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On-Farm Evaluation of Mechanical and Chemical Weed Management Practices in Corn (Zea mays)

  • Robert G. Hartzler (a1), Brad D. Van Kooten (a1), David E. Stoltenberg (a1), Elaine M. Hall (a1) and Richard S. Fawcett (a1)...

Abstract

Combinations of rotary hoeing, cultivation, and band- or broadcast-applied herbicides were compared for weed management in corn at 64 locations in Iowa from 1987 to 1991. Cultivation alone resulted in denser weed populations than herbicide treatments at 41% of the locations; however, corn yields were reduced at only 22% of the locations when weeds were controlled mechanically rather than with herbicides. Compared with broadcast applications, herbicides applied in a band resulted in increased weed populations at 8% of the locations; however, corn yields were reduced at only 1% of the locations.

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On-Farm Evaluation of Mechanical and Chemical Weed Management Practices in Corn (Zea mays)

  • Robert G. Hartzler (a1), Brad D. Van Kooten (a1), David E. Stoltenberg (a1), Elaine M. Hall (a1) and Richard S. Fawcett (a1)...

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