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Propanil and Mixtures with Propanil for Weed Control in Rice

Published online by Cambridge University Press:  12 June 2017

Roy J. Smith Jr.*
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, Stuttgart, Arkansas
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Abstract

The herbicide 3’,4′-dichloropropionanilide (propanil) effectively controlled barnyardgrass [Echinochloa crusgalli (L.) Beauv.], brachiaria [Brachiaria platyphylla (Griseb.) Nash], crab-grass [Digitaria spp.], sesbania [Sesbania exaltata (Raf.) Cory], curly indigo [Aeschynomene virginica (L.) B.S.P.], spikerush [Eleocharis spp.], and umbrellasedge [Cyperus spp.] in the 1- to 4-leaf stages without significant injury to commercial varieties of rice in the 1- to 2-leaf stages. It was ineffective for control of ducksalad [Heteranthera spp.], redstem [Ammannia coccinea Rottb.], morningglory [Ipomoea spp.], sprangletop [Leptochloa panicoides (Presl.) Hitchc.], and red rice [Oryza sativa L.]. Mixtures of propanil and a blended surfactant, containing petroleum sulfonate, free and combined fatty acids, and petroleum oil, and mixtures of propanil and isopropyl N-(3-chlorophenyl)carbamate (CIPC) and methyl 2,4-dichlorocarbanilate (swep), controlled barnyardgrass better than propanil alone. Propanil sometimes injured the rice, but it recovered in 5 to 10 days after treatment and yield and quality were unaffected.

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Type
Research Article
Copyright
Copyright © 1965 Weed Science Society of America 

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