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Reducing Johnsongrass (Sorghum halepense) Interference in Corn (Zea mays) with Herbicides and Cultivation

Published online by Cambridge University Press:  12 June 2017

Gregory J. Steckel  and
Michael S. Defelice
Gregory J. Steckel
Affiliation:
Dep. Agron., Univ. Missouri, Columbia, MO 65211
Michael S. Defelice
Affiliation:
Dep. Agron., Univ. Missouri, Columbia, MO 65211
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Abstract

Field studies were conducted in 1990 and 1991 to evaluate johnsongrass control and interference in corn using combinations of nicosulfuron, EPTC + dichlormid, and cultivation. Nicosulfuron applied to 30-cm-tall rhizome johnsongrass provided greater control and corn yield than a later application to 60-cm-tall johnsongrass. Johnsongrass control and corn yield within the later nicosulfuron treatment were improved by a preplant application of EPTC. EPTC and/or cultivation alone provided less johnsongrass control and lower corn yield than nicosulfuron or handweeding.

Keywords

Dichlormid, 2,2-dichloro-N,N-di-2-propenylacetamidedietholate, O,O-diethyl-O-phenyl phosphorothioateEPTC, S-ethyl dipropyl carbamothioatenicosulfuron, 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamidejohnsongrass, Sorghum halepense (L.) Pers. # SORHAcorn, Zea mays L. ‘DeKalb 535.’CompetitioncultivationEPTCnicosulfuronSORHA
Type
Research
Information
Weed Technology , Volume 9 , Issue 1 , March 1995 , pp. 53 - 57
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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