Productivity and nutritional value of elephant grass BRS Kurumi subjected to different proportions of defoliation

• Autor(a) principal: da Rosa, Patricia Pinto
• Data de Publicação: 2023
• Outros Autores: Ávila, Bianca Pio, Scheibler, Rudolf Brand, Kröning, Alexsandro Bahr, Sauthier, Janaína, Scheffler, Guilherme Henrique, Schafhauser Junior, Jorge, Ferreira, Otoniel Geter Lauz
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Pesquisa Agropecuária Gaúcha (Online)
• Texto Completo: http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/762
• topic: Tropical forage; Forage production; Tillering; Forrageira tropical; Produção de forragem; Perfilhamento

The objective of this paper was to evaluate productivity, nutritional value of forage and tillering of elephant grass cv. BRS Kurumi under different pre-defoliation and post-defoliation canopy heights (residual height). The experimental design consisted in a randomized complete block design, with four replications. Treatments corresponded to the factorial combination of two pre‐defoliation heights (60 and 80 cm) and three post-defoliation residue heights (10, 25 and 40 cm), combined in factorial design 2 x 3, being, respectively, 60 x 10 cm; 60 x 25 cm; 60 x 40 cm; 80 x 10 cm; 80 x 25 cm; 80 x 40 cm. Productive, bromatological, carbohydrate fractionation and in situ degradability characteristics were evaluated. Results indicated that if the objective is to seek short intervals between grazing, associated with higher forage quality, the 60 x 25, 60 x 40 and 80 x 40 managements are the most indicated ones. For maximum forage productivity, 80 x 10 and 80 x 25 are the most recommended ones. For tillering, a canopy height management of 80 cm is preferred, with 80 x 25 for aerial tillers and 80 x 40 for basal tillers.