Data/hora: 11/06/2024 18:02:14

Provedor de dados: | 124
País: | Brazil
Título: | Growth and bromatological characteristics of Brachiaria decumbens and Brachiaria ruziziensis under shading and nitrogen
Autores: | Faria,Bruna Moscat; Morenz,Mirton José Frota; Paciullo,Domingos Sávio Campos; Lopes,Fernando César Ferraz; Gomide,Carlos Augusto de Miranda.
Data: | 2018-09-01
Ano: | 2018
Palavras-chave: | Crude protein; Fibrous fraction; Silvopastoral systems; Tillering; Tropical grasses; Urochloa.
Resumo: | ABSTRACT This study aimed to evaluate the productive and qualitative characteristics of Brachiaria decumbens and Brachiaria ruziziensis subjected to three levels of artificial shading (0, 36 and 54%) and four nitrogen (N) doses (0; 50; 100 and 150 mg dm-3 soil), using completely randomized design with a factorial scheme 2 x 3 x 4, with three replications. The dry matter production (DMP), the number of tillers per pot, root weight and crude protein (CP) and neutral detergent fiber (NDF) contents were evaluated. Both grasses responded quadractly to N, but B. ruziziensis presented greater production under the two highest N doses. The tillers density increased with N dose and was reduced under shading. The root weight increased with N dose, linearly in the full sun and quadractly in the shade. The shading and N showed a positive influence on CP contents. For NDF content, was observed reduction with increase of N dose. The NDF content of B. decumbens increased with shading levels; for B. ruziziensis, the greatest value was observed under intermediate shading level. The N fertilization is an important strategy to improve DMP, tillers density and CP content, for both grasses. However, intense shading should be avoided, as it reduces tillering and root weight, which may threat pasture persistence.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300529
Editor: | Universidade Federal do Ceará
Relação: | 10.5935/1806-6690.20180060
Formato: | text/html
Fonte: | Revista Ciência Agronômica  v.49 n.3 2018
Fonte: | info:eu-repo/semantics/openAccess