Greenhouse crops afford higher quality and competitiveness. The objective of this work was to evaluate the effect of nitrogen doses (80, 110, 140 and 170 kg ha-1) applied through fertigation in the yield of two cultivars of Cucurbita pepo (Anita F1 and Novita Plus), in a 4 × 2 factorial design. The experiment was carried out in an entirely randomized design with eight replications. The study evaluated the sum of the fresh biomass of fruits per plant, number of fruits per plant and mean fruit biomass. Analysis of the collected data made it possible to assume that increasing doses of N led to a linear yield increase for cultivar Anita F1 and a quadratic increase for cultivar Novita Plus.
Key words: Cucurbita pepo, nitrogen, drip fertigation, vegetables.
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