Publication Date
1989
Description
Morphological development of crops, including cool-season forage grasses, is mainly a function of air temperature. Morphological development of plants has been predicted from thermal units expressed as growing degree-days (GDD) (Franck, 1985 ; Wang, 1960). The use of thermal units also provides a predictive measure for managing forages based on growth stages rather than dates. However, forage digestibility nd crude protein (CP) content generally decrease as morphological development and time increase (Kamstra, 1973 ; Kilcher and Troelsen, 1973). The relationship between thermal units and forage digestibility and CP has not been defined for crested and western wheatgrasses. The primary purpose of this research was to define the relationship between thermal units and in vitro dry matter digestibility (IVDMD) and CP content for crested and western wheatgrass.
Citation
Franck, A` B. and Karn, J F., "Prediction of Digestibility and Protein from Growing Degree-Days for Crested and Western Wheatgrass" (2025). IGC Proceedings (1989-2023). 85.
https://uknowledge.uky.edu/igc/1989/session7/85
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Prediction of Digestibility and Protein from Growing Degree-Days for Crested and Western Wheatgrass
Morphological development of crops, including cool-season forage grasses, is mainly a function of air temperature. Morphological development of plants has been predicted from thermal units expressed as growing degree-days (GDD) (Franck, 1985 ; Wang, 1960). The use of thermal units also provides a predictive measure for managing forages based on growth stages rather than dates. However, forage digestibility nd crude protein (CP) content generally decrease as morphological development and time increase (Kamstra, 1973 ; Kilcher and Troelsen, 1973). The relationship between thermal units and forage digestibility and CP has not been defined for crested and western wheatgrasses. The primary purpose of this research was to define the relationship between thermal units and in vitro dry matter digestibility (IVDMD) and CP content for crested and western wheatgrass.
