Liquid Organic Fertilizer Produced from Innards Waste of Catfish (Pangasius djambal) by Using Fermentative Microbes (EM4) and Molasses

Liquid organic fertilizer is a liquid fertilizer yielded from the decomposition of organic materials derived from varied wastes which contain more than one nutrient element. The study was aimed to determine the quality of liquid organic fertilizer made from catfish innards waste by adding fermentative microbes (EM4) and molasses. The research method used was experimental with different formulation consisting of 0% EM4 + 30% molasses (K1), 30% EM4 + 0% molasses (K2), 20% EM4 + 20% molasses (P1), 30% EM4 + 30% molasses (P2), and 40% EM4 + 40% molasses (P3). The percentage is calculated from the total weight of all raw materials used. Parameters measured include yield, pH, total lactic acid bacteria (LAB), Nitrogen, Phosphorus, and Potassium. The results showed that the best value for yield was shown in K2 at 34.73%, the pH value in P3 at 5.10, total amount of LAB in P3 at 2.10⁴ cfu/g, the value of Nitrogen (N) in P3 at 4.30%, the value of Phosphorus (P₂O₅) in P3 at 0.41%, and the value of Potassium (K₂O) in P3 at 3.11 ppm. It is possible to increase the content of phosphorus and potassium by adding with EM4 and molasses more than 40% each.