Effect of Dekamon Plant Growth Regulator Concentration and NPK Phonska Plus Fertilizer Dosage on the Growth and Yield of Purple Eggplant (Solanum Melongena L.)

Purple eggplant is a commodity with strong market prospects due to its relatively high economic value and rich nutritional content. Demand for eggplant continues to increase; however, this has not been matched by an increase in production. One of the strategies to enhance production is through the improvement of cultivation techniques. This study aims to evaluate the optimal combination of Dekamon plant growth regulator (PGR) concentrations and NPK Phonska Plus fertilizer doses on the growth and yield of purple eggplant (Solanum melongena L.). The research was conducted using a factorial experimental method in a Completely Randomized Design (CRD) consisting of two factors: PGR concentration (0, 2, and 4 ml/l) and NPK fertilizer dosage (20, 25, and 35 grams/plant). The results showed a significant interaction between PGR and fertilizer treatments on plant height, number of leaves, fruit weight, and number of fruits per plant at various observation times. The most effective combination was the application of Dekamon at 2 ml/l with NPK fertilizer at 25 grams/plant, which resulted in optimal plant growth and yield.