Sweet passion fruit yield and fruit quality related to fertilization with urea and cattle manure

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Abstract
An experiment was conducted in Campos dos Goytacazes in the State of Rio de Janeiro, Brazil, in order to evaluate the applying effect of nitrogen and cattle manure doses on sweet passion fruit yield and quality. The experimental outline used was complete block, in a 5 × 2 factorial arrangement, five nitrogen doses (0, 50, 150, 250 and 350g plant−1 year−1) and two types of organic fertilization (with and without cattle manure), with 4 replications. Sweet passion fruit yield presented an increase of 44.4% due to the application of the best nitrogen doses in comparison with the treatment which did not receive nitrogen fertilization. The treatments that did not receive cattle manure presented higher average weight, diameter and thickness of the fruit skin, while the addition of cattle manure presented greater juice concentration and higher percentage of seeds in sweet passion fruit fruits. The increase in nitrogen doses allowed an increase in concentration and total titratable acidity of the fruits.

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