Abstract

BERNAL-FLORES, Álvaro et al. Seasonal growth curve of native grasses in an oak forest, in the State of México, México. Agrociencia [online]. 2006, vol.40, n.1, pp.39-47. ISSN 2521-9766.

Knowledge of the herbage production of native grasses, in forest areas during the growing season, is a useful tool for improving the utilization of grasslands. The aim of this investigation was to determine the curve of herbage accumulation, average growth rate and crude protein of native grasses at different regrowth age, in three areas with different tree and shrub densities: high in trees and high in shrubs (HT+Hs), intermediate in trees and low in shrubs (IT+Ls) and low in trees and intermediate in shrubs (LT+Is), in the State of México. A randomized complete blocks design with four replicates was used. In 2001 and 2002, Brachypodium mexicanum recorded the highest herbage mass and average growth rate in the area HT+Hs, whereas Muhlenbergia rigida and Piptochaetium fimbriatum obtained it in area LT+Is. The highest crude protein was recorded in P. fimbriacum at 20 d of regrowth.

Keywords : Brachypodium mexicanum; Muhlenbergia rigida; Piptochaetium fimbriatum; growth analysis; herbage mass; rangelands.

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