The study was conducted in the May-September 2012 at the Universidade Federal da Grande Dourados, with the main to evaluate the productivity, morphological and productive components of canola (Hybrid Hyola 61) crop under different levels of nitrogen (topdressing) and irrigation. The experimental design was randomized blocks in a split-plot with four replications. The plots were irrigated and no irrigated. The subplots were three treatments with nitrogen (topdressing) doses of 30, 60 and 90 kg ha-1. With the use of irrigation crop attained better results in plant height, shoot dry mass and number of siliqua per plants. The oil content and thousand grain weights showed significant increases as a function of irrigation and nitrogen doses. The yield under irrigation was higher than non-irrigated, with values equal to 3145.65 and 1354.45 kg ha-1, respectively.
Brassica napus L.; morphological components; depth of irrigation
