Adubação nitrogenada adicional no início do espigamento de trigo duplo propósito

Abstract

Yield and grain quality of dual purpose wheat cultivars may fluctuate due to the management, generating lower results than expected. It is sought to know if the application of additional dose of nitrogen, at the beginning of the gleaning, increases the yield of grains and modifies the technological quality in double purpose wheat, regardless of the cuts on vegetable. The experiment was conducted at the Embrapa Trigo experimental field, in Coxilha, RS, Brazil, in 2017. Two dual-purpose wheat cultivars (BRS Tarumã and BRS Pastoreio) were used, three cutting regimes (no cut, one and two cuts). whether or not the application of additional nitrogen fertilization at the beginning of the pebble. The experiment was carried out in a three -phase arrangement, with a randomized block design, in three replications. The data were submitted to analysis of variance and, compared to the Tukey test at 5% of probability. For grain yield, plant height at harvest, mass of one thousand grains, yield (kg.ha-1), number of spikelets / spike, final stand were evaluated, and the weight of the hectoliter, fall number, extraction experimental flour, protein in grain, gluten (strength and gluten index, wet and dry gluten). There was interaction for plant height and grain yield and other quality attributes. In the comparative of the cultivars they presented differences for yield of the grains, whereas the additional nitrogen application was similar in this attribute. For technological quality the genotypes acted differently regarding the regimes of cuts and nitrogen fertilization.