Yield and Quality of Yellow Passion Fruits According to Organic Fertilization and Alternative Phytosanitary Management

Abstract

-Growing yellow passion fruit is a profitable activity, with a high demand for labor, and it is practiced especially by family-based farmers. However, the production cost is rather high and a significant part of this cost is associated with the expenses related to fertilization and phytosanitary treatments necessary for obtaining satisfactory yields and high commercial quality fruit. Therefore, the objective of this study was to evaluate the effect of using organic compound in fertilization of plants and alternative products in phytosanitary treatments (Bordeaux mixture, Neem oil and lime sulfur mixture) on the yield and quality of fruits. Yellow passion fruits were submitted to three types of fertilization (mineral, organic and organic-mineral) and two types of phytosanitary treatment ('conventional' and 'alternative'). This experiment evaluated fruit yield (kg/plant) and fruit quality by using the following evaluations: seedless pulp yield, soluble solids content (SS), titratable acidity (TA), SS/TA ratio and vitamin C content. The different types of fertilization did not interfere in fruit yield, however, plants under conventional phytosanitary treatment displayed higher yields. The SS content and TA of the fruits were influenced only by fertilization, where plants that received mineral and organic-mineral fertilization produced fruit with higher contents of SS and TA. Pulp yield, SS/TA ratio and vitamin C content were not influenced by any of the evaluated factors. Regarding cultivation of passion fruit, it is possible to substitute some mineral fertilizers for organic fertilizers with no negative effects on the fruit yield or quality. However, the substitution of pesticides for alternative products compromises fruit yield.Keywords: alternative products, mineral fertilization, organic-mineral fertilization, Passiflora edulis Sims f. flavicarpa Deg. PRODUÇÃO E QUALIDADE DE FRUTOS DE MARACUJAZEIRO AMARELO, EM FUNÇÃO DE ADUBAÇÃO ORGÂNICA E TRATAMENTO FITOSSANITÁRIO ALTERNATIVO

Fruit and Juice Metric Characteristics of Two Yellow Passion Fruit (Passiflora edulis Degener) Genotypes Grown in Southeastern Nigeria

“…yields, juice content and quality. However, the external and internal characteristics of passion fruit have been noted to be influenced by fertilization, among other factors (Pacheco et al, 2017). But the characteristics response of passion fruit to fertilization vary according to the species, amount and types of fertilizers utilized (Weston and Barth, 1997;Mattheis and Fellman, 1999;Aular et al, 2014).…”

Yield and Quality of Passion Fruit Under Organic Cultivation With Input Levels and Irrigation in the State of Acre

“…Nutrient supply and phytosanitary treatments are necessary to obtain satisfactory yields and high commercial quality fruit (PACHECO et al, 2017). However, in conventional cultivation, chemical fertilizers and pesticides represent major production costs (PACHECO et al, 2017).…”

“…Nutrient supply and phytosanitary treatments are necessary to obtain satisfactory yields and high commercial quality fruit (PACHECO et al, 2017). However, in conventional cultivation, chemical fertilizers and pesticides represent major production costs (PACHECO et al, 2017). The use of organic fertilizers not only contributes to improving the chemical properties of the soil but also its physical and biological properties, consequently reducing production costs (ARAÚJO NETO et al, 2014a).…”