Modeling the growth of alfalfa (Medicago sativa) in the Pampas region
Carrying capacity of grazing systems on the Pampas ( Argentina) and its secondary production depend on the aboveground net primary productivity ( ANPP) of their forage resources.While there is descriptive information about the seasonal variability in the productivity of grown perennial forage species, there is less information about the environmental controls of this variability from a long time series and spatially well distributed in the region.Among the cultivated species, the alfalfa ( Medicago sativ a) is the most important forage legume because the large sown area and the wide environmental gradient it occupies.Simulation models that allow estimating crop growth have been developed for various parts of the world (McCown et al., 1996).The objective of this study was to construct a model to estimate the PPNA for this species, from local soil and climate data.
lucerne primary productivity incident radiation actual evapotranspiration
Druille,M. Garbulsky,M.F. Deregibus,V.A.
Dept.Animal Production.Facultad de Agronomía.Universidad de Buenos Aires.Argentina.
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）