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Tank-mix Combinations for Weed Control in Stale Seedbed Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Stacey A. Bruff  and
David R. Shaw
Stacey A. Bruff
Affiliation:
Dep. Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
David R. Shaw
Affiliation:
Dep. Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
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Abstract

Field experiments were established in 1989 and 1990 on silty clay and sandy loam soils to evaluate selective herbicides in combination with non-selective weed control measures in conventional and stale seedbed soybean production. Metribuzin PRE followed by chlorimuron POST controlled sicklepod better with paraquat than with glyphosate. A POST application of imazaquin increased sicklepod and pitted morningglory control by imazaquin PRE alone in a stale seedbed or tillage program. Pitted morningglory control with imazaquin PRE was lower with tillage than with glyphosate or paraquat combinations in a stale seedbed program. All metribuzin plus chlorimuron PRE treatments, whether conventional tillage or stale seedbed, controlled pitted morningglory more than 75%. Hemp sesbania control was above 80% with all metribuzin followed by chlorimuron or metribuzin plus chlorimuron PRE combinations, and less than 70% with all treatments containing imazaquin. Selective herbicides increased yield in stale seedbed when glyphosate or paraquat was added. Imazaquin PRE, imazaquin PRE followed by imazaquin POST, and metribuzin PRE followed by chlorimuron POST tank mixed with glyphosate or paraquat in a stale seedbed program increased yield compared with the same treatments used with tillage.

Keywords

Chlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)-amino]-carbonyl]amino]sulfonyl]benzoic acidglyphosate, N-(phosphonomethyl)glycineimazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidmetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-oneparaquat, 1,1′-dimethyl-4,4′-bipyridinium ionhemp sesbania, Sesbania exaltata (Raf.) Rydb. ex A. W. Hill ♯ SEBEXpitted morningglory, Ipomoea lacunosa L. ♯ IPOLAsicklepod Cassia obtusifolia L. ♯ CASOBsoybean, Glycine max (L.) Merr. ‘Terra-Vig 515’TillageCassia obtusifoliaIpomoea lacunosaSesbania exaltatachlorimuronglyphosateimazaquinmetribuzinparaquatCASOBIPOLASEBEX
Type
Research
Information
Weed Technology , Volume 6 , Issue 1 , March 1992 , pp. 45 - 51
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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