PRODUÇÃO E BROMATOLOGIA DE ESPÉCIES FORRAGEIRAS PERENES ESTIVAIS, COLHIDAS EM DIFERENTES ESTRATOS

• Autor(a) principal: Poczynek, Mailson
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações do UNICENTRO
• Texto Completo: http://localhost:8080/tede/handle/tede/181
• topic: Produtividade; composição química; estrutura vertical; Productivity; chemical composition; vertical structure; CIENCIAS AGRARIAS::AGRONOMIA

Aimed to evaluate biomass production, accumulation rate of dry matter, plant height, leaf area index and estimated, from seven different forage species in cutting times, and the biomass dry weight, percentage of forage mass, leaf / as dry matter, crude protein, neutral detergent fiber, acid detergent fiber and lignin in lower strata and upper pasture. The forages were evaluated in successive cuts made when they reached the level of 95% light interception. The experimental design was a completely randomized design in factorial, with split plot over time. Tifton 68 Forages, Jiggs and Tifton 85 produced more total dry matter, exceeding 20 Mg of dry biomass per ha?¹. There was biomass yield variability as evaluation time for all forages, the Hemarthria altissima cv. Roxinha had the lowest dry biomass production values per ha?¹, 13 t, accumulation of daily dry matter, crude protein and lower values in the two strata. The cultivar Tifton 85 showed higher leaf /stem ratio in the two strata and also a higher percentage protein in them, and shorter interval between cuts in the ratings. The lower stratum showed a lower percentage of herbage mass when compared to higher, the stargrass and Tifton 68 have a higher canopy height and focus greater herbage mass in the upper stratum. The upper stratum of the pasture has better chemical composition when compared to the lower strata. The cycle characteristics, productivity, improved stability and dynamics of production and leaf / stem ratio, indicate the Tifton 85 as forage that best meets the requisites for forage production in this study.