Data/hora: 06/06/2024 17:12:37

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 30/11/2016
Data da última atualização: | 23/02/2017
Autoria: | LOPES, M. N.; CÂNDIDO, M. J. D.; POMPEU, R. C. F. F.; SILVA, R. G. da; MORAIS NETO, L. B. de; CARNEIRO, M. S. de S.
Afiliação: | Marcos Neves Lopes, Pós-graduação - Universidade Federal do Ceará (UFC) - Fortaleza, CE, Brasil; Magno José Duarte Cândido, UFC - Fortaleza, CE, Brasil; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; Rodrigo Gregório da Silva, Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE) - Limoeiro do Norte, CE, Brasil; Luiz Barreto de Morais Neto, UFC - Fortaleza, CE, Brasil; Maria Socorro de Souza Carneiro, UFC - Fortaleza, CE, Brasil.
Título: | Tillering dynamics in massai grass fertilized with nitrogen and grazed by sheep.
Ano de publicação: | 2016
Fonte/Imprenta: | Bioscience Journal, v. 32, n. 2, p. 446-454, Mar./Apr. 2016.
Idioma: | Inglês
Conteúdo: | To evaluate the tillering dynamics of massai grass under rotational sheep stocking and fertilized with nitrogen (control - 0; 400; 800 and 1200 kg ha-1 year-1), this study was carried out, in a completely randomized design with repeated measures over time. The mob-grazing technique was applied to perform the grazing by employing groups of animals for rapid defoliation. The tiller appearance, survival and mortality rates, tiller biomass, and green/dead tillers ratio, have presented increase responses to nitrogen levels, with the three rates and the tiller biomass varying between evaluation periods. There was a quadratic response for the tiller flowering rate, population density of vegetative and reproductive tillers, reaching maximum values (0.051 tiller 100 tiller-1 day-1; 4,818 and 35 tillers m-2, respectively) under the nitrogen levels of 613.5; 993.5 and 623.9 kg ha-1 year-1, respectively. For the tiller flowering rate and population density of reproductive tillers, it was verified a fluctuation between periods. The nitrogen fertilization promotes positive changes in tillering dynamics of massai grass, allowing the use of up to 800 kg ha-1 year-1 for maintaining the pasture stability. The tillering demography of the forage had varied little between assessment periods.
Palavras-Chave: | Capim massai; Ecofiosiologia vegetal; Massa de forragem; Massai grass; Panicum infestum; Perfilhamento; Plant developmental stages; Tiller survival rate; Tillering stability index.
Thesagro: | Consorciação de cultura; Gramínea forrageira; Ovino; Panicum Maximum; Pastejo.
Thesaurus Nal: | Nitrogen fertilizers; Sheep.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/150847/1/CNPC-2016-Tillering.pdf
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (32250-1) - UPC - AP - PP -  -  -  - DIS