Doses de nitrogênio no trigo em sucessão ao nabo forrageiro

Abstract

Wheat production does not depend solely on Nitrogen, cultivars that have higher nutritional quality in grains also lack slightly larger amounts of other nutrients that are interconnected to quality and productivity components. However, adequate amounts and sources of nitrogen are essential to increase wheat productivity and quality, promoting maximum productive potential. In this sense, the objective of this work was to evaluate different doses of nitrogen in the wheat crop, aiming at a maximum yield and a better financial return, when I implant forage radish as a predecessor crop to wheat. The experiment was carried out in 2022, at Lª Marques de Abrantes, in the interior of the city of Ubiretama - RS, in Red Latosol, with a completely randomized design with 4 x 5 m plots, with 5 treatments and 4 replications. The treatments were the different doses of nitrogen, with doses of 0, 30, 60, 90 and 120 kg ha-1 applied in coverage on wheat. Applications were made only once, during wheat tillering, in phase V3 to V4. Plant height, ear length, number of ears/m², number of grains/ear, yield, thousand seed weight and PH were evaluated. The application of 90 kg ha-1 of nitrogen provided a higher number of grains per spike, thousand grain weight and PH, resulting in higher wheat grain yield. The dose 60 kg ha-1 of nitrogen, greater economic viability.