Abstract

Canola (Brassica napus L. var. oleifera) is an oilseed that belongs to the Brassicaceae family and has in its grains a content of 38% oil and 27% protein. The aim of this work was to evaluate the interference of different quantities of nitrogen fertilizer applied to the coverage of the Canola crop on direct and indirect components of the production of grains and oil. In that sense, an experiment with the Canola culture was implemented, in succession to the culture of soybean, with hybrid Hyola 61, under no-tillage system, in a soil classified as Eutrophic Red Latosol, located at 24°49’06” S and 53°16’44” W, in the experimental area of Andreis Agricultural Farm, in the municipality of Corbélia, Paraná State – Brazil. The experimental design used consisted of random blocks with 4 replications and 7 treatments, summing up to 28 plots, in an area of 882 m². For base fertilization, 28 kg ha^-1 of N, 50 kg ha^-1 of P₂O₅, and 50 kg ha^-1 of K₂O were applied. Treatments consisted of control_, 25 kg ha^-1 of N, 50 kg ha^-1 of N, 75 kg ha^-1 of N, 25 kg ha^-1 of N + 27 kg ha^-1 of S, 50 kg ha^-1 of N₂ + 54 kg ha^-1 of S and 0.45 L ha^-1 of N + 0.1 L ha^-1 of S (foliar fertilizer Micro Xisto HF), applied to the coverage 42 days after the emergence of Canola seedlings. No significant statistical differences were observed among treatments on production components, except for oil content.

Key words: Oil, fertilization, production, Brassica napus L. var. oleifera.