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Publication Date
1977
Description
Alfalfa (Medicago sativa L.) herbage accumulation, photosynthetic rate, and respiration rate were simulated over a 6-week period under three temperature regimes. The simulations were based on SIMED, a model of the growth and development of alfalfa. Highest herbage yields were noted under the 15 °C regime and lowest under the 25 °C regime. Herbage yields under the 20 °C regime were slightly less than under the 15 °C regime. These yield differences were due to higher photosynthetic rates, lower respiration rates, and a slower maturation rate under the 15 and 20 °C regimes compared to the 25 °C regime.
Citation
Bula, R J.; Miles, G E.; Schreiber, M M.; and Holt, D A., "Evaluation of environmental conditions and physiological processes limiting alfalfa production using SIMED" (1977). IGC Proceedings (1977-2023). 10.
(URL: https://uknowledge.uky.edu/igc/1977/sess1/10)
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Evaluation of environmental conditions and physiological processes limiting alfalfa production using SIMED
Alfalfa (Medicago sativa L.) herbage accumulation, photosynthetic rate, and respiration rate were simulated over a 6-week period under three temperature regimes. The simulations were based on SIMED, a model of the growth and development of alfalfa. Highest herbage yields were noted under the 15 °C regime and lowest under the 25 °C regime. Herbage yields under the 20 °C regime were slightly less than under the 15 °C regime. These yield differences were due to higher photosynthetic rates, lower respiration rates, and a slower maturation rate under the 15 and 20 °C regimes compared to the 25 °C regime.
