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Between-Row Mowing Systems Control Summer Annual Weeds in No-Till Grain Sorghum

Published online by Cambridge University Press:  20 January 2017

William W. Donald*
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, 269 Agricultural Engineering Building, University of Missouri Columbia, Columbia, MO 65211
*
Author's E-mail: cny00431@centurytel.net

Abstract

In previous research, use of PRE soil residual herbicides was reduced 50% in no-till corn and soybean by banding herbicides over crop rows followed by mowing weeds growing between rows two times. The research goals were (1) to determine whether such between-row mowing systems adequately controlled weeds and prevented grain yield loss in other competitive field crops, such as no-till grain sorghum, and (2) to compare broadcast herbicide treatments with between-row mowing systems. PRE atrazine plus dimethenamid at relative rates of 0.75× and 1× (where 1× = 1.7 plus 1.3 kg ai/ha, respectively) were band-applied over rows shortly after planting followed by two between-row mowings close to the soil surface. In 2 of 3 yr in Missouri, this system controlled giant foxtail and common waterhemp as well as broadcast herbicides in no-till sorghum. In 2 of 3 yr, between-row mowing systems also prevented yield loss in no-till sorghum as well as both broadcast herbicides at the same rates and the weed-free check.

Information

Type
Research
Copyright
Copyright © Weed Science Society of America 

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