Acúmulo e composição morfológica do pasto de capim-Tanzânia adubado com nitrogênio ou consorciado com estilosantes campo grande

Abstract

The objective was to evaluate the accumulation of forage yield, composition and morphology ofTanzania grass pastures (Panicum maximum Jacq. cv. Tanzania-1) fertilized with nitrogen or intercropped with CampoGrande Stylosanthes. Were used a randomized blocks with split plots with three replications and having treatments asmain plots: Stylosanthes + Tanzania; Tanzania + 75 kg N ha-1; Tanzania + 150 kg N ha-1; Tanzania + 225 kg N ha-1 andthe subplots seasons. The highest percentage of green leaf blade were observed in spring and the pastures with 150 and225 kg N/ha. The percentage of green stem + sheath were higher in summer and autumn, as well as in pastures fertilizedwith N. The percentage of dead material was higher in autumn and winter. With the application of 225 kg N/ha, pastureshad higher daily accumulation of dry matter in relation to other treatments. The circumference of the stools was similarbetween the consortium and pastures fertilized with N. The number of live tillers was higher when we used higher doses ofnitrogen. Pastures intercropped with stylosanthes or nitrogen fertilized (75 and 150 kg) presents better morphology and daily accumulation of forage.