Weed Technology (2003) 17, 117-126

William A. Bailey, John W. Wilcut and Robert M. Hayes (2003)
Weed management, fiber quality, and net returns in no-tillage transgenic and nontransgenic cotton (Gossypium hirsutum)
Weed Technology 17 (1), 117-126
Abstract: Studies on weed management systems with bromoxynil-resistant, glyphosate-resistant, and nontransgenic cotton cultivars in a no-tillage environment were evaluated in North Carolina and Tennessee in 1997 and 1998. All weed management systems in nontransgenic and bromoxynil-resistant cotton controlled sicklepod 72 to 78%, whereas sicklepod was controlled at least 94% in glyphosate-resistant cotton. Entireleaf and pitted morningglory, smooth pigweed, and common cocklebur were controlled at least 92% with all management systems. Fiber quality was also measured in Tennessee. Micronaire and fiber strength ranged from 4.35 to 4.55 units and 28.6 to 30.1 g/tex, respectively, in bromoxynil-resistant and glyphosate-resistant cultivars that received postemergence over-the-top (POT) herbicides. Harvest trash content ranged from 0.80 to 1.15% in systems where POT and late postemergence–directed (LAYBY) herbicides were used and was 1.65% where multiple glyphosate applications were used with no LAYBY herbicides. Cotton lint yield and net returns were generally highest in systems that included bromoxynil or pyrithiobac POT followed by cyanazine plus MSMA LAYBY or multiple glyphosate treatments where no LAYBY herbicides were used.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): John W. Wilcut, William A. Bailey

Research topic(s) for pests/diseases/weeds:
damage/losses/economics
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Senna obtusifolia (weed)	Cotton (Gossypium)	U.S.A. (SE)
	Xanthium strumarium (weed)	Cotton (Gossypium)	U.S.A. (SE)
	Amaranthus hybridus (weed)	Cotton (Gossypium)	U.S.A. (SE)
	Ipomoea lacunosa (weed)	Cotton (Gossypium)	U.S.A. (SE)
	Ipomoea hederacea (weed)	Cotton (Gossypium)	U.S.A. (SE)