YIELD, NITROGEN CONCENTRATION AND CRUDE PROTEIN OF WHEAT CV.BRS 394 IRRIGATED IN CERRADO UNDER NITROGEN AND SULFUR LEVELS

Resumo

The objective was to evaluate the interactions between nitrogen-sulfur nutrients in the productive and nutritional development of wheat cv. BRS 394. Conducted in the field in a dystrophic Red Latosol, the combinations of nitrogen rates (0, 70, 140, 210 and 280 kg ha^-1) and sulfur (0, 25, 50, 75 and 100 kg ha^-1) were evaluated. 1). With treatments in randomized blocks and four replications, the plots consisted of 9 rows of 6.0 m spaced at 0.20 m. Yield variables, Nitrogen (N) and Crude Protein (CP) concentrations in the grains were evaluated. The data were subjected to analysis of variance and the means analyzed by means of polynomial regression at 5% by the F test. In 2017, the maximum productivity (3934.49 kg ha-1) occurred with the isolated effect of N (214.48 kg ha^-1). In 2018, the maximum productivity (3888 kg ha^-1) occurred with the use of 216 and 63 kg ha^-1 of N and S, respectively. For nitrogen and crude protein concentration in grains in 2017 and 2018, the effects were isolated for nitrogen doses, respectively. Nitrogen fertilization and its combination with sulfur provide gains in productivity, nitrogen concentration and crude protein in BRS 394 wheat grains.