%0 Journal Article
%T Comportamiento de la disponibilidad de biomasa y la composici車n qu赤mica en 23 accesiones de Leucaena spp. Performance of biomass availability and chemical composition of 23 Leucaena spp. accessions
%A Hilda B Wencomo
%A R Ortiz
%J Pastos y Forrajes
%D 2012
%I Estaci車n Experimental de Pastos y Forrajes "Indio Hatuey"
%X Se realiz車 un estudio con 23 accesiones de Leucaena spp. en un 芍rea que ten赤a seis a os de sembrada. El objetivo fue determinar, en las plantas establecidas, la biomasa total, la biomasa comestible, la biomasa le osa, el grosor del tallo y el n迆mero de ramas de cada accesi車n, y su composici車n bromatol車gica en condiciones de pastoreo simulado. La investigaci車n se realiz車 en la EEPF "Indio Hatuey" durante dos a os, en un suelo Ferral赤tico Rojo lixiviado, h迆mico nodular ferruginoso hidratado. Se utilizaron parcelas sencillas de 3 m x 6 m. En la biomasa comestible y sus componentes (hojas y tallos tiernos) existieron diferencias significativas (P<0,05) entre las 谷pocas de los dos a os. Se pudo constatar que la producci車n en la 谷poca lluviosa fue mayor que en la poco lluviosa, aunque no hubo diferencias entre la producci車n media de biomasa de las accesiones; para el caso de la biomasa total no se encontr車 diferencias significativas entre las 谷pocas. Se recomienda continuar los estudios para determinar, a largo plazo, el efecto de los indicadores evaluados en la disponibilidad y la persistencia de la arb車rea. A study was conducted with 23 Leucaena spp. accessions in an area which had been planted six years before. The objective was to determine, in the established plants, total biomass, edible biomass, ligneous biomass, stem diameter and number of branches in each accession, and its bromatological composition under simulated grazing conditions. The research was conducted at the EEPF "Indio Hatuey" during two years, on a hydrated ferruginous nodular humic lixiviated Ferralitic Red soil. Simple 3 m x 6 m plots were used. In the edible biomass and its components (leaves and fresh stems), there were significant differences (P<0,05) between the seasons of the two years. It could be observed that production was higher in the rainy season than in the dry season, although there were no differences among the mean biomass production of the accessions; in the case of total biomass no significant differences were found between seasons. To continue the studies is recommended, to determine, in the long term, the effect of the evaluated indicators on the availability and persistence of the tree.
%K Comportamiento
%K disponibilidad de nutrientes
%K Leucaena spp.
%K Leucaena spp.
%K nutrient availability
%K performance
%U http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0864-03942012000100004