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Palmer Amaranth (Amaranthus palmeri) Impacts on Yield, Harvesting, and Ginning in Dryland Cotton (Gossypium hirsutum)

Published online by Cambridge University Press:  20 January 2017

Dudley T. Smith ,
Roy V. Baker  and
Gregory L. Steele
Dudley T. Smith*
Affiliation:
Department of Soil and Crop Sciences, Texas Agricultural Experiment Station, Texas A&M University, College Station, TX 77843-2474
Roy V. Baker
Affiliation:
Cotton Harvesting and Ginning Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Lubbock, TX 79401
Gregory L. Steele
Affiliation:
Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843-2474
*
Corresponding author's E-mail: [email protected].
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Abstract

The impact of Palmer amaranth on mechanical harvesting, ginning, and fiber quality in dryland cotton was documented. Only the highest Palmer amaranth density (3,260 weeds/ha) reduced lint and seed yields. However, all weed densities increased harvesting time 2- to 3.5-fold. Two factors increased the time required for stripper harvesting: slower ground speeds due to large weeds and work stoppages that required hand removal of weed stems lodged in the harvester. Ninety-eight percent of the weedy plant material was discarded in the field by the harvester, and the remaining 2% was successfully removed in ginning and lint-cleaning processes. Weed infestations did not result in any differences in moisture content of seed cotton, ginning time, fiber quality, or the percentage of cleaned lint.

Keywords

Cotton, Gossypium hirsutum L.Palmer amaranth, Amaranthus palmeri S. Wats. # AMAPACompetitionfiber qualityPPI, preplant incorporated
Type
Research
Information
Weed Technology , Volume 14 , Issue 1 , March 2000 , pp. 122 - 126
Copyright
Copyright © Weed Science Society of America 

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References

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