Fluctuaciones minerales en pastos tropicales : I. Braquiaria en los Llanos Orientales
Mineral variation in Tropical grasses. I. Braquiaria in Llanos Orientales. This experiment was conducted at La Libertad experimental Station (Meta), using Brachiaria decumbens from August 78 to October 79. It was determined the nitrogen and mineral contents of weekly samples from areas with cattle under continuous grazing, during one year, (2,4 head per hectare). The content of minerals during the year in Brachiaria decumbens was high enough to supple the animal requeriments. Only the nitrogen, phosphorus, magnesium, copper and zinc were in siib-normal or deficient conditions. Season variations of Ca and Mg were found with high values in dry seasson but they were not significant. The Fe and Mn levels were high in both seasons, but significantly higher in dry season. This findings suggest that in areas planted with Brachiaria Decunib ens it might be necessary to supply only a few mineral elements (Ca. P. Cu and Zn) to guarantee the mineral requeriments for grazing cattle.
| Autores principales: | , |
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| Formato: | article biblioteca |
| Idioma: | spa |
| Publicado: |
Instituto Colombiano Agropecuario
1980
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| Materias: | Agricultura aspectos generales - A01, Fertilización - F04, Forraje verde, Minerales, Fertilización, Ganadería y especies menores, |
| Acceso en línea: | http://hdl.handle.net/20.500.12324/35301 |
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