treatments comprised of various herbicides like pre-emergence
application of pendimenthalin @ 1 kg ha-1 and post-emergence application of 2,4-D
@ 0.5 kg ha-1, metribuzin @ 0.3 kg ha-1 metsulfuron @ 0.02 kg ha-1, pedimethalin +
one hand weeding, pendimethalin + 2, 4-D, metribuzin + one hand weeding,
metribuzin + 2, 4-D, pendimethalin + metsulfuron and metribuzin + metsulfuron,
compared with hand weeding performed at 25 and 45 days after sowing (DAS) and
unweeded control.
Wheat was infested with 74% monocot and 26% dicot weeds just at the end
of critical period of crop weed competition. Digitaria ciliaris followed by Eleusine
indica amongst the narrow leaved weeds and Cleome viscosa as broad leaved weed
were the predominant weed floras. Application of pendimethalin + one HW
remarkably reduced the weed density and dry weight with improvement in weed
control efficiency followed by pendimethalin + metsulfuron which were at par. The
crop growth and grain yield (2780 kg ha-1) and straw yield (2730 kg ha-1) were
significantly increased with application of pendimethalin + one HW Weedy check
treatment reduced the grain yield to an extent of 38.32 % over pendimethalin + one
HW. The removal of nutrients by weeds was the maximum (23.18 kg N, 5.73 kg P
and 28.19 kg K ha-1) in unweeded control. Hand weeding registered the lowest N, P
and K (1.04 kg N, 0.2 kg P and 1.25 kg K ha-1) removal by weeds followed by
pendimethalin + one HW. The latter treatment enabled the crop to take up the
maximum N, P and K of 79.94, 9.06 and 48.01kg ha-1, respectively. Weed density and
dry weight were significantly and negatively correlated with grain yield. Significant
positive correlation was existed between crop growth and yield attributing factors and
grain yield. The treatment of pendimethalin + one hand weeding registered the
maximum net profit of Rs 7195 ha-1 indicating the most cost effective integrated weed
management practice for wheat.
 
Date 2016-12-21T15:23:56Z
2016-12-21T15:23:56Z
2014
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/91918
 
Language en
 
Relation Th;4267
 
Format application/pdf