Doses de enxofre e de nitrogênio em cobertura nos componentes de produção da canola

Abstract

The fertilizing with nitrogen and sulfur is a reality in the canola crop (Brassica napus L.), due to its already found benefits. The objective was to evaluate the relationship between the use of different doses of elemental sulfur associated with different doses of nitrogen to obtain responses of the components canola yield. The research was Universidade Federal da Grande Dourados, whose experimental delineation was in randomized blocks with treatments arranged in factorial 5 x 4 consisting of 5 rates of elemental sulfur that has 99, 5% of S (0; 30; 60; 90; 120 kg ha-1) and 4 nitrogen rates (0; 60; 120 and 180 kg of N ha-1).Thus, it were realized the following evaluation: grain yield, plant height, the plant branch level, the rates of grain protein and oil, nitrogen leaf level, uptake sulfur in the grain, dry weight and number of siliques per plant didn’t show significant effect with nitrogen and sulfur fertilization. There were significant results, leaf sulfur had a higher content of 120 kg ha-1 of nitrogen, while the highest amount of dry weight was obtained with 120 kg ha-1 of Sulfur, already the highest number of siliques per plant was with 120 and 180 kg ha-1 of nitrogen and 120 kg ha-1 of sulfur.