Technical and agronomic efficiency of nitrogen use on the yield and quality of oat grains

ABSTRACT The efficiency of nitrogen use by oats in association with climatic conditions is fundamental to the development more sustainable managements yield and quality. objectives this study were define agronomic ratio dose provided product obtained, estimate maximum technical nutrient on grain yield; for optimum dose, simulate expression straw industry yields, protein total fiber different agricultural year a soybean/oat system. was conducted from 2011 2016, Augusto Pestana, RS, Brazil, randomized block design four repetitions 4 x 2 factorial referring doses (0, 30, 60 120 kg ha-1) oat cultivars (Barbarasul Brisasul) Nitrogen increased grain, straw, yields protein, 7.8, 19.7 3.3 ha-1 0.10 g kg-1, respectively, reduction 0.05 kg-1 per N supplied. dependent weather during cultivation. In general, productivity obtained 86 N, linear equations showing yield, content grains use.