Abstract
The objective of this work was to evaluate the growth, production and quality of four tomato cultivars submitted to nitrogen fertilization and potassium fertilization through fertigation in the drip irrigation system during their development. The experiment was installed in the experimental area of UFRPE/UAG, in the municipality of Garanhuns/PE. The experimental design was a randomized block (DBC), with four treatments that corresponded to the cultivars (C1 - tomato Cris, C2 - tomato Gaucho Melhorado, C3 - tomato Santa Adelha and C4 - tomato Caline IPA 06), and with four replications. The experiment was carried out in plots with three plant rows, spaced 1 m apart, spacing between plants of 0.33 m and between 1.2 m plots. Using the drip irrigation system and the application of nitrogen and potassium fertilization was through fertirrigation through Ventury's injected. The following characteristics were evaluated at 12, 24, 36, 48, 60, 72, 84, 96, 108 and 120 days after transplanting (DAT): plant height (AP) and stem diameter (DC) Plant (NFr) and fruit weight RPF). It was observed a significant difference between the cultivars evaluated in relation to the mean values of DC, NFr and PFr when NK fertilization was applied via fertigation, except for AP. The cultivar Caline IPA 06 (C4) presented the best results for all measured growth and yield characteristics. A good correlation between measured characteristics (AP, DC, PFr and NFr) was observed throughout the development cycle of the culture.
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