Interaction of Cotton (Gossypium hirsutum) and Velvetleaf (Abutilon theophrasti) Plants for Water is Affected by Their Interaction for Light
| Autor: | James M. Chandler, Clay D. Salisbury |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
0106 biological sciences
Abutilon biology media_common.quotation_subject Environment controlled Humidity 04 agricultural and veterinary sciences Plant Science biology.organism_classification 01 natural sciences Gossypium hirsutum Competition (biology) 010602 entomology Horticulture Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Shading Agronomy and Crop Science media_common Transpiration |
| Zdroj: | Weed Science. 41:69-74 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s004317450005760x |
| Popis: | Transpirations of cotton and velvetleaf plants competing for water and light were estimated with heat balance stem flow gauges in a controlled environment. Cotton and velvetleaf plants were grown together in pots and monitored during fluctuations in soil water, irradi- ance, air temperature, and humidity. Shading from other plants imposed light competition on velvetleaf or cotton. Velvetleaf used signiflcantly more water than cotton given ample water and light. Transpiration by both species was reduced in dry soil, but velvetleaf transpiration was reduced primarily by leaf abscision, while cotton leaves did not abscise. Both cotton and velvetleaf plants transpired signiflcantly less when shaded. Leaf water potentials indicated that shaded plants experienced reduced evaporative demand suggesting that shading reduced plant stress in dry soil. Competition for water was strongly influenced by competition for light. Nomen- clature: Velvetleaf, Abutilon theophrasti Medik. #3 ABUTH; cotton, Gossypium hirsutum L. Additional index words: Water competition, light competi- tion, stem flow gauge. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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