Fertilization on melon crop through irrigation water

Abstract

In order to evaluate the effect of the application of nitrogen and potassium through irrigation water on the melon crop (Cucumis melo L.), cv. Eldorado 300, a study was carried out at the Bebedouro Experiment Station, EMBRAPA-CPATSA, Petrolina, PE, Brazil. Two fertirrigation frequencies (daily and three times a week) and eight periods of nitrogen application, up to 55 days after germination, were used. In the control, 55% of the N and 100% of the K were applied at planting time and the 45% remaining N, applied 30 days after planting. In the other treatments, K was applied through irrigation water up to 42 days after germination. The trickle irrigation system was used. The highest yields were 26.40 tons/ha and 25.89 tons/ha with daily fertirrigation for the periods of up to 42 and 55 days, respectively. The application of N and K through irrigation water did not alter the chemical characteristics, soluble solids content, total acidity and pH of the melon fruits. Based on the results, the daily frequency and the application of N up to 42 days of the crop cicle can be recommended.