Efeito da adubação nutricional na qualidade de melão rendilhado (Cucumis Melo Var. Reticulados Naud).

Abstract

Fruits and vegetables are essential constituents of human food, representing our main source of minerais and vitamins. The quality that se much search can be a determining factor for the marketing, can be defined as the set of characteristics that differentiate individual units of a product and have significance in determining its acceptability degree. Among the melons produced in Brazil, the muskmelon has some business advantages, such as preferred by the consumer, good price and commercial cultivation in small áreas, with good profitability. The objective of this study was to evaluate the efficiency of organic fertilizers different sources and doses on the muskmelons quality, compared with organic and mineral fertilizers already pre-established, representing a stage in the índices establishment used as criterion of maturity for melons harvest and: storage. We assessed the sources of bovine dung, goat dung and sheep dung associated with chemical fertilizers. The dungs were tested at doses of 20, 35, 50 and 65 t/ha'l, and two witnesses: one with organic fertilization only 20 t/ha'l with bovine dung and the other with only chemical fertilizer, both following recommendations. After harvesting and weighing, the correspondding .fruit from each treatment were taken to the Vegetables Technology Laboratory. To evaluate the physical quality and physical-chemistry of the fruits was considered the optimal levei of maturity for harvest (fruit physiologically formed commercial maturity) The experiment was conducted in a completely randorDized design. Where the fourteen treatments were represented by four fruits, each equivalent fruit to a repetition, totaling 56 fruits. The treatments were eValuated by analysis of variance. The oscillation between the physical quality foÍund in fruits, probably due to differences between the utilized trataments. The pulp yield of the treatments studied had higher values for Treatment 2 -- bovine dung 35 t/ha, which had yields above 75%. Among the treatments evaluated, it was observed that 20 t/ha dosages used for different compounds, had greater significance for the physical and physicochemical variables analysis. It was also observed that the treatments with organic compounds when compared to mineral fertilization recommended showed more significant for the physical and physic-chemical evaluated and can be considered in this way that was effective organic fertilizer on fruit quality evaluated.