The Influence of Different Row Spacing and Weed Control Intervals on Weed Infestation and Yield-Related Traits of American ( Gossypium hirsutum L.) and Desi ( Gossypium arboreum ) Cotton

Mubshar Hussain (), Muhammad Haider Abbas, Abdul Majeed, Waqas Ahmed Minhas, Shahid Farooq and Khawar Jabran
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Mubshar Hussain: Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan
Muhammad Haider Abbas: Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan
Abdul Majeed: Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan
Waqas Ahmed Minhas: Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan
Shahid Farooq: Department of Plant Protection, Faculty of Agriculture, Harran University, Şanlıurfa 63050, Turkey
Khawar Jabran: Department of Plant Production and Technologies, Faculty of Agricultural Sciences and Technologies, Nigde Omer Halisdemir University, Nigde 51240, Turkey

Sustainability, 2022, vol. 14, issue 16, 1-13

Abstract: Narrow row spacing has attracted significant attention due to its beneficial impacts on weed management in cotton. This study compared the effects of normal and ultra-narrow row spacing on critical periods of weed control in American ( Gossypium hirsutum L.) and ‘Desi’ ( Gossypium arboreum ) cotton. Two different row spacings (i.e., recommended (75 cm) and ultra-narrow (30 cm)) and three weed control intervals (i.e., weed control at 30, 60 and 90 days after sowing (DAS)) were included in the study. Weedy-check and weed-free treatments were included in the experiment as controls for comparison. ‘Desi’ cotton grown under ultra-narrow spacing recorded the lowest weed density and individual density of Trianthema portulacastarum L., Cyperus rotundus L., Cynodon dactylon L., Echinochloa colona (L.) Link and Digera muricata (L.) Mart. Moreover, ‘Desi’ cotton sown under ultra-narrow spacing with weed-free and weed control at 30 DAS resulted in the highest leaf area index (LAI), leaf area duration (LAD), net assimilation late (NAR), root elongation rate (RER) and root growth rate (RGR) at all sampling dates. Likewise, ‘desi’ cotton sown under recommended row spacing and weed-free conditions produced the highest number of sympodial and monopodial branches, number of flowers and bolls per plant, whereas the highest seed cotton yield of ‘Desi’ cotton was noted under ultra-narrow spacing and weed-free conditions. It is concluded that sowing both cotton types in ultra-narrow row spacing and controlling weeds at 30 DAS will result in lower weed infestation and higher seed cotton yield.

Keywords: cotton; weed management; weed density; growth; yield (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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