Resumo

ESCALANTE-ESTRADA, José Alberto Salvador; RODRIGUEZ-GONZALEZ, María Teresa  e  ESCALANTE-ESTRADA, Yolanda Isabel. Yield, water use efficiency in canola based on nitrogen and distance between rows. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.6, pp.1249-1259. ISSN 2007-0934.

Canola (Brassica napus L.) produces edible oil that helps prevent heart disease and rheumatoid arthritis. Thus, the research topics on this crop are justified, especially in the search for strategies to increase water productivity. The aim of the study was to determine in canola genotypes, the effect of the distance between rows and nitrogen fertilization on: water use efficiency (EUA), biomass (BT), harvest index (IC), yield grain (RG) and oil (RA). Treatments consisted of planting on June 20, 2011, Canada I, Canada II and Westar genotypes, with supply of 0 and 100 kg of nitrogen (N) and distance between rows (DH) of 0.40 m (DC) and 0.80 m (DA) which generated a density of 25 and 12.5 plants m-2. The experimental design was randomized blocks in split plots and four replications. Canada II genotype had EUA, BT, RG and RA higher than Westar and Canada I. This trend was observed with application of N and DC planting. While Canada II genotype in DC plantings with N, had EUA, BT, RG and RA higher. The grain oil content was not affected by treatments. These results indicate that by reducing the distance between rows and nitrogen fertilization can achieve increased water productivity and consequently greater production of canola.

Palavras-chave : Brassica napus; heat units; oil content; oil yield; phenology.

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