Produção Nacional
Revisado por pares
Desempenho e composição química de missioneira-gigante cultivada em sistema silvipastoril tradicional em duas alturas de pastejo
2016; Volume: 59; Issue: 4 Linguagem: Inglês
10.4322/rca.2421
ISSN2177-8760
AutoresAna Lúcia Hanisch, Daniel Dalgallo, Edison Xavier de Almeida, Raquel Rejane Bonato Negrelle,
Tópico(s)Soil Management and Crop Yield
ResumoAiming to subsidize grazing management activities in silvopastoral systems, the results of the evaluation of tree shade effect on forage availability, chemical composition and chlorophyll content of missionary giant grass cv.SCS 315 giant Catarina (Axonopus catharinensis Valls), managed in two heights grazing in rotational grazing system are presented.The experiment was conducted for two years, in rural property with traditional silvopastoral system in southern Brazil (caívas) in the city of Porto União, Santa Catarina State, Brazil.We used completely randomized design in a 2 x 2 factorial scheme with four treatments, formed by the interaction between two environments (sun and shade) and two grazing input heights (30 and 60 cm), under rotational grazing.None of the variables pasture was affected by grazing height.There was also no interaction between shade and grazing height.The average shading promoted by the tree layer was 60% and affected the availability of forage during the growing season, with near 50% reduction in the shaded area.It was recorded an increase in the crude protein content and phosphorus content in the chemical composition of forages and b chlorophyll content in leaves grown in the shade.The giant missionary reduces by 50% the availability of forage with increased shading above 50%, but promotes an increase in crude protein and phosphorus content in the leaves.
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