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Weed Management in Peanut Using Stale Seedbed Techniques

Published online by Cambridge University Press:  12 June 2017

W. Carroll Johnson III  and
Benjamin G. Mullinix Jr.
W. Carroll Johnson III
Affiliation:
USDA-ARS and Agric. Res. Statistician, Coastal Plain Exp. Stn., Tifton, GA 31793-0748
Benjamin G. Mullinix Jr.
Affiliation:
USDA-ARS and Agric. Res. Statistician, Coastal Plain Exp. Stn., Tifton, GA 31793-0748
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Abstract

Field studies were conducted from 1991 through 1993 to determine the effects of stale seedbed management practices on weed control in peanut. Main plots were four levels of stale seedbed management: deep till (23 cm) and plant the same day (standard system), deep till 6 wk early and shallow till (7.6 cm) at 2 wk intervals prior to planting, deep till 6 wk early and application of glyphosate (1.1 kg ai ha−1) 1 wk prior to planting, and deep till 6 wk early without additional treatment prior to planting. Sub-plots were three levels of weed management following peanut planting; intensive, basic, and cultivation alone. Stale seedbed management practices stimulated weed emergence when followed by other control measures prior to planting. Populations of Florida beggarweed, Texas panicum, and yellow nutsedge were lower when stale seedbeds were shallow tilled at 2 wk intervals prior to planting, resulting in greater peanut yields. Weeds on nontreated stale seedbeds were difficult to control once peanut was planted and reduced yields. Stale seedbed management practices generally had no effect on the quantity of foreign material contaminants originating from weeds, soil, or peanut plant in harvested peanut. These results indicate that shallow tillage on stale seedbeds can reduce weed populations prior to planting and increase peanut yields.

Keywords

Chlorimuron, [2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoic acid]glyphosate, N-(phosphonomethyl)glycinesethoxydim, [2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one]Florida beggarweed, Desmodium tortuosum (Sw.) DC #3 DEDTOTexas panicum, Panicum texanum Buckl. # PANTEyellow nutsedge, Cyperus esculentus L. # CYPESpeanut, Arachis hypogaea L. ‘Florunner.’Cultural weed controlgroundnutseedbank depletion
Type
Weed Management
Information
Weed Science , Volume 43 , Issue 2 , June 1995 , pp. 293 - 297
Copyright
Copyright © 1995 by the Weed Science Society of America 

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