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Journal Article

Dicamba Use and Injury on Soybeans (Glycine max) in South Dakota

D. E. Auch and W. E. Arnold
Weed Science
Vol. 26, No. 5 (Sep., 1978), pp. 471-475
Stable URL: http://www.jstor.org/stable/4042904
Page Count: 5

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Topics: Soybeans, Plants, Crops, Germination, Leaves, Plant growth, Corn, Crop economics, Herbicides, Waxes
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Dicamba Use and Injury on Soybeans (Glycine max) in South Dakota
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Abstract

Field experiments were conducted from 1974 to 1977 at Redfield and Centerville, South Dakota, to evaluate the tolerance of soybeans [Glycine max (L.) Merr.] at different growth stages and five varieties of soybeans to dicamba (3,6-dichloro-o-anisic acid) and to determine dicamba residue in the foliage. Yield reduction occurred from applications when soybeans were flowering. Furthermore, germination was reduced by dicamba application at pod-fill. Dicamba residue was detected in foliage 7 days but not 18 days after application. Extent of dicamba use and drift occurrence was determined by a telephone survey of 159 farmers. Thirty-one percent of the farmers surveyed used dicamba in 1976.

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