The research was carried out in a greenhouse, at the UFRPE, from October 2000 to May, 2001. The objective was to evaluate the effect of phosphatic fertilization and harvest systems on the chemical composition and in vitro digestibility of the "capim-de-raiz" (Chloris orthonoton Doell). The treatments was obted in a factorial arrangement 3 x 2 x 2, with three rates of phosphorus fertilizer (0, 100 and 200 kg ha-1 of P2O5), two cut frequencies (30 and 40 days) and two cut intensities (5 and 15 cm) distributed in the design was a completely randomized with four replications. Plants without phosphorus fertilizer presented the highest CP concentration (102.3 g kg-1). The highest NDF values were obtained in the plants cut at 15 cm (750.3 g kg-1). The highest ADF concentration values were found in the plants cut at 30 days of regrowth (389.8 g kg-1). The phosphorus concentration in the plant tops was influenced by the phosphatic fertilization rates, cut frequencies and cut intensities. Plants without P fertilizer presented the highest in vitro dry matter digestibility.
cut frequencies; cut intensities; value nutritive; native grass
