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Low-Cost Weed Control Systems for Close-Row Peanuts (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

John Cardina ,
Aubrey C. Mixon  and
Glenn R. Wehtje
John Cardina
Affiliation:
U.S. Dep. Agric. Res. Serv., Agron. Dep., Univ. Georgia Coastal Plain Exp. Stn., Tifton, GA
Aubrey C. Mixon
Affiliation:
U.S. Dep. Agric. Res. Serv., Agron. Dep., Univ. Georgia Coastal Plain Exp. Stn., Tifton, GA
Glenn R. Wehtje
Affiliation:
Agron. Dep., Auburn Univ. Agric. Exp. Stn., Auburn, AL 36830
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Abstract

Weed control, yield, quality, and net return in reduced-cost and standard weed control systems were studied in “Sunbelt runner’ peanuts (Arachis hypogaea L.) planted in a twin-row pattern in 1982 to 85 at Tifton, GA, and 1982 to 84 at Headland, AL. Reduced herbicide rates and/or less expensive herbicides were used to decrease weed control costs. In years and locations where weed populations were low there were no differences in weed control, crop yield, or quality. The lowest cost treatment, which included three applications of paraquat (1,1′-dimethyl-4,4′-bipyridinium ion), caused reduced weed control at both locations in 1982 and reduced yield in 1982 and 1984. None of the systems consistently resulted in the highest weed control, crop yield, or quality. A system including reduced rates of preplant-incorporated herbicides followed by two applications of paraquat performed as well as the standard system but cost about 40% less. Due to low cost and generally high yields this system resulted in consistently high net returns. Results indicate that the potential exists for reducing herbicide inputs without sacrificing yield or quality.

Keywords

Arachis hypogaeaeconomics
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 35 , Issue 5 , September 1987 , pp. 700 - 703
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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