Data/hora: 07/06/2024 00:43:47

Provedor de dados: | 96
País: | Brazil
Título: | Nitrogen and potassium supply and the morphogenic and productive characteristics of marandu palisadegrass
Autores: | Megda,Marcio Mahmoud; Monteiro,Francisco Antonio.
Data: | 2010-08-01
Ano: | 2010
Palavras-chave: | Brachiaria brizantha; Leaf; Nutrient solution; Root; Shoot; Tiller.
Resumo: | The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part dry mass positively correlated with the number of tillers and leaves and grass leaf area. Nitrogen rates modulated the root system development, and the root specific length and surface decreased when high rates of nitrogen and potassium were supllied. Nitrogen and potassium influence Marandu palisadegrass morphogenic characteristics, which are determinant for grass dry matter production.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000800007
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982010000800007
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.39 n.8 2010
Fonte: | info:eu-repo/semantics/openAccess