On-Farm Evaluation of Mechanical and Chemical Weed Management Practices in Corn (Zea mays)
- 1 March 1993
- journal article
- Published by Cambridge University Press (CUP) in Weed Technology
- Vol. 7 (4) , 1001-1004
- https://doi.org/10.1017/s0890037x00038148
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.Keywords
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