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- Title
Doses de fósforo e nitrogênio na produção de Brachiaria hibrida cv. Mulato II.
- Authors
Olivastro Teixeira, Soraia; Olivastro Teixeira, Rudi; Bezerra dos Santos, Vanessa; Camillo de Carvalho, Marco Antonio; Mitsuo Yamashita, Oscar
- Abstract
The nutritional deficiency of Brazilian soils is one of the main factors limiting the production of fodder, and nitrogen and phosphorus are the nutrients which influence biomass production the most. The objective was to evaluate the vegetative growth of Brachiaria hibrida cv. Mulato II under different phosphorus levels with and without nitrogen, in northern Mato Grosso. The experimental design was in completely randomized block in a factorial 5 x 2 x 3 with three replications. The treatments consisted of application of five phosphorus doses (0, 45, 90, 135, and 180 kg ha-1 P2 O5), presence and absence of nitrogen (0 and 100 kg ha-1 of N), and three cuts with 30-day intervals. Shoot cuts were performed at a height of 20 cm from the ground to determine leaf, stem, and total dry mass. For leaf dry mass production, there were significant differences for phosphorus levels in isolation and interaction of nitrogen and cuts. For total dry mass, there were significant differences for the double interactions of nitrogen and cuts, phosphorus and nitrogen, and phosphorus and cuts. As for the stem dry mass production, there was a significant triple interaction for levels of phosphorus, nitrogen, and cuts. The leaf, stem, and total dry mass productions responded positively to the application of 180 kg ha-1 phosphorus in the presence of nitrogen.
- Publication
Revista Ceres, 2018, Vol 65, Issue 1, p28
- ISSN
0034-737X
- Publication type
Article
- DOI
10.1590/0034-737X201865010005