Parcelamento da adubação nitrogenada em cultivares de trigo na Região das Missões

Abstract

Wheat is one of the main grains sown during the winter, but its yield often makes it impossible to produce. Therefore, the use of agricultural resources should be optimized to generate greater profitability of this crop. To evaluate the effect of nitrogen fractionation, an experiment was conducted in a field on the property of Mr. José podgorski, in Santo Ângelo-RS, during the 2019/20 crop year. The experiment had a DIC (Informal Internal Design) design, using subdivided plots (culture) in an 8- crop bifactorial scheme (BRS Marcante, ORS 1403, ORS Mother Pearl, TBIO Audaz, TBIO Sinuelo, TBIO Sossego, TBIO Toruk .) and 5 types of application (80kg of N in the sowing line, 20kg of N in the sowing line and one application of 60kg of unaffiliated N, 20Kg of N in the sowing line and two 30Kg of N at affiliation and 30 Kg of N at stretching, only topdressing using 40 Kg of N at affiliation and 40 Kg of N at stretching and no nitrogen fertilization). Yield and morphological characters of the crop were taxed. After analysis, for interpretation of the results, the analysis of variance (ANOVA) was performed, followed by Tukey test, with a significance level of 5%, tests with the aid of sisvar software. The most productive nitrogen fertilizer package uses 20 kg of nitrogen in the base and two applications of 30 kg nitrogen in the roof with no difference in testing applications that use 20 kg of nitrogen in the base and one application of 60 kg of nitrogen in the roof and only two. 40 kg nitrogen applications in roofing. A more productive cultivar was TBIO Sinuelo, with no significant difference from TBIO Audaz, ORS Madre pearl and TBIO Sonic.