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Weed and Corn (Zea mays) Responses to a Hairy Vetch (Vicia villosa) Cover Crop

Published online by Cambridge University Press:  12 June 2017

Melinda L. Hoffman ,
Emilie E. Regnier  and
John Cardina
Melinda L. Hoffman
Affiliation:
Dep. Agron., Ohio State Univ., Columbus, OH 43210
Emilie E. Regnier
Affiliation:
Dep. Agron., Ohio State Univ., Columbus, OH 43210
John Cardina
Affiliation:
Ohio Agric. Res. and Dev. Cent., Wooster, OH
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Abstract

Field studies were conducted in 1990 and 1991 to determine the effects of corn planting date and hairy vetch control method on the efficacy of fall-planted hairy vetch as a weedsuppressive cover crop for no-till corn. Glyphosate controlled hairy vetch when applied at the early bud growth stage (April), but hairy vetch residue provided no weed control compared to the weedy check. Mowing was not an effective means of suppressing hairy vetch at the early bud stage. Untreated hairy vetch reduced weed biomass 96% in 1990 and 58% in 1991 but reduced yield over 76% in April-planted corn. There was no competition of untreated hairy vetch with corn when corn planting was delayed until May or June (mid- or late-bloom growth stages of hairy vetch). Corn planted in May into untreated hairy vetch yielded similarly to corn planted in a no-cover weed-free check.

Keywords

Glyphosate, N-(phosphonomethyl)glycinecorn, Zea mays (L.) ‘OF9 X LH82’common lambsquarters, Chenopodium album L. # CHEAL, hairy vetch, Vicia villosa (Roth) # VICVICultural weed controlmulchalternative agriculturereduced herbicide
Type
Research
Information
Weed Technology , Volume 7 , Issue 3 , September 1993 , pp. 594 - 599
Copyright
Copyright © 1993 by the Weed Science Society of America 

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