A trial was carried out with young rape plants (Brassica napus L.) CV.CTC-I, grown on sand culture, receiving nutrient solutions lacking the following nutrients at the time: N, P, K, Ca, Mg, S and B. Clear cut symptoms were obtained for the elements. The leave analysis shaw for normal and deficiente leaves N%. 2.04 - 0.70; P% - 0.40 - 0.10; K% 1.17 - 0.10; Ca% 1.20 - 0.13; Mg% - 0.70 - 0.11; S% 0.49 - 0.42 - B ppm71 - 18.