Data/hora: 14/06/2024 20:41:01

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 22/08/2000
Data da última atualização: | 22/08/2000
Autoria: | MACEDO, M. C.; EUCLIDES, V. P. B.
Título: | Changes in soil fertility and plant nutrient contents in degraded tropical pasture after renovation.
Ano de publicação: | 1999
Fonte/Imprenta: | In: INTERNATIONAL GRASSLAND CONFERENCE, 18., 1997, Winnipeg and Saskatoon. Proceedings. [S.l.]: Canadian Forage Council/Canadian Society of Agronomy/Canadian Society of Animal Science, 1999.
Idioma: | Inglês
Notas: | Grasslands 2000.
Conteúdo: | A grazing experiment was conducted on an Oxisol testing five degraded tropical grasses renocated with two levels two levels of fertilizer with the objective to study seasonal changes in plant nutrient contents and soil fertility. Total dry matter availability, green and dead matter availabilities, nutrient concentration in leaf tissue and soil fertility were the parameters measured. Availability of forage and leaf nutrients was significantly dependent on seasonal changes with green matter on offer decreasing over years. Soil fertility increased after renovation and declined thereafter. Soil available-P decreased it was related to sustainability of green matter on offer. Soil organic matter mineralization was the greater N source to plants. Lack of regular N supply plus soil-P decline would be responsible for decreasing of stocking rate and animal production.
Palavras-Chave: | Pastagem degradada.
Thesagro: | Brachiaria; Cerrado; Fósforo; Matéria Orgânica; Oxisol.
Thesaurus Nal: | Ferralsols; organic matter; Panicum; phosphorus.
Categoria do assunto: | --
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (12223-1) - ADD - PL - -- - CRI5304 -  - CRI5304 - DIS