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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
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
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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.

Keywords

Atrazinedimethenamidgiant foxtail, Setaria faberii (L.) Beauv. SETVIcommon waterhemp, Amaranthus rudis Sauer. AMATAcorn, Zea mays L. ZEAMXsorghum, Sorghum bicolor (L.) Moench SORVU ‘Northup King GS10’ and ‘Pioneer 84G62’soybean, Glycine max (L.) MerrAlternative weed controlapplicationbandingcuttingmechanical weed controlnonchemical weed controlreduced rate herbicide
Type
Research
Information
Weed Technology , Volume 21 , Issue 2 , June 2007 , pp. 511 - 517
Copyright
Copyright © Weed Science Society of America 

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