Interference of Hogpotato (Hoffmanseggia glauca) with Cotton (Gossypium hirsutum)

The effects of hogpotato interference on cotton and of the crop on the weed were measured under field conditions in four environments. Full-season interference from 105 ± 21 hogpotato plants/m2 reduced cotton plant height by 14 to 44%. Conversely, weed dry weight was reduced 54% through full-season...

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Bibliographic Details
Published in:Weed science 1989-09, Vol.37 (5), p.688-694
Main Authors: Castner, Eric P., Murray, Don S., Hackett, Neil M., Verhalen, Laval M., Weeks, David L., Stone, John F.
Format: Article
Language:English
Subjects:
Agricultural soils
ALTURA
Bolls
CALIDAD
CARACTERES DE RENDIMIENTO
COMPETENCIA BIOLOGICA
COMPETITION BIOLOGIQUE
COMPOSANTE DE RENDEMENT
CONTENIDO DE AGUA EN EL SUELO
Cotton
Crop harvesting
Crops
FIBRAS VEGETALES
FIBRE VEGETALE
GOSSYPIUM HIRSUTUM
Growing seasons
HAUTEUR
LEGUMINOSAE
MALEZAS
MAUVAISE HERBE
Plants
QUALITE
RENDEMENT DES CULTURES
RENDIMIENTO DE CULTIVOS
Soil water
Soil water content
TENEUR EN EAU DU SOL
USO DEL AGUA
UTILISATION DE L'EAU
Weed Biology and Ecology
Weeds
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Summary:The effects of hogpotato interference on cotton and of the crop on the weed were measured under field conditions in four environments. Full-season interference from 105 ± 21 hogpotato plants/m2 reduced cotton plant height by 14 to 44%. Conversely, weed dry weight was reduced 54% through full-season interference from cotton. Lint yield reductions in cotton ranged from 31 to 98% following full-season weed interference. Interference during the first 7 weeks of crop growth reduced lint yield by approximately 40%; however, interference after 7 weeks of weed-free maintenance did not affect lint yield. Interference reduced boll size in 3 of 4 yr, lint percent in 2 of 4, and boll number in the only year it was measured. Cotton fiber length, uniformity index, and micronaire were reduced by full-season interference in 1 of 2 yr; however, fiber strength was not affected in either year. Significant use of soil water by hogpotato occurred at 120 cm and deeper in the soil while cotton used water primarily in the upper 75 cm.
ISSN:0043-1745
1550-2759
DOI:10.1017/S0043174500072647