The majority of soils grown with passion fruit plants in Sergipe State present low natural fertility and this has caused reduced productivity of this plant. Thus, the aim of this work was to evaluate the combination of organic fertilization sources from poultry and sheep manure, with potassium doses on yield and quality of yellow passion fruits. This experiment was carried out in the Research Station of the Universidade Federal de Sergipe. The experiment design was in a 2x5 randomized blocks (organic fertilizer x potassium doses) +1 factorial scheme. The treatments were constituted by 2 sources of organic fertilizers (T1=10 L of poultry manure and T2 = 20 L of sheep manure) and five potassium doses (0, 27, 54, 81 e 108 g plants-1) and an additional treatment (2.5 L of poultry manure + 7.5 L of sheep manure). The variables studied were: total soluble solid concentration (SST), total acidity by titration (ATT), cortex thickness (ESPC) (mm), number of fruit per plant (NFPLM) and yield (REND) (t ha-1), in the first year. Yellow passion fruits presents adequate attributes for consumption in natura and for the industry, when fertilized with poultry and sheep manure combined with potassium doses, promoting SST between 10.8 and 14.02%, ATT of 8.48 to 7.57 g 100 mL-1 of juice, ESPC between 6.52 and 7.12 mm, REND between 27.5 and 30.24 t ha-1 and NFPLM of 28 to 29 fruits, respectively.
Passiflora edulis Sims f. flavicarpa Deg; mineral nutrition; organic fertilization
