The growth response of purple eggplant plants to BCK compost fertilizer and coconut water compost fertilizier

In an effort to increase the productivity of purple eggplant (Solanum melongena L.), BCK compost and old coconut water compost can be used because continuous use of inorganic fertilizers can reduce soil fertility and lower plant productivity. The study aims to determine the response of BCK compost fertilizer, coconut water compost fertilizer, and their combination on the growth of purple eggplant plants, as well as the increase in soil nutrients after organic fertilizer application. Using a completely randomized design (CRD), the research included compost production, preparation of planting media with 200 g and 300 g fertilizer applications, seed planting, plant maintenance, and harvesting, with observations on various growth parameters and analysis using ANOVA along with nitrogen, phosphorus, and potassium testing. The research showed that all three organic fertilizers improved the growth of purple eggplant plants, with significant results in most parameters except wet weight. Therefore, the use of BCK compost, old coconut water compost, or a combination of both is recommended to enhance plant growth and increase soil nutrients.