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Weed Suppression for Weed Management in Corn (Zea mays) and Soybean (Glycine max) Production Systems

Published online by Cambridge University Press:  20 January 2017

David M. Alm ,
Loyd M. Wax  and
Edward W. Stoller
David M. Alm
Affiliation:
USDA-ARS, Crops Protection Research Unit, Crop Sciences Department, University of Illinois, Urbana, IL 61801
Loyd M. Wax
Affiliation:
USDA-ARS, Crops Protection Research Unit, Crop Sciences Department, University of Illinois, Urbana, IL 61801
Edward W. Stoller*
Affiliation:
USDA-ARS, Crops Protection Research Unit, Crop Sciences Department, University of Illinois, Urbana, IL 61801
*
Corresponding author's E-mail: [email protected].
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Abstract

Reduced herbicide inputs can diminish pesticide movement into water supplies, enhancing environmental quality. A 3-yr study was conducted to evaluate the efficacy and economic viability of reducing herbicide inputs by using ultra-low rates (ULRs), consisting of one-eighth the normal use rates of nicosulfuron plus thifensulfuron, delayed planting (DP), or both in corn and soybean. We compared the ULR treatment at the assigned cost of $12.35/ha with three other traditional types of weed management systems in both chisel plow and no-till production schemes. The ULR weed management system suppressed weeds enough to allow economical soybean production all 3 yr of the study, but this system proved viable only during the wettest year for corn. DP was economically competitive with the best systems in both crops under chisel-plowed tillage only in the driest year of the study.

Keywords

Nicosulfuronthifensulfuroncorn, Zea mays L. ‘Pioneer 3417’soybean, Glycine max L. Merr. ‘Williams 82’Delayed plantingdroughtenvironmentlow-rate inputno-tilltillageDP, delayed plantingHI, high inputPOST, postemergencePPI, preplant incorporatedULR, ultra-low rate
Type
Research Article
Information
Weed Technology , Volume 14 , Issue 4 , December 2000 , pp. 713 - 717
Copyright
Copyright © Weed Science Society of America 

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References

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