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Influence of Application Method on the Activity of Butylate and EPTC in Reduced-Tillage Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Douglas D. Buhler
Douglas D. Buhler*
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
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Abstract

Weed control in reduced-tillage corn (Zea mays L. ‘Pioneer 3732′) with butylate [S-ethyl bis(2-methylpropyl) carbamothioate] and EPTC (S-ethyl dipropyl carbarnothioate) was not reduced when these herbicides were applied jointly with dry or liquid fertilizer. In most cases, application with fertilizer resulted in weed control similar to that observed when the herbicide was applied in water at 285 L/ha. Butylate applied as a granular formulation also gave weed control similar to the spray at 285 L/ha. Application in 95 L/ha of water consistently resulted in reduced weed control. Corn injury was not greatly influenced by application method, and differences in corn yield appeared to be due to differences in weed control. Growth chamber bioassays indicated that both butylate and EPTC dissipated more rapidly when applied in 95 L/ha of water than the other application methods, which may explain differences in weed control observed in the field.

Keywords

Carrier volumedry fertilizergranular herbicidesherbicide dissipationliquid fertilizer
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 35 , Issue 3 , May 1987 , pp. 412 - 417
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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