PRODUCTION AND POSTHARVEST QUALITY OF IRRIGATED PASSION FRUIT AFTER N-K FERTILIZATION

Daniel Gonçalves Dias,Victor Martins Maia,Ananias Costa Medeiros,Rodinei Facco Pegoraro

doi:10.1590/0100-29452017553

Daniel Gonçalves Dias, Victor Martins Maia + Show 2 more

Open Access

https://doi.org/10.1590/0100-29452017553

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Abstract

ABSTRACT Studies with nitrogen and potassium in yellow passion fruit cultivars with high yield potential are scarce in semiarid regions. The aim of this study was to evaluate the influence the N and K doses on productivity and fruit quality of different passion fruit cultivars in irrigated conditions in the northern of Minas Gerais state. The study was installed at experimental farm located in Janaúba-MG. This area was located at 15º 47’ S and 43º 18’ W, 516 m above sea level. The experiment was in completely randomized block with four replications, arranged in 4 x 6 factorial design consisting of four Passion Fruit cultivars (BRS Sol do Cerrado, BRS Ouro Vermelho, BRS Gigante Amarelo, IAC 275) and six N and K doses, which corresponded to 0-0, 50-125, 100-250, 150-375, 200 -500 and 250-625 kg ha-1 yr-1 of N and K2O, respectively. BRS Gigante Amarelo and BRS Sol do Cerrado cultivars showed higher productivity. Total fruit yield and average fruit weight were higher for BRS Sol do Cerrado and IAC 275, BRS Gigante Amarelo and BRS Ouro Vermelho cultivars, respectively. IAC 275 showed the highest pulp yield and along with BRS Sol do Cerrado, showed the higher soluble solids/titratable acidity ratio. BRS Sol do Cerrado, BRS Gigante Amarelo and IAC 275 cultivars showed higher pulp productivity, indicating that they are more promising for passion fruit juice industry.

Highlights

Brazil has 57,183 hectares destined to passion fruit cultivation, producing 823,284 tons of fruit and 14.5 t ha-1 of average yield (IBGE, 2014)
The northern of Minas Gerais (Brazil) stands out for the edaphoclimatic characteristics that favor the cultivation of the passion fruit, obtaining average yields higher than national ones
Main factors responsible for the low passion fruit yield are linked to use of cultivars that are unsuitable to soil and climatic conditions in planting areas (KRAUSE et al, 2012a), inadequate control of pests and diseases (AGUIAR et al, 2010) and fertilization with unbalanced doses and proportions (MENDONÇA et al, 2006)

Summary

Introduction

Brazil has 57,183 hectares destined to passion fruit cultivation, producing 823,284 tons of fruit and 14.5 t ha-1 of average yield (IBGE, 2014). The northern of Minas Gerais (Brazil) stands out for the edaphoclimatic characteristics that favor the cultivation of the passion fruit, obtaining average yields higher than national ones. Average yield obtained in 2014 in Janauba, located in northern of Minas Gerais, was 32 t ha-1 (IBGE, 2014). According to Carvalho et al (2000), the average Brazilian yield is still considered low, since the crop productive potential can reach 40 to 50 t ha-1, with appropriate use of irrigation and balanced fertilization. Main factors responsible for the low passion fruit yield are linked to use of cultivars that are unsuitable to soil and climatic conditions in planting areas (KRAUSE et al, 2012a), inadequate control of pests and diseases (AGUIAR et al, 2010) and fertilization with unbalanced doses and proportions (MENDONÇA et al, 2006)

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