2017-05-182017-05-182016-02-29OLIVEIRA, Joelma Kyone Silva de. Características quantitativas e qualitativas do capim-mombaça, submetido a doses crescentes de nitrogênio em clima tropical úmido – classificação AF. 2016. 75 f. Dissertação (Mestrado) - Universidade Federal do Pará, Núcleo de Ciências Agrárias e Desenvolvimento Rural, Empresa Brasileira de Pesquisa Agropecuária, Universidade Federal Rural da Amazônia, Belém, 2016. Programa de Pós-Graduação em Ciência Animal.https://repositorio.ufpa.br/handle/2011/8448The productive chain of ruminant in northern Brazil has its base sustained by forages being its management and fertilization, grasses perpetuity, extremely important for the high biological value protein final production for human intake. The study aimed to evaluate trades of Panicum maximum cv. Mombaça fertilized with increasing doses of nitrogen at Af weather conditions being this condition classified by frequent rainfall along every month of the year, so, showing no seasonality in rain scheme. There were evaluate productive trades, morphogenetic, structural and chemical of Mombaça grass in parcels. Being the experiment outlined in random blocks with six treatments (0, 10, 20, 30, 40 e 50 kg of N ha-1 aplication-1), each application performed after each cut and four repetitions, a repetition by block totalizing 24 plots and the cut done at a height of 40 cm, whenever the parcels high achieved 90 cm to be considered the time when the canopy intercepts 95% of incident light. The data were submitted to variance and regression analysis, with significance of 5% taken from the linear and quadratic coefficients of determination. Nitrogen fertilization affected (p<0,05) stretching rates, appearance, number of leaves alive by tillers and dry mass production. The forage quality was also affected by N doses (p<0,05), being the levels of CP positively affected and values of TC negatively. The fiber levels and lignin were not influenced by fertilization (p<0,05) being this result positive from the forage nutritional pint of view, once fiber and lignin high levels do not benefit consumption and cause a digestive limitation. The nitrogen provides better qualitative and quantitative results to Mombaça grass in tropical climate areas.Acesso AbertoPastagensCapim-mombaçaPanicum maximumFertilização nitrogenadaFracionamento de carboidratosMorfogêneseRuminantesForragemNitrogênioAdubos e fertilizantesAdubação nitrogenadaAmbiente tropicalDissertaçãoCNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::PASTAGEM E FORRAGICULTURA::FISIOLOGIA DE PLANTAS FORRAGEIRASCNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::PASTAGEM E FORRAGICULTURA::MANEJO E CONSERVACAO DE PASTAGENS