Publication Date
1989
Description
Livestock activity in the arid and semiarid regions of the west central part of Argentina is mainly based on native grasses. On the plain areas of Mendoza province, the most important grasses are perennial, warm-season species, adapted to water stress, high temperature and high irradiance conditions (Cavagnaro, 1988). Mean rainfall of the area reached at 264 mm during the growing season. Trichloris crinita is one of the outstanding species in many areas of the mentioned region. In order to preserve genetic variability of natural populations, IADIZA (Instituto Argentino de Investigacion de Zonas Aridas) initiated a germplasm bank of native forage grasses. The project postulated the possibility of exploring genetic resources to select ecotypes with high productivity and high nutritional composition. Many populations were evaluated in their phenological, morphological and physiological aspects. Significant differences were found among ecotypes (unpublished). There are studies in the semiarid region showing differences among species in productivity and nutritional values (Rabotnikof et al. 1986a, 1986b) but no study is known on the arid region, neither at specific or at ecotypic level. The objective of this work was to evaluate productivity and nutritional quality of three ecotypes of Trichloris crinita differing in growth habits and morphological features.
Citation
Silva Colomer, J; Cavagnaro, J B.; Lemes, J; and Medero, M, "Productivity and Nutritive Values in Three Ecotypes of Trichloris crinita, Native Forage Grass of the Arid Zones of Argentina" (2025). IGC Proceedings (1989-2023). 30.
https://uknowledge.uky.edu/igc/1989/session7/30
Included in
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Productivity and Nutritive Values in Three Ecotypes of Trichloris crinita, Native Forage Grass of the Arid Zones of Argentina
Livestock activity in the arid and semiarid regions of the west central part of Argentina is mainly based on native grasses. On the plain areas of Mendoza province, the most important grasses are perennial, warm-season species, adapted to water stress, high temperature and high irradiance conditions (Cavagnaro, 1988). Mean rainfall of the area reached at 264 mm during the growing season. Trichloris crinita is one of the outstanding species in many areas of the mentioned region. In order to preserve genetic variability of natural populations, IADIZA (Instituto Argentino de Investigacion de Zonas Aridas) initiated a germplasm bank of native forage grasses. The project postulated the possibility of exploring genetic resources to select ecotypes with high productivity and high nutritional composition. Many populations were evaluated in their phenological, morphological and physiological aspects. Significant differences were found among ecotypes (unpublished). There are studies in the semiarid region showing differences among species in productivity and nutritional values (Rabotnikof et al. 1986a, 1986b) but no study is known on the arid region, neither at specific or at ecotypic level. The objective of this work was to evaluate productivity and nutritional quality of three ecotypes of Trichloris crinita differing in growth habits and morphological features.
