The experiment was carried out in Coronel Ezequiel county, Rio Grande do Norte, Brazil, in order to evaluate the effects of limestone and chloride potassium in production components of yellow passion fruit plants and soil salinity, caused by irrigation with saline water of 3.6 dS m -1 during the dry season, and salt leaching of the soil promoted by waters of the rainy season. Treatments were arranged in randomized blocks using factorial design of 3 × 2, referring to three levels of limestone, 1.4, 2.5 and 3.6 t ha -1 and two potassium levels, 80 and 160 kg ha -1 in potassium chloride form. According to present results, irrigation with saline water (3.6 dS m -1 ), in comparison with data from the literature about plants irrigated with nonsaline water, did no compromise the productive capacity of yellow passion fruit. Among the treatments, the combination of 80 kg ha -1 of K2O with 3.6 t ha -1 of limestone provided the fruits production with more mean mass, yield per plant and crop yield. Although the high salinity of the irrigation water increases the soil saline character on root environment of the plants during the dry season, the rainy season waters and the soil physical conditions provide the salt leaching and allow the use of water with saline restrictions in agriculture.