Irrigation is a practice widely used in fruit production in the Brazilian Northeast region, including in the papaya crop in order to increase their productivity. For the purpose of knowing the productive potential of papaya hybrid irrigated, an experiment was carried out in order to evaluate the performance of a papaya hybrid under different irrigations depths. Four irrigation depths (50, 75, 100 and 125% of ETo) were tested and the reference evapotranspiration was calculated by the Penman-Monteith model. The hybrid papaya used was UENF/Caliman 01, which was planted in single rows, spaced 4 x 2m from each other, and irrigated by dripping. The experimental design in randomized blocks was used with six replications and three plants per plot. The following variables were evaluated: transversal diameter, longitudinal diameter, pulp thickness, external and internal appearances, soluble solids, titratable acidity, pulp pH and soluble solids/titratable acidity relation. The higher transversal and longitudinal diameters of the fruit were obtained applying an irrigation depth of about 108% of evapotranspiration. The UENF/Caliman 01 hybrid can be cultivated in the semiarid region of the State of Paraiba, Brazil, with replacement rate of 100% ETo, without compromising the quality of the fruits. KEYWORDS:Carica papaya L., irrigation, water consumption, fruit production. QUALIDADE DE HÍBRIDO DE MAMOEIRO CULTIVADO SOB DIFERENTES LÂMINAS DE IRRIGAÇÃO RESUMO:A irrigação é uma prática muito utilizada na fruticultura no Nordeste brasileiro, inclusive no cultivo do mamoeiro, a fim de aumentar sua produtividade. Desejando-se conhecer o potencial produtivo de híbridos de mamoeiro irrigado, realizou-se experimento com o objetivo de avaliar a qualidade de frutos de mamoeiro (Carica papaya L.) híbrido em função de diferentes lâminas de irrigação. Foram testadas quatro lâminas de irrigação (50; 75; 100 e 125% da ETo), sendo a evapotranspiração de referência calculada pelo modelo de Penman-Monteith. Utilizou-se o mamoeiro UENF/Caliman 01, que foi plantado em fileiras simples, sendo o plantio realizado no espaçamento de 4 m x 2 m, irrigado por gotejamento. O delineamento experimental foi em blocos ao acaso, com seis repetições e três plantas úteis por parcela. As variáveis estudadas foram: diâmetro transversal, diâmetro longitudinal, espessura da polpa, aparências externa e interna, sólidos solúveis, acidez titulável, pH e relação sólidos solúveis/acidez titulável. Os maiores diâmetros transversal e longitudinal dos frutos foram obtidos nas lâminas de irrigação de cerca de 108% da evapotranspiração. O híbrido UENF/Caliman 01 pode ser cultivado na região do sertão paraibano com taxa de reposição de 100% da ETo, sem comprometer a qualidade dos frutos.
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