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Effects of Florida Beggarweed (Desmodium tortuosum) and Sicklepod (Cassia obtusifolia) on Peanut (Arachis hypogaea) Yield

Published online by Cambridge University Press:  12 June 2017

Ellis W. Hauser ,
Gale A. Buchanan ,
Robert L. Nichols  and
Richard M. Patterson
Ellis W. Hauser
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Tifton, GA 31793
Gale A. Buchanan
Affiliation:
Alabama Exp. Stn., Auburn, AL 36830
Robert L. Nichols
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Tifton, GA
Richard M. Patterson
Affiliation:
Auburn Univ.
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Abstract

Florida beggarweed [Desmodium tortuosum (Sw.) DC] reduced peanut (Arachis hypogaea L. ‘Florunner′) yields more than sicklepod (Cassia obtusifolia L.) when the crop and weeds were allowed to compete for the full season. Regression analyses within years indicated peanut yield reductions of 15.8 to 30.2 kg/ha for each Florida beggarweed per 10 m2 vs. 6.1 to 22.3 kg/ha for each sicklepod per 10 m2. Each kilogram fresh weight per hectare of Florida beggarweed reduced peanut yields 0.15 to 0.74 kg/ha. Reductions in peanut yields ranged from 0.08 to 0.23 kg/ha for each kilogram fresh weight per hectare of sicklepod. Peanut yield reductions correlated more closely with the weights of the weeds than with their populations.

Keywords

Crop-weed complexthresholdweed-competitioncrop-weed competition
Type
Research Article
Information
Weed Science , Volume 30 , Issue 6 , November 1982 , pp. 602 - 604
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

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