Journal of Food, Agriculture and Environment
Integrated weed management in cotton cultivated in the alternate-furrow planting system
Author(s):
Hakoomat Ali,
Shoukat A. Abid, Shakeel Ahmad, Naeem Sarwar, Memoona Arooj, Athar Mahmood *, Ahmad N. ShahzadRecieved Date: 2013-07-08, Accepted Date: 2013-10-18
Abstract:Cotton is more sensitive to weed competition at early weeks as well as at later growth stages. During flowering, weed infestation promotes boll shedding and substantially reduces the lint yields. Two year research was conducted to explore the effects of integrated chemical and mechanical practices on weed control and yield of cotton grown in the alternate furrow planting system. The chemical treatments i.e. No chemical, Pendimethalin 330 E @ 2.5 L ha-1 (Pre-emergence), Glyphosate 490 G/L @ 4.7 L ha-1 (Post-emergence) were kept in main plots while the cultural treatments i.e. No inter-culturing, Inter-culturing, Inter-culturing + Every row earthing up, Inter-culturing + Alternate row earthing up were kept in subplots. Maximum control of both narrow and broad leaf weeds (97%) at 30 DAS was achieved by integrating Pendimethalin with Inter-culturing + Every row earthing up. At 60 DAS, Glyphosate in combination with different mechanical practices showed the maximum control of both broad and narrow leaf weeds (86-89%). While Pendimethalin in combination with mechanical treatments reduced the total weed dry biomass at 60 DAS by circa 75%. An integrated use of Pendimethalin and Inter-culturing plus Alternate row earthing up significantly enhanced the numbers of bolls plant-1 and 100 boll weight of cotton. Pendimethalin in combination with Inter-culturing + Alternate row earthing up showed markedly higher biological yield, seed cotton yield and harvest index than other treatment combinations. This study suggested that in cotton cultivated in alternate furrow planting system, use of pre-emergence Pendimethalin in combination with Inter-culturing + Alternate row earthing up provides an efficient weed control over a longer period of time. This treatment combination is also shown to significantly enhance the seed cotton yields.a
Keywords:Furrow planting,
cotton, weed control, yield, glyphosate, pendimethalin, hand weeding and inter-culturingJournal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 1664-1669
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