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Diversity and No-Till: Keys for Pest Management in the U.S. Great Plains

Published online by Cambridge University Press:  20 January 2017

Randy L. Anderson
Randy L. Anderson*
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, Brookings, SD 57006
*
Corresponding author's E-mail: [email protected]
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Abstract

No-till systems and crop residue management have changed cropping systems in the Great Plains. Previously, winter wheat-fallow was the prevalent rotation; now producers grow warm-season crops along with winter wheat and fallow. With this diversity of crops, producers have developed an ecological approach to weed management where cultural tactics disrupt weed population growth. Producers using this approach are managing weeds with 50% less cost compared with the winter wheat-fallow rotation. Two key components of the multitactic approach are devising rotations comprised of two cool-season crops followed by two warm-season crops with the use of no-till practices. Fallow, if used, serves in either seasonal category. The cycle-of-four rotation also minimizes severity of plant diseases, thereby increasing crop yield potential. Net returns are increased with crop diversity and no-till compared with winter wheat-fallow and tillage. Reduced cost of weed management is a major factor of improved net returns, as well as increased land productivity.

Keywords

Winter wheat, Triticum aestivum L.Competitive canopiesecological approachrotation design
Type
Symposium
Information
Weed Science , Volume 56 , Issue 1 , February 2008 , pp. 141 - 145
Copyright
Copyright © Weed Science Society of America 

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