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    Effect of post-fire defoliation on growth of two native grasses in the Caldenal, Argentina

    Peláez1 DV, RM Bóo2, MD Mayor3, OR Elia4, SA Martínez5

    Phyton-International Journal of Experimental Botany, Vol.78, pp. 17-24, 2009, DOI:10.32604/phyton.2009.78.017

    Abstract Plant growth in semiarid rangelands may be affected by time grazing is excluded during the post-fire regeneration period. The objective of this field work was to study the effect of post-fire defoliation at different phenological stages [vegetative (early-season defoliation) and internode elongation (late-season defoliation)] on growth of Piptochaetium napostaense and Poa ligularis, two very important perennial native grasses in the temperate semi-arid region of central Argentina (Caldenal). In general, the post-fire defoliation treatments did not affect the number of green leaves on tillers of P. napostaense. Early-season post-fire defoliation generally reduced the number of green leaves on tillers of… More >

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