<b>Influence of nitrogen and phosphorus fertilization on the yield and regrowth characteristic of Marandu grass (Brachiaria brizantha c Stapf cv. Marandu)</b> - DOI: 10.4025/actascianimsci.v26i3.1836

Abstract

The objective of this work was to evaluate the effect of nitrogen and phosphorus fertilization on the regrowth, tiller density, tiller weight, dry matter yield (DMY) and green leaf blade dry matter (LBDM), under levels of nitrogen (0; 200; 400; 600kg/ha of N) and phosphorus (0; 50; 100; 150; 200Kg/ha of P2O5) of Marandu grass (Brachiaria brizantha (Hochst) Stapf cv. Marandu), during the summer (SP) and winter periods (WP). The experimental design was randomized blocks using factorial design 4 x 5, with three replications. Nitrogen fertilization produced (p < 0.05) a linear increase in the SP and a quadratic response in the WP. The DMY and leaves dry matter yield (LBDM) had a quadratic response and a linear increase in the WP, by crescent levels of nitrogen fertilization (p < 0.05). However, tiller density showed a linear decrease, by phosphorus (p < 0.05) at RP, and a quadratic response at WP. The weight of tiller and root was not statistically different (p > 0.05) by crescent levels of nitrogen and phosphorus fertilization in both periods. Results showed that nitrogen fertilization in pasture of Marandu grass increase DMY and LBDM, during the SP, and phosphorus fertilization did not affect the analyzed variables.