This work was carried out with the objective of evaluating the effect of the addition of industrial residue (calcium silicate) to the substrate in the production of the passion fruit seedlings, studying the benefits in the development, the production of dry matter and the nutritional state of the plants. The experimental design adapted was a randomized block with 5 treatments and 4 repetitions. The doses of calcium silicate applied were equivalent to raise in half; one; one and half; and twice the dose to elevate percentage of base saturation = 50%, corresponding to the 0; 0.45; 0.90; 1.35 and 1.80 g per pot, respectively, besides a control without application. The experimental unit was constituted of pots with 2 dm³ of a Red Latossol (Oxisol). After 80 days of the plantation, the height, stem diameter, number of leaves and the dry matter of the shoot and the root, as well as contents of macro and micronutrients were evaluated. The passion fruit seedlings responded to the calcium silicatie application. The maximum development was associated with the base saturation of 58% with the concentrations of Ca in the soil equivalent to19 mmol c dm-3 and the content of Ca in the shoot of 12.0 g kg-1.
liming; acidity; Passiflora edulis
