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Effectiveness of Herbicides and Tillage on Quackgrass (Elytrigia repens) Control in Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

William S. Curran ,
Edward L. Werner  and
Nathan L. Hartwig
William S. Curran
Affiliation:
Dep. Agron., The Pennsylvania State Univ., University Park, PA 16802
Edward L. Werner
Affiliation:
Dep. Agron., The Pennsylvania State Univ., University Park, PA 16802
Nathan L. Hartwig
Affiliation:
Dep. Agron., The Pennsylvania State Univ., University Park, PA 16802
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Abstract

Postemergence applications of nicosulfuron and primisulfuron were compared to preplant glyphosate and atrazine plus simazine for quackgrass control in reduced tillage and no-till corn. The level of quackgrass control was reduced by no-till practices. At 6 wk after planting, glyphosate and atrazine plus simazine were most effective in controlling quackgrass. Quackgrass biomass 12 wk after planting indicated that the performance of the herbicides were generally similar, although primisulfuron was less effective in no-till. One year after corn planting, levels of quackgrass control in the tilled plots were the same as or better than in the no-till treatments. Atrazine plus simazine was the most effective herbicide treatment over tillage systems, while primisulfuron was the least effective.

Keywords

Atrazine, 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamineglyphosate, N-(phosphonomethyl)glycinenicosulfuron, 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl-N,N-dimethyl-3-pyridinecarboxamideprimisulfuron, 2-[[[[[4,6-bis(difluoromethoxy)-2-pyrimidinyl]amino]-amino]carbonyl]amino]sulfonyl]benzoic acidsimazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diaminequackgrass, Elytrigia repens (L.) Nevski. # AGRREcorn, Zea mays L. ‘Pioneer 3475’ and ‘Pioneer 3527.’Perennialsplit applicationsulfonylureaAgropyron repens# AGRRE
Type
Research
Information
Weed Technology , Volume 8 , Issue 2 , June 1994 , pp. 324 - 330
Copyright
Copyright © 1994 by the Weed Science Society of America 

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