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Publication Date
1977
Description
Stand reduction in established fields of alfalfa (Medicago sativa L.) has often been observed. This may be related to an increase in nonphotosynthetically active tissue, causing respiration to exceed photosynthesis. Net carbon dioxide exchange rate (NCE) per unit leaf area and rate of respiration per gram of forage were determined from plants grown under field conditions. The uptake and evolution of carbon dioxide per plant were measured. The data suggest that the greater root mass of 2-year-old plants does add considerably to the evolution of carbon dioxide by the plant.
Citation
Moore, R A., "Net assimilation and longevity of Alfalfa stands" (1977). IGC Proceedings (1977-2023). 5.
(URL: https://uknowledge.uky.edu/igc/1977/sess1/5)
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Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Net assimilation and longevity of Alfalfa stands
Stand reduction in established fields of alfalfa (Medicago sativa L.) has often been observed. This may be related to an increase in nonphotosynthetically active tissue, causing respiration to exceed photosynthesis. Net carbon dioxide exchange rate (NCE) per unit leaf area and rate of respiration per gram of forage were determined from plants grown under field conditions. The uptake and evolution of carbon dioxide per plant were measured. The data suggest that the greater root mass of 2-year-old plants does add considerably to the evolution of carbon dioxide by the plant.
