Data/hora: 11/06/2024 02:44:45

Provedor de dados: | 2
País: | Brazil
Título: | Morphogenesis and structure of Tifton 85 cultivated in subtropical climate and fertilized with nitrogen
Autores: | Tiecher, Diego Daniel; Rocha, Marta Gomes da; Pötter, Luciana; Salvador, Paulo Roberto; Bergoli, Tuani Lopes; Milanesi, Gabriela Descovi.
Data: | 2016-11-07
Ano: | 2016
Palavras-chave: | Zootecnia; Medicina Veterinária; Agronomia Cynodon spp.; Phyllochron; Marked tillers; Urea.
Resumo: | The experiment evaluated the morphogenesis and structure of Tifton 85 (Cynodon spp.) cultivated in subtropical climate and fertilized with nitrogen (N). The experiment was a completely randomized design with four levels of N (Zero; 75; 150 or 225 kg ha-1) in nine replicates per area. The experimental animals were Suffolk female lambs. The grazing method was continuous to maintain the sward height at 15 cm ± 10%. The stem expansion increased by 0.000027 cm degree-days-1 to each kg N applied (linear model). According to nonlinear model, the highest stem expansion (0.0226 cm degree-days-1) was observed with the use 220.1 kg ha-1 N. The leaf lifespan fitted a linear regression model, with increase of 50 degree-days leaf -1, comparing the levels zero and 225 kg ha-1 of N. According to nonlinear regression model, the longest leaf lifespan (407.1 degree-days) was observed with the use 208.8 kg ha-1 N. With the maintenance of sward height at approximately 15 cm, we recommended to use 200 kg ha-1 N in Tifton 85 cultivated in subtropical climate.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32147

10.4025/actascianimsci.v38i4.32147

Editor: | Editora da Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32147/pdf
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 38, n. 4 (2016); 389-393

Acta Scientiarum. Animal Sciences; v. 38, n. 4 (2016); 389-393

1807-8672

1806-2636

Fonte: | Direitos autorais 2016 Acta Scientiarum. Animal Sciences