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Metribuzin and Chlorimuron Mixtures for Preemergence Broadleaf Weed Control in Soybeans, Glycine max

Published online by Cambridge University Press:  12 June 2017

Jerome M. Green ,
Timothy T. Obrigawitch ,
James D. Long  and
James M. Hutchison
Jerome M. Green
Affiliation:
Agric. Prod. Dep., Stine-Haskell Res. Cent., E. I. du Pont de Nemours & Co., Newark, DE 19714
Timothy T. Obrigawitch
Affiliation:
Agric. Prod. Dep., Stine-Haskell Res. Cent., E. I. du Pont de Nemours & Co., Newark, DE 19714
James D. Long
Affiliation:
Agric. Prod. Dep., Stine-Haskell Res. Cent., E. I. du Pont de Nemours & Co., Newark, DE 19714
James M. Hutchison
Affiliation:
Agric. Prod. Dep., Stine-Haskell Res. Cent., E. I. du Pont de Nemours & Co., Newark, DE 19714
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Abstract

Metribuzin and the ethyl ester of chlorimuron were evaluated alone and in combination for preemergence broadleaf weed control in soybeans. Neither herbicide alone controlled all broadleaf weeds tested, but combinations showed both complementary and additive action. Two field studies quantified these interactions on broadleaf weeds and showed that low rates of either herbicide alone controlled Pennsylvania smartweed and redroot pigweed. Metribuzin was more effective than chlorimuron in controlling prickly sida and hemp sesbania, while chlorimuron was more effective on common cocklebur, sicklepod, and ivyleaf and pitted morningglories. Additive action was most important on velvetleaf, sicklepod, annual morningglories, and hemp sesbania. Because the components were both additive and complementary, a range of mixture rates and ratios were more effective for weed control than either herbicide alone.

Keywords

Chlorimuron, 1-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)animo] carbonyl] amino] sulfonyl] benzoic acidmetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-onecommon cocklebur, Xanthium strumarium L. # XANSThemp sesbania, Sesbania exaltata (Raf.) Rydb. ex. A.W. Hill # SEBEXivyleaf morningglory, Ipomoea hederacea (L.) Jacq. # IPOHEPennsylvania smartweed, Polygonum pensylvanicum L. # POLPYpitted morningglory, Ipomoea lacunosa L. # IPOLAprickly sida, Sida spinosa L. # SIDSPredroot pigweed, Amaranthus retroflexus L. # AMAREsicklepod, Cassia obtusifolia L. # CASOBsoybeans, Glycine max (L.) Merr., velvetleaf Abutilon theophrasti Medik. # ABUTHDPX-F6025AMARECASOBIPOLAIPOHEPOLPYSEBEXXANST
Type
Research
Information
Weed Technology , Volume 2 , Issue 3 , July 1988 , pp. 355 - 363
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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