Demografia do perfilhamento e taxas de acúmulo de matéria seca em capim 'Tifton 85' sob pastejo
Open Access
- 1 December 2000
- journal article
- Published by FapUNIFESP (SciELO) in Scientia Agricola
- Vol. 57 (4) , 591-600
Abstract
Neste ensaio foram avaliados os parâmetros de densidade populacional, taxas de emissão e de mortalidade, proporção de perfilhos florescidos e acúmulo de matéria seca de forragem para a espécie Cynodon spp. cultivar Tifton 85. Os tratamentos corresponderam a quatro situações de altura do pasto (5, 10, 15 e 20 cm) mantidas constantes por ovinos sob regime de lotação contínua e taxa de lotação variável. O delineamento experimental foi o de blocos completos casualizados com quatro repetições. Foram utilizadas áreas (@ 0,0176 m²) delimitadas por anéis plásticos (PVC), onde todos os perfilhos existentes foram marcados com pequenas argolas plásticas coloridas e contados a cada avaliação. As taxas de acúmulo de matéria seca foram avaliadas utilizando-se a técnica da gaiola de exclusão, com mensuração da massa de forragem a cada 21 dias. Houve efeito (P0,10) de tratamento sobre as taxas de acúmulo de forragem.Keywords
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