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Texas Panicum (Panicum texanum) Control in Peanuts (Arachis hypogaea) with Paraquat

Published online by Cambridge University Press:  12 June 2017

Glenn Wehtje ,
John A. McGuire ,
Robert H. Walker  and
Michael G. Patterson
Glenn Wehtje
Affiliation:
Dep. Agron. and Soils, Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
John A. McGuire
Affiliation:
Res. Data Analysis, Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
Robert H. Walker
Affiliation:
Dep. Agron. and Soils, Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
Michael G. Patterson
Affiliation:
Dep. Agron. and Soils, Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
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Abstract

Paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) was applied to peanuts (Arachis hypogaea L. ‘Florunner’) for Texas panicum (Panicum texanum Buckl. # PANTE) control at 0.07, 0.14, and 0.28 kg ai/ha under five application schedules; a single application at 0, 1, 3, or 5 weeks after ground cracking, or multiple applications at 1 + 5 weeks or 1 + 3 + 5 weeks after ground cracking. Peanuts were planted at two different times (normal and late). A herbicide application at the third week (normal planting), or the third or fifth week after ground cracking (late planting) provided acceptable Texas panicum control. Control generally increased with rate. However, increasing paraquat rates with single applications on late-planted peanuts or multiple applications to normal- and late-planted peanuts tended to reduce yield and grade. A single application of 0.07 or 0.14 kg/ha applied the third week after ground cracking consistently provided the best balance between Texas panicum control and crop safety.

Keywords

Herbicide injurypeanut qualityPANTE
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 34 , Issue 2 , March 1986 , pp. 308 - 311
Copyright
Copyright © 1986 by the Weed Science Society of America 

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References

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