Abstract
The objective this work was to evaluate specific economic data of the production of yellow passion fruit under influence of different doses of NPK, in the form of N, P2O5 and K2O, in an area with incidence of virose in the city of Presidente Prudente, State of São Paulo. The following doses of NPK were evaluated: N (150 to 1200 kg ha-1), P2O5 (200 to 1600 kg ha-1) and K2O (100 to 700 kg ha-1). Miyake et al. (2016) describe the methodology used in the formation of seedlings, fertilization and cultural treatments of passion fruit. The data used in the economic analysis were: productivity, commercial production, percentage and fruits of each commercial classification, cost of production and profitability of passion fruit. At the economical part, structures of the COE and TOC and four indicators of profitability were used. It was observed percentage difference in the operational cost of production of 4.0% between the highest and the lowest dose of N, of 5.8% among doses of P2O5 and 1.7% among doses of K2O. The total operating cost ranged from $29,119.77 to $31,113.09 per hectare. The profitability indicators were not favorable. It was concluded that the region of Presidente Prudente-SP, in areas with an incidence of viral infection, it is not recommended the plantation of passion fruits. However, at times with high selling price of fruit (average above R$ 1.95 kg-1), the dose of NPK indicated refers to 300 kg of N, 400 kg of P2O5 and 500 kg of K2O ha-1.
Highlights
The Brazil is the main producer of passion fruit worldwide, being the fruit cultivated and marketed throughout the country (AGRINUAL, 2017)
100% of the plants showed visual symptoms characteristic of attack of viral infection of passion fruit after 120 days of installation of the experiment, which highlights the severity of the disease in the field
The maximum productivity reached was 19.84 tons ha-1 of yellow passion fruit with the application of 300 kg N ha-1, being that the use of this dose about 83% of the fruits were within the commercial standard of sale (> size 2), which represented a yield of commercial fruits of 16.36 tons ha-1, even the variable being below the productive potential of culture regarding the areas without incidence of viral infections, it was superior to the average national production of 14 tons ha-1
Summary
The Brazil is the main producer of passion fruit worldwide, being the fruit cultivated and marketed throughout the country (AGRINUAL, 2017). There has been an increasing occurrence of pathogens in the areas of agricultural production destined to the cultivation of passion fruits. Viruses, the mosaic viruses of the fruits stands due to the severity that they cause to the culture, generating economical and social stalemates (Fischer et al, 2008; Ferreira, 2016). It is highlighted, that there is no chemical method to control this disease. The quantities of N, P and K recommended for the cultivation of passion fruit are very variable. Nutritional studies in areas with presence of virus are scarce, even more restricted when measuring the results of fertilization and production from the economic point of view
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