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Non-selective and Selective Herbicide Combinations in Stale Seedbed (Glycine max)

Published online by Cambridge University Press:  12 June 2017

David E. Hydrick  and
David R. Shaw
David E. Hydrick
Affiliation:
Dep. Plant & Soil Sci., Mississippi State Univ., Mississippi State, MS 39762
David R. Shaw
Affiliation:
Dep. Plant & Soil Sci., Mississippi State Univ., Mississippi State, MS 39762
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Abstract

Field experiments were established in 1991 and 1992 on silty clay and sandy loam soils to evaluate combinations of non-selective and selective herbicides for stale seedbed soybean weed control. Metribuzin PRE controlled sicklepod and pitted morningglory more consistently than other treatments. At 9 wk after planting, antagonism occurred in most cases on sicklepod control when metribuzin was tank-mixed with a non-selective herbicide. Other selective herbicides required addition of a non-selective herbicide at planting to effectively control sicklepod and pitted morningglory. Sicklepod and pitted morningglory control was better with POST selective herbicides when following glufosinate or paraquat than when following glyphosate or SC-0224. In most instances a follow-up POST treatment was needed to maintain weed control from non-selective herbicides applied PRE. Metribuzin and metribuzin plus chlorimuron increased soybean yields when tank-mixed with paraquat compared with yields obtained with paraquat alone.

Keywords

Chlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]-carbonyl]amino]sulfonyl]benzoic acid]glufosinate, 2-amino-4-(hydroxymethylphosphinyl)butanoic acidglyphosate, N-(phosphonomethyl)glycinemetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-oneparaquat, 1,1′-dimethyl-4,4′-bipyridinium ionSC-0224, trimethylsulfonium carboxymethylaminomethylphosphonatepitted morningglory, Ipomoea lacunosa L. # IPOLAsicklepod, Senna obtusifolia (L.) Irwin and Barneby # CASOBsoybean, Glycine max (L.) Merr. ‘Terra-Vig 515.’Burndown herbicidestillageAC 263,222chlorimuronimazaquinmetribuzinglyphosateglufosinateSC-0224paraquatCASOBIPOLA
Type
Research
Information
Weed Technology , Volume 9 , Issue 1 , March 1995 , pp. 158 - 165
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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