The monitoring of plants growth constitutes an important activity during the crops formation, including the yellow passion fruit. In this direction, an experiment was carried out in Remigio, Paraiba State, Brazil, to evaluate the effects of saline water irrigation, bovine biofertilizer and potassium on yellow passion fruit growth plants and soil salinity. Treatments were arranged in randomized block with three replications and 12 plants per plot, using factorial design 2 x 2 x 2, relative electrical conductivity of irrigation water of 0.35 to 4.00 dS m-1, in soil with and without biofertilizer and potassium chloride (KCl) conventional and coated with polymers. The variables studied were electrical conductivity of the soil at depths of 0-20 and 21-40 cm, plant height at 30 days after transplanting (DAT), period of the seedlings transplanting to pruning of the main haste and lateral branches, number of productive branches and stem diameter at 30, 90, 150, 210 and 270 DAT. The interaction between water salinity, biofertilizer and potassium increased the soil salinity. The biofertilizer and the slow release of KCl increased the plant growth in height, anticipating the main stem pruning and productive side branches, productive branches number and stem diameter of the plants.
Key words: Passiflora edulis, electrical conductivity, organic input.
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