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Influence of Cultivation Timing on Chemical Control of Sicklepod (Cassia obtusifolia) in Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

David R. Shaw ,
Larry J. Newsom  and
Clyde A. Smith
David R. Shaw
Affiliation:
Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
Larry J. Newsom
Affiliation:
Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
Clyde A. Smith
Affiliation:
Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
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Abstract

Cultivation timings were used in conjunction with postemergence herbicides to determine their effect on sicklepod control in soybean. Treatments using cultivation alone resulted in less than 70% sicklepod control. A postemergence application of chlorimuron following metribuzin applied postemergence was usually more effective in controlling sicklepod with cultivation 7 days after application than with cultivation 3 days before or at application, or with no cultivation. Cultivation at any timing in conjunction with a postemergence application of imazaquin following imazaquin preemergence improved sicklepod control compared to imazaquin without cultivation. Sicklepod control with chlorimuron postemergence followed by cultivation 7 days after application was as good as or better than two sequential applications of chlorimuron with no cultivation. Imazaquin or metribuzin preemergence followed only by cultivation provided less than 80% control in two of three experiments.

Keywords

Chlorimuron, 2-[[[[(4-chloro-6 - methoxy - 2 - pyrimidinyl)ami no] - carbonyl]amino]sulfonyl]benzoic acidimazaquin, 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)-onesicklepod, Cassia obtusifolia L. # CASOBsoybean, Glycine max (L.) MerrChlorimuronimazaquinmetribuzinCASOB
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 39 , Issue 1 , March 1991 , pp. 67 - 72
Copyright
Copyright © 1991 by the Weed Science Society of America 

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References

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