Pengaruh Penambahan Kalium dan Konsentrasi Giberelin terhadap Pertumbuhan dan Hasil Melon (Cucumis melo L.) Sistem Hidroponik

Abstract

Melon is one of seasonal fruit commodities favored by people because it has many advantages and delicious taste. However, productivity of melons in Indonesia from 2017-2019 experienced an ups and downs. To increase productivity to optimum, agricultural cultivation technology is needed to increase the yield and quality of melons. It is necessary to cultivate with a hydroponic system to increase the yield of melon plants with the addition of Potassium and Gibberellins. Potassium can improve the quality of melons and gibberellins function to stimulate plant growth and fruit development. This study aims to the effect of the interaction between the addition of potassium and gibberellins with different concentrations on the growth, yield and quality of melon fruit. This research has been carried out at Greenhouse of Agriculture Faculty, Brawijaya University from November 2020 - March 2021. The experimental design used in this study is Split Plot Design (SPD). Potassium concentration treatment in KNO3 fertilizer was placed in main plot. Meanwhile, Gibberellin concentration treatment was placed in sub-plots. The results showed that the addition of potassium influenced the variable thickness of melon flesh which was influenced by gibberellins. The addition of KNO3 showed a significantly different effect on the variables of leaf area, plant dry weight, fruit weight, fruit diameter and sweetness of melon. While the Gibberellins treatment also showed significantly different results on leaf area, dry weight and diameter of melons. Gibberellin treatment with a concentration of 60 ppm was able to produce the highest melon fruit weight.