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The fertirrigation has been incorporated to production systems of various fruit trees in Brazil, resulting in greater demand for knowledge of this technology in relation to its effect on the dynamics of solutes in the soil. Given this context, this study aimed to evaluate the effects of the use of fertiliser urea and potassium chloride through irrigation water on the issue of water by issuers and on soil chemical attributes (pH and electrical conductivity) in papaya crop for drip irrigation. The evaluations were conducted within an experiment outlined in randomized blocks, where the treatments consisted of five doses of N and five doses of K2O, totaling 10 treatments. Were installed in a solution in the soil to the horizontal distances of 0.03 m, 0.20 m, 0.40 m and 0.60 m from the dripper, the depths of 0.20 m, 0.40 m, 0.60 m and 0.80 m near the plant, in order to simulate a two-dimensional plane. The results showed that the use of urea and potassium chloride had no effect of clogging in the issuers in the period studied, nor had the effect of reducing the soil pH or changes in the level of salinity. The range of potassium applied via water drip irrigation by source of potassium chloride was 0.40 m in the horizontal distance from the dripper and in depth and the region of the volume wet with greater variation in the concentration of potassium occurred between the dripper and the plant.

EFEITO DA APLICAÇÃO DE UREIA E DE CLORETO DE POTÁSSIO POR FERTIRRIGAÇÃO NA VAZÃO DOS EMISSORES E EM PARÂMETROS QUÍMICOS DO SOLO