Interference and Control of Hogpotato (Hoffmanseggia Glauca) in Cotton (Gossypium Hirsutum)
Abstract
The effects of hogpotato interference on cotton lint yield and fiber quality were measured under field conditions. Lint yield reductions ranged from 42 to 99% following full-season weed interference. Interference during the first 7 weeks of crop growth reduced lint yields by 41%. Interference which began after 7 weeks of weed-free maintenance resulted in a lint yield reduction of only 5%. Full-season hogpotato interference significantly reduced cotton height. Weed dry weight was significantly reduced by full-season competition with cotton. Cotton fiber quality was measured at one location and was affected in 1 of 2 years. Volumetric soil moisture readings indicated significant extraction of soil water by hogpotato at depths of 122 em and deeper in the soil profile while treatments with cotton were extracting the majority of soil water in the upper 46 em of the profile. Nomenclature: hogpotato, Hoffmanseggia glauca (Ortega)Eifert #1 HOFDE; cotton, Gossypium hirsutum L. 'Paymaster 404' and 'Paymaster 145'. Additional index words. Crop height, competition, lint yield, soil moisture, volumetric soil water, Hoffmanseggia densiflora, HOFDE.
Collections
- OSU Theses [15752]