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Compatibility and Efficiency of In-Row Cultivation for Weed Management in Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Mark J. Vangessel ,
Edward E. Schweizer ,
Donald W. Lybecker  and
Phil Westra
Mark J. Vangessel
Affiliation:
Dep. Plant Pathol. and Weed Sci., Colorado State Univ., Ft. Collins, CO 80523
Edward E. Schweizer
Affiliation:
Water Manage. Res., Agric. Res. Serv., U.S. Dep. Agric., Colorado State Univ., Ft. Collins, CO 80523
Donald W. Lybecker
Affiliation:
Dep. Agric. and Res. Econ., Colorado State Univ., Ft. Collins, CO 80523
Phil Westra
Affiliation:
Dep. Plant Pathol. and Weed Sci., Colorado State Univ., Ft. Collins, CO 80523
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Abstract

Information on the effects of multiple weed management tactics in corn is needed to develop integrated weed management systems. The effectiveness and compatibility of an in-row cultivator as compared to a standard interrow cultivator used with reduced rates of a soil-applied herbicide, rotary hoeing, and/or a bioeconomic model for POST herbicide selection was examined. Weed control with a single rotary hoeing at corn emergence controlled annual weeds similarly to two rotary hoeings. One-third recommended use rate of alachlor controlled weeds similarly to a two-thirds rate. Reduced rates of alachlor controlled more weeds than rotary hoeing over 2 yr. The in-row cultivator required early-season weed control (rotary hoeing or reduced alachlor rate) for optimum efficacy. The in-row cultivator provided better weed control than the standard cultivator while the cost of operating the two cultivators was similar. Thus, the in-row cultivator was more efficient than the standard cultivator. Furthermore, less intensive early-season weed control was required with the in-row cultivator for maximum weed control as compared to the standard cultivator. Rotary hoeing plus the in-row cultivator provided similar weed control to other weed management tactics that required both soil-applied and POST herbicides. Gross margin was influenced more by corn yield than cost of weed management tactics.

Keywords

Alachlor, 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamidecorn, Zea mays L.Bioeconomic weed management modelintegrated weed managementreduced herbicide ratesrow-crop cultivatorrotary hoeWEEDCAMAmaranthus retroflexusEchinochloa crus-galliEuphorbia dentataSolanum sarrachoidesAMAREECHCGEPHDESOLSA
Type
Research
Information
Weed Technology , Volume 9 , Issue 4 , December 1995 , pp. 754 - 760
Copyright
Copyright © 1995 by the Weed Science Society of America 

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