Growth and Yield Optimization of Kale (Brassica oleracea var. Acephala) through Vegetable Waste Liquid Fertilizer and Leaf Compost
Abstract
The growing demand for functional foods with high nutritional value, along with increasing public awareness of a healthy lifestyle, has led to a continuous rise in kale consumption in Indonesia. The use of organic fertilizers offers an environmentally friendly and sustainable solution. This study examines the effectiveness of combining liquid organic fertilizer derived from vegetable waste with leaf compost on the growth and yield of kale plants. The experimental method employed a factorial Randomized Block Design consisting of two factors. The first factor was the application of liquid organic fertilizer at three levels: S0 = 0 ml/L of water, S1 = 50 ml/L of water, and S2 = 100 ml/L of water. The second factor was leaf compost with four levels: K0 = 0 g/polybag, K1 = 100 g/polybag, K2 = 200 g/polybag, and K3 = 300 g/polybag. The results showed that the application of liquid organic fertilizer from vegetable waste and leaf compost had a highly significant effect on plant height, number of leaves, stem diameter, and fresh weight of plants. However, the interaction between the two treatments exhibited no significant effect on all observed parameters.
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