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Archivos Latinoamericanos de Produccion Animal
Asociacion Latinoamericana de Produccion Animal
ISSN: 1022-1301
EISSN: 1022-1301
Vol. 17, No. 3-4, 2009, pp. 97-102
Bioline Code: la09014
Full paper language: Spanish
Document type: Research Article
Document available free of charge

Archivos Latinoamericanos de Produccion Animal, Vol. 17, No. 3-4, 2009, pp. 97-102

 es Efeito de sombreamento no estabelecimento de Panicum maximum check for this species in other resources cv. Mombaça
da Matta, P. Moraes; Souto, S. M.; Dias, P. F.; Colombari, A. A.; de Azevedo, B. Campbell & Vieira, M. de Souza

Resumen

O interesse pelo estudo de estabelecimento de forrageiras à sombra tem crescido, principalmente, quando a intenção é para associar espécies forrageiras e árvores para constituir os sistemas silvipastoris. Objetivo desta pesquisa foi avaliar a influência de quatro níveis (0, 25, 50 e 75%) de sombreamento artificial em 12 variáveis: altura da plant (AP), número de perfilhos (NP), número de folhas (NF), área foliar (AF), massa seca: de raiz (MSR), de folha (MSF), de total (MST); relação parte aérea:raiz (PA/R), área foliar específica (AFE), razão de área foliar (RAF), razão de massa radicular (RMR) e foliar (RMF), na fase de estabelecimento de plantas de cultivar Mombaça de Panicum maximum. Delineamento experimental adotado foi o de blocos ao acaso, com três repetições. Resultados mostraram que os maiores valores para AP e MSF (por meio de análise de variância e regressão), AF e MST (por regressão) e NT e MSR (alta tendência) nas plantas do cultivar Mombaça foram obtidos no mais alto nível (75%) de sombreamento, o que leva os autores recomendá-lo seu uso nos sistemas silvipastoris ou agrosilvipastoris.

Palabras-clave
Altura da planta, Massa seca foliar, Massa seca radicular, Panicum maximum, Sobreamento

 
 en Effect of shading on the establishment of Panicum maximum check for this species in other resources cv. Mombaça
da Matta, P. Moraes; Souto, S. M.; Dias, P. F.; Colombari, A. A.; de Azevedo, B. Campbell & Vieira, M. de Souza

Abstract

Interest in studying forage establishment in the shade has increased, principally when the intention is to associate forage species and trees to constitute sylvopastoral systems. The objective of this research was to evaluate the influence of four levels (0, 25, 50, and 75%) of artificial shading on 12 variables: plant height (PH), number of tiller (NT), number of leaves (NL), leaf area (LA), dry matter of roots (DMR), dry matter of leaves (DML), dry matter total (DMT), leaf area (LA), specific leaf area (SLA), ratio of leaf area (RLA), of root matter (RRM) and of leaf matter (RLM), in the establishment phase of Mombaça grass. The experimental design was randomized blocks with three replications. The results showed that the highest values for PH and DML (by univariate analysis of variance and regression analysis), LA, and DMT (by regression analysis) and NT and DMR (by high tendency) of Mombaça grass were obtained at the level of 75% of shading. Thus the authors recommend this level of shading to be used in pastoral-forest or agropastoral-forest systems.

Keywords
Leaf dry matter, Panicum maximum, Plant height, Root dry matter, Shading

 
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