ORGANIC PAK CHOI PRODUCTION IN AQUAPONICS SYSTEM
Ratih1, Dea Ekaputri Andraini 2

Agrotechnology, Faculty of Agriculture, Makassar Islamic University, Jl. Perintis Kemerdekaan KM 9 No 29, Tamalanrea Indah, Makassar, South Sulawesi, 90245 Indonesia

Abstract

Population growth in urban areas increases in line with the concentration of economic activity in cities. In order to create food security in an effort to fulfill food availability, one of the urban farming technologies that can be developed is aquaponics. Aquaponics is a combination of aquaculture cultivation systems (fish cultivation) and hydroponics (plant cultivation without soil media), where there is a mutualism symbiotic relationship between fish and plants as in a natural ecological system. Later it will produce two organic products, namely plants and fish. This study aims to determine the quality and nutrient status of fish waste in supporting the growth and productivity of pak choi plants. The research methodology made two installations of the DFT model, each connected to a tilapia fish pond and a goldfish pond. The filtered water is collected and flowed to the installation for plant use and then returns to the fish pond. Plant heights and number of leaves were measured every week and weight of stover at six weeks of age. Measurement of water quality and nutrient status with four samples every ten days, analyzed in the laboratory. Statistical analysis with paired T test. The results obtained were the highest weight of pak choi plants using tilapia waste, namely 131 grams per plant, organic C value 1.12 mg / l, PO3 2.90 ml / l, K 0.24 mg / l, nitrate 0.15 ppm , ammonia 0.06 ppm, DO 4.64 ppm, TDS 155 ppm, pH 7.3, while using heavy goldfish waste, weighed 107 grams per plant, organic C value 1.08 mg / l, PO3 2.98 ml / l, K 0.23 mg / l, nitrate 0.22 ppm, ammonia 0.04 ppm, DO 6.96 ppm, TDS 126 ppm, pH 7.4.

Keywords: aquaponics, pak choi production, urban farming, organic vegetables

Topic: Crop Production and Environment