Dinâmica, produção e valor nutritivo de pastagens tendo como base o capim-elefante consorciado com amendoim forrageiro
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Data
2023-03-06Primeiro membro da banca
Viégas, Julio
Segundo membro da banca
Aguirre, Priscila Flôres
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Mostrar registro completoResumo
Elephant grass stands out for its high potential for forage production in different regions of the
country. In most properties, elephant grass is cultivated intensively with high doses of mineral
fertilizers, mainly nitrogen fertilizers, which makes production expensive and less sustainable.
In this context, intercropping elephant grass with forage legumes can make the system more
efficient and with less environmental impact. Thus, the objective of this research was to
evaluate forage systems, regarding the dynamics, production and nutritional value of the
pastures, and stocking rate, based on elephant grass intercropped with forage peanut under
grazing conditions with lactating cows over the course of an agricultural year. The treatments
consisted of two forage systems (with x without legumes). The standardization criterion for
forage systems was the level of nitrogen fertilization (120 kg/ha/year of N). Pre- and postgrazing forage samples were taken to determine the botanical composition of pastures and
morphological composition of elephant grass, and to estimate forage production. Forage
samples, simulating grazing, were collected manually at the beginning and at the end of each
grazing to evaluate the nutritive value. The presence of forage peanuts affected the botanical
composition of the pasture, with a reduction in spontaneously growing species and dead
material, as well as in the morphology of elephant grass, with a higher proportion of leaf blades,
and less stem plus sheath and senescent material. In the forage system with legume, there was
an increase in forage production and stocking rate and better nutritional value of forage.
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