Abstract
This work aimed to analyze the economic feasibility of the irrigation system by dripping and nitrogen fertilization in jambu production. The experiment was conducted at the Experimental Farm of Igarapé-Açu, a site owned by UFRA, in protected cultivation, from May to July in 2016. The treatments consisted in four soil water tensions (12, 18, 24 and 30 kPa) and four nitrogen doses (0, 50, 100 and 150 kg ha-1). The economic analysis of the jambu irrigated production was sustained by the theory of producing costs considering both depreciation cost and alternative cost. The treatment with the highest profit was managed at 18 kPa with a nitrogen dose of 50 kg ha-1, with a profit of R$ 1,548.54 for an area of 1,000 m.². The drip irrigation and nitrogen fertilization were economically viable for the jambu crop.
Highlights
The experiment was conducted at the Experimental Farm of Igarapé-Açu, a site owned by UFRA, in protected cultivation, from May to July in 2016
The treatments consisted in four soil water tensions (12, 18, 24 and 30 kPa) and four nitrogen doses (0, 50, 100 and 150 kg ha-1)
After the analysis of variance and the turkey test (p
Summary
The culture of jambu extremely demands on water As it is a leafy vegetable, it requires a greater attention and care regarding its nutrition in order to obtain a competitive production on market (Gusmão & Gusmão, 2013). Any agricultural enterprise requires a cost analysis of the implementation of technologies in the production systems in order to evaluate their economic viability. According to Filgueira (2008), an adequate nitrogen supply favors vegetative growth, expands the photosynthetically active area and increases the productive potential of the crop. This mainly benefits the herbaceous vegetables as they consist of leaves, tender stems and inflorescences. This study aims to analyze the economic viability of an irrigation system by dripping and the application of nitrogen fertilization for Jambu production
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