Title: Performance of Six Substituted Dinitrobenzamine Herbicides Applied at Layby of Cotton (<i>Gossypium hirsutum</i>)
Abstract: Six substituted dinitrobenzamine herbicides, including butralin [4-(1,1-dimethylethyl)- N -(1-methylpropyl)-2,6-dinitrobenzenamine], dinitramine ( N 4 , N 4 -diethyl- α,α,α -trifluoro-3,5-dinitrotoluene-2,4-diamine), fluchloralin [ N -(2-chloroethyl)-2,6-dinitro- N -propyl-4-(trifluoromethyl)aniline], pendimethalin [ N -(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine], profluralin [ N -(cyclopropylmethyl)- α,α,α -trifluoro-2,6-dinitro- N -propyl- p -toluidine], and trifluralin ( α,α,α ,-trifluoro-2,6-dinitro- N,N -dipropyl- p -toluidine), were evaluated as directed broadcast sprays applied and soil incorporated at time of last cultivation (layby) of cotton ( Gossypium hirsutum L. ‘Acala SJ-2’). At the rates used, all herbicides provided more than 90% control of annual grasses. During 1976 and 1977, control of redroot pigweed ( Amaranthus retroflexus L.) and smooth pigweed ( Amaranthus hybridus L.) ranged from 90 to 100% and none of the herbicides differed significantly in their effect. However in 1975, butralin at 1.1 kg/ha did not improve pigweed control when compared to the untreated control. None of the herbicides consistently controlled black nightshade ( Solanum nigrum L.) and except pendimethalin, none caused detectable cotton injury. In 2 of 3 yr, pendimethalin caused enlarged growth of the cotton stem in the cotyledonary node area contacted by the herbicide spray. Stem breakage following wind occurred in about 5% of the cotton plants; however, the injury was not manifested by reduced yield. None of the herbicides influenced cotton yield. Residues from soil samples collected 4 months after herbicide application reduced growth of Japanese millet [ Echinochloa crus-galli (L.) Beauv. var. frumentacea (Link) Wright] 3 and grain sorghum [ Sorghum bicolor (L.) Moench] 24 to 49%.
Publication Year: 1980
Publication Date: 1980-03-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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