Application of Organic Fertilizer Originated from Shrimp Pond Solid Waste Using Different Bioactivators in Milkfish Nursery Chanos chanos (Forsskal, 1775) Hidayat Suryanto Suwoyo (a*) Sri Redjeki Hesti Mulyaningrum (a), Unggul Adi Utama (b), Subari Yanto (b), Amirah Mustarin (b), Makmur(a) and Andi Sahrijanna(a)
(a) Research Center for Fishery, National Research and Innovation Agency
(b) Agricultural Technology Education Study Program, Faculty of Engineering, Makassar State University
Abstract
Pond sediment was rich in total nitrogen, phosphor, potassium, organic matter, and other macro and micronutrients. Pond solid waste can be used as organic fertilizer through the composting process. The composting process could be run faster with the assistance of bioactivators. This study aimed to evaluate the effect of organic fertilizer application originating from shrimp pond solid waste using different bio activators on milkfish nursery, Chanos chanos (Forsskal, 1775). The study used a completely randomized design (CRD) with five treatments with 3 replications of respectively. The treatments combination of organic fertilizer composed of 2,000 kg/ha of pond solid waste+200 kg/ha of Urea + 100 kg/ha of SP-36 using five different bioactivators, namely: BIOTAN-28 (A), TR-04 (B), EM-4 (C), ISO (D), and organic fertilizer without bioactivator as control (E). Milkfish was reared in 30 days, observed variables were the composition and abundance of plankton, growth and survival rate of milkfish, and water quality. The results showed that the application of organic fertilizer originating from shrimp pond solid waste using different bio activators did not significantly different on the growth of natural feed, the growth and survival rate of milkfish (P>0.05) between treatment. The growth of milkfish obtained 0.35-0.78 g/ind with a survival rate ranging from 93.33-98.89%. The water quality obtained during the study still supports milkfish^s growth and survival rate.
