Palhada de aveia preta e desempenho de arroz irrigado em sucessão

Abstract

Black oat cultivation in irrigated rice areas is an alternative for animal feeding, soil cover in the fallow season, providing mass for direct sowing of rice, reducing water erosion and weed infestation. The objective of this work was to evaluate the influence of black oats and soil straw levels on the performance of flooded rice. The experimental design was in randomized blocks, with five treatments and four replications with 7.5 m² plots. The treatments were five dry mass quantities of black oat straw (0, 2, 4, 6 end 8 t ha-¹) at the soil surface. IRGA 424 IR irrigated rice cultivar was used and the dry mass of the aerial part, mass of 1000 grains, grain yield, yield of ingenuity and nitrogen in the polished grain were determined. Only grain yield of irrigated rice was altered and linearly increased up to 8 t ha-¹ of black oat straw at the soil surface.