Irrigation and Swine Slurry Application of Tifton 85 Grass: Production and Nutritional Quality

Abstract

ABSTRACT:The use of irrigation and fertilization with swine wastewater (SW) can be an excellent alternative to increase the production and pasture quality. The work was carried out from October 2013 to September 2014 in Dourados -MS, and aimed to evaluate the production and nutritional quality of Tifton 85 grass (Cynodon spp.) under different rates of SW, in the presence and absence of irrigation. The experiment design was randomized blocks in a split plot scheme, with irrigation and without irrigation in the plots, and four rates of SS in the subplots: 75, 150, 225 and 300 m 3 ha -1 cut -1 , with four replications. There was a significant effect of irrigation and SS rates on Total dry matter, reaching 41.4 Mg ha -1 y -1 with the highest dose tested and associated with the use of irrigation. Irrigation also provided higher levels of crude protein, increasing with linear adjustment to SS rates, reaching 17.9 % in the annual average.The neutral detergent fiber and the acid detergent fiber presented lower irrigation results and decreased linearly at the rates of SS, reaching 65.40 and 32.55% in the annual average, respectively. It was observed an inverse behavior of the "in vitro" digestibility of dry matter, which was higher under irrigation, reaching 69.5% in the annual average and presenting linear growth for the SS rates.KEYWORDS: organic fertilization, botanical composition, dry matter production, forage quality, sprinkler irrigation. APLICAÇÃO DE DEJETO LÍQUIDO DE SUÍNO E IRRIGAÇÃO DE CAPIM

Características produtivas de capins tropicais com e sem irrigação

“…A ausência de efeito da irrigação sobre a RFC no capim Tifton 85 é corroborada por outros autores (GOMES et al, 2015;SANCHES et al, 2016;SANCHES et al, 2017c;SILVA et al, 2018). (RODRIGUES et al, 2023) No entanto, as RFC encontradas (em torno de 2,2) são maiores que destes autores, iguais a 1,95 e 1,3, respectivamente.…”