LIMING EFFECTS ON THE NUTRITION AND DRY MATTER YIELD OF TIFTON 85 GRASS

• Autor(a) principal: Prado, Renato de Mello
• Data de Publicação: 2009
• Outros Autores: Barion, Rafael Damando
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Tropical (Online)
• Texto Completo: https://revistas.ufg.br/pat/article/view/4680
• topic: Cynodon ssp.; grass; oxisol; soil base saturation; soil acidity; Cynodon ssp.; forrageira; fertilidade do solo; nutrição de plantas; saturação de bases do solo

Soil acidity is the most limiting factor to the productivity of crops and, in the livestock context, the non-correction implies in a low animal performance. The objective of this study was the evaluation of the effects of liming in nutrition, growth, and production of Tifton 85 grass. The experiment was conducted in a greenhouse, in pots filled with 3 dm3 of samples of an oxisol. The experimental design was completely randomized, with five treatments and four replications: zero (control), half (0.77 g dm-3), once (1.55 g dm-3), one and a half times (2.32 g dm-3), and twice the dose of reference for this crop (3.10 g dm-3). The reference dose was calculated to increase the soil base saturation to 70%. It was observed that liming promoted significant effects on the growth of grass, in the second and third cuts, and that the maximum production of dry matter occurred with a soil base saturation of 67%. These results demonstrate the need of soil acidity correction for the development and production of grass. KEY-WORDS: Cynodon ssp.; grass; oxisol; soil base saturation; soil acidity.