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Influence of Cultivation Timing On Weed Control in Soybean (Glycine Max) with Ac 263,222

Published online by Cambridge University Press:  12 June 2017

Larry J. Newsom  and
David R. Shaw
Larry J. Newsom
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

Cultivation timings and postemergence applications of AC 263,222 were evaluated for sicklepod and pitted morningglory control in soybean. Cultivation alone controlled each less than 35% season-long. A cultivation made 7 d after POST applications of AC 263,222 more consistently improved sicklepod and pitted morningglory control than a cultivation made 3 d before, immediately after, or 3 d after the POST application. Imazaquin PRE followed by 18 g ai/ha AC 263,222 controlled sicklepod 88% or more and pitted morningglory 83% or more two of three years. A cultivation made immediately after AC 263,222 POST resulted in reduced soybean yields in several instances compared to the same treatment without cultivation. A cultivation made 7 d after application of AC 263,222 increased soybean yields the most in several instances compared to all other timings.

Keywords

AC 263,222, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-methyl-3-pyridinecarboxylic acidimazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidpitted morningglory, Ipomoea lacunosa L. ♯ IPOLAsicklepod, Cassia obtusifolia L. ♯ CASOBsoybean, Glycine max (L.) Merr. Terra-Vig 515.’Soybean injuryimazaquinCassia obtusifoliaIpomoea lacunosaCASOBIPOLA
Type
Research
Information
Weed Technology , Volume 8 , Issue 4 , December 1994 , pp. 760 - 765
Copyright
Copyright © 1994 Weed Science Society of America 

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References

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