Tillering and structural characteristics of Mombaça grass fertilized with phosphate sources, under grazing - DOI: 10.4025/actascianimsci.v30i1.3593

• Autor(a) principal: Cecato, Ulysses
• Data de Publicação: 2008
• Outros Autores: Skrobot, Viviane Deczka, Fakir, Glauber Roberto, Branco, Antonio Ferriani, Galbeiro, Sandra, Gomes, José Augusto Nogueira
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Acta Scientiarum. Animal Sciences (Online)
• DOI: 10.4025/actascianimsci.v30i1.3593
• Texto Completo: https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3593
• topic: colmos; lâminas foliares; índice da área foliar; perfilhos; 5.04.04.00-8 Pastagem e Forragicultura

The experiment was conducted from December/2002 to April/2003, with the objective of evaluating the effects of different phosphate sources (Yoorin&reg; magnesium thermophosphate, Simple Superphosphate + Triple Superphosphate, Gafsa natural phosphate, and control – no phosphate application) as a function of the evaluation months, on leaf area index (LAI), tiller weight (P) and number, percentage of total leaf and stem (%) and leaf blade/stem ratio of Mombaça grass (Panicum maximum Jacq. cv. Mombaça). The experiment design was a randomized block, with three replications. Phosphate sources influenced (p < 0.05) the weight and number of tillers, while Yoorin&reg; had less weight per tiller, and the Gafsa phosphate obtained the lowest number of tillers. There was a period effect (p < 0.05) for all evaluated variables. The lowest LAI was observed in April, and the highest in February, showing adaptation to a new reproductive cycle. There was little phosphorous influence on tillering; however, soluble phosphate increased the weight of tillers, while the period increased leaf presence.