Morphological and yield responses of 'BRS Vitória' grapevines subjected to bio-fertigation with aquaculture wastewater

Abstract The objective of this work was to evaluate the agronomic responses 'BRS Vitória' grapevines under bio-fertigation with and without conventional soil fertilizer. A completely randomized design used, three treatments 18 replicates. were: CFI, fertilizer irrigation; BF+CF, fertilizer; BF, only bio-fertigation. following variables were evaluated: graft rootstock diameters; plant growth; number lateral buds; root, leaf, petiole, gem starch contents; bunch per plant, length, circumference, fresh weight; berry bunch, diameter, weight, soluble solid contents, titratable acidity, pH; yield; leaf macro- micronutrient contents. From 100 150 days after transplanting (DAT), diameters similar, increasing from 250 300 DAT in CFI treatment. highest root content 7.19% BF at 37.35% BF+CF DAT. plants showed best results for resulting a fruit yield 22% higher than that obtained other treatments. 'BRS-Vitória' show satisfactory performance when bio-fertigated.