This is the major step in the culture.intially we have to check the soil quality we will test the soil for its quality.There can be some ratio of minerals are
- Organic carbon ratio - 15:20 it can be variable.
- Nitrogen and carbon ratio - 20ppm.
- Water quality should be
- For Fish = 0-2 salinity
- For Shrimp = 0-35 ppt salinity
- pH = 7.5-8.5ppm(both for shrimp and fish)
- Alkalanity = 150-250
- Hardness = 250-300
- Ammonia = 0.5ppm
- Hydrogensulphate = 0.02ppm
- Nitrite = 4-5ppm
- Methane = 0.01ppm
- Carbon-di-oxide = 0.03ppm
- Bacteria are of two types:
- Green = 50cfu
- Yellow = 500cfu
Fertilisation of the pond is an important means of intensifying fish culture by increasing the natural productivity of the pond. The fertilisation schedule has to be prepared after studying the quality of the pond soil. A combination of both Organic and Inorganic fertilisers may be used for best results. The fertiliser programme has to be suitably modified depending on the growth of the fish, available food reserve in the pond, physico chemical conditions of the pond and climatic conditions.
