Integration of Aquaculture, Aquatic Plant and Plant Cultivation Systems

Abstract

Integrated agricultural systems are very vital to the agriculture country. This study stimulated a natural system that is interdependent among several organism species. The ecosystem consisted of nutrient circulation in the integrated aquaculture systems (Cyprinus Carpio Linn. or fancy crap), cultivation of aquatic plants (Vallisneria asiatica or spiral tape grass) and plants in soil (Lactuca sativa var.crispa L. or green oak). The 14 fancy craps started with 50-500 g in a 5.6 m of pond volume. Used fancy craps waste excretion in the nutrient water was utilized in the circulation system by feeding 40 spiral tape grasses planted in 2.5 m of pond volume and to green oaks in the pot size of 60 x 200 cm. The results indicated that water quality in fish pond showed Dissolved Oxygen (DO) ranging from 6.27 to 7.15 mg/L and pH ranging from 7.2 to 8.9. Nitrate, ammonia and phosphate were in the range of 5.52-8.09, 0.195-1.49 and 0.124-0.202 mg/L, respectively. All nutrients tended to continuously decrease from starting the experiment to the end of the experiment. Specific growth rate of fancy craps was 3.45 and survival rate was 100%. The shape of fancy craps was long, slender, cylinder and beautiful color, which did not change from the beginning of typically commercially available fancy craps. The length and weight of spiral tape grasses increased 2.5 times. On the 45 day, green oak yielded was 2,750 g/m, which was slightly higher than that of control set by hydroponic system. Therefore, this system can be used by farmers to reduce the use of water resources, fertilizers and cost savings. 