Produção e composição bromatológica de pastagem de azevém sobressemeado em Cynodon nlemfuensis cv. Porto Rico, com uso de leguminosas e adubação nitrogenada

Abstract

The objective of this study is to evaluate the production, participation of species and quality of four systems ryegrass over seeding pasture in cynodon nlemfuensis cv. Porto rico, with the use of legumes and nitrogen fertilization. The treatments were ryegrass seeding over on stargrass, ryegrass seeding over star-grass with 60 kg of nitrogen and vetch, ryegrass seeding over star-grass with 60 kg of nitrogen and ryegrass seeding over star-grass with 60 kg of nitrogen and white clover. The study was conducted at Universidade Tecnológica Federal do Paraná, Campus Dois Vizinhos, between April 15 and October 14, were held four grazing, and evaluated the forage mass (FM), daily accumulation rate (DAR), participation of species, chemical composition and dry matter content (% DM) of pastures. The experimental design was completely randomized with four treatments and three replicates (paddocks). There were differences (P <0.05) among treatments for FM, DAR, participation of ryegrass, crude protein (CP) and % DM. The mean values of CP, neutral detergent fiber, acid detergent fiber, hemicelulose, mineral matter and organic matter were 18.76, 62.21, 31.83, 30.38, 8.07, 91.93%, respectively. Nitrogen fertilization increased forage mass production and crude protein.