ABSTRACT
A research trial was conducted at the Agricultural Research
Institute, Dera Ismail Khan to investigate the allelopathic effect of
congress grass applied alone or in combination with half and full
recommended doses of commercial herbicides (Puma Super and Buctril
Super) during the year 2010-11. The results revealed that weed control
strategies including hand weeding (30 and 60 days after sowing),
application of herbicides and use of congress grass water extract
significantly controlled weeds over the weedy check. Among the
treatments, herbicide Puma Super full recommended dose (625 mL ha-1)
significantly increased leaf area index, leaf area duration, crop growth
rate, number of tillers, number of grains spike-1, 1000-grain weight and
grain yield. While, weed density and dry weed biomass were minimum in
hand weeding. The findings revealed that, in order to obtain maximum
yield of wheat, the plots should be kept weed free by hand weeding
throughout the growing season or weeds should be suppressed by
application of herbicide like Puma super with recommended dose. It is
therefore concluded that herbicides can be used to control weeds in
wheat field where labor is expensive.
ABSTRACTA research trial was conducted at the Agricultural ResearchInstitute, Dera Ismail Khan to investigate the allelopathic effect ofcongress grass applied alone or in combination with half and fullrecommended doses of commercial herbicides (Puma Super and BuctrilSuper) during the year 2010-11. The results revealed that weed controlstrategies including hand weeding (30 and 60 days after sowing),application of herbicides and use of congress grass water extractsignificantly controlled weeds over the weedy check. Among thetreatments, herbicide Puma Super full recommended dose (625 mL ha-1)significantly increased leaf area index, leaf area duration, crop growthrate, number of tillers, number of grains spike-1, 1000-grain weight andgrain yield. While, weed density and dry weed biomass were minimum inhand weeding. The findings revealed that, in order to obtain maximumyield of wheat, the plots should be kept weed free by hand weedingthroughout the growing season or weeds should be suppressed byapplication of herbicide like Puma super with recommended dose. It istherefore concluded that herbicides can be used to control weeds inwheat field where labor is expensive.
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