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Interference of Unicorn-Plant (Proboscidea louisianica) with Cotton (Gossypium hirsutum)
- Source :
- Weed Science. 35:807-812
- Publication Year :
- 1987
- Publisher :
- Cambridge University Press (CUP), 1987.
-
Abstract
- Full-season interference from unicorn-plant [Proboscidea louisianica(Mill.) Thell. # PROLO] at densities ranging from 0 to 32 weeds/10 m row was measured on weed and cotton (Gossypium hirsutumL. ‘Westburn M′) parameters in three Oklahoma environments. Linear regression models using log10transformations were superior to linear and comparable to quadratic models in estimating the impact of inter- and intraspecific competition. Weed measurements on an individual plant basis were not reliable indicators of interference. Weed dry biomass, ground cover, and seed capsule production/plot generally increased with increasing weed densities. In the three environments, densities of two, four, and eight weeds/10 m row initially reduced cotton plant height. Maximum height reductions averaged 20, 28, and 43% in the three environments but did not detrimentally affect the mechanical harvest of cotton. As unicorn-plant density (expressed in log10units) doubled (within a range of 1 to 32 plants/10 m of row), lint yield reductions ranged from 84 to 146 kg/ha. Maximum lint yield losses averaged 59, 65, and 74% in the three environments. Transforming lint yield/plot to a percentage of that from weed-free plots resulted in a single quadratic equation applicable over environments. Unicorn-plant at the highest weed density reduced fiber fineness, uniformity, and length, but not fiber strength.
- Subjects :
- 0106 biological sciences
Proboscidea louisianica
Lint
Biomass (ecology)
biology
media_common.quotation_subject
04 agricultural and veterinary sciences
Plant Science
biology.organism_classification
Gossypium
01 natural sciences
Gossypium hirsutum
Competition (biology)
Intraspecific competition
010602 entomology
Horticulture
Agronomy
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Weed
Agronomy and Crop Science
media_common
Mathematics
Subjects
Details
- ISSN :
- 15502759 and 00431745
- Volume :
- 35
- Database :
- OpenAIRE
- Journal :
- Weed Science
- Accession number :
- edsair.doi...........a95ce6d73b05572e13d39b048b538054