Author(s):
Zanine, Anderson de Moura ; Nascimento Júnior, Domicio do ; Sousa, Braulio Maia de Lana ; Silveira, Márcia Cristina Teixeira da ; Silva, Wilton Ladeira da [UNESP] ; Santos, Manoel Eduardo Rozalino
Date: 2014
Persistent ID: http://hdl.handle.net/11449/30877
Origin: Oasisbr
Subject(s): grazing frequency; grazing intensity; Panicum maximum; plant ecophysiology; grazing frequency; grazing frequency; grazing intensity; grazing intensity; Panicum maximum; Panicum maximum; plant ecophysiology; plant ecophysiology
Description
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This study was carried out to analyze the tillering profile of Guinea grass (Panicum maximum cv. Tanzania) pastures subjected to two grazing frequencies (time necessary to intercept 90 and 95% of the incoming light) and two post-grazing heights (30 and 50 cm) in the period from November 2005 to October 2006. The experimental design was of completely randomized blocks with three replications, in a 2 × 2 factorial arrangement. At the end of the spring, pastures managed with 90% light interception showed greater tiller appearance rates in relation to pastures managed with 95%, regardless of post-grazing height. In the summer and fall, pastures managed with post-grazing height of 30 cm showed higher tiller appearance rates in comparison with pastures managed at 50 cm, regardless of grazing frequency. Concerning the tiller mortality rates, in the summer, higher values were found for pastures managed at 90/50 and 95/30 (interception/height), intermediate values at 90/30 and lower values in those managed at 95/50. Pastures managed at 90/30, 95/30 and 95/50 in the fall presented greater tiller mortality rates than those managed at 90/50. These differences do not occur in the winter/beginning of spring. The stability index remained above 1 all through the experimental period. All management strategies evaluated are adequate for Guinea grass.
UFMT Departamento de Zootecni
UFV Departamento de Zootecnia
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) PECUÁRIA SUL
UNESP Departamento de Zootecnia
UFU Faculdade de Medicina Veterinária e Zootecnia
UNESP Departamento de Zootecnia
