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Fisheries > Culture Fisheries > Integrated Fish Farming

Horticulture-fish system

The top, inner and outer dykes of ponds as well as adjoining areas can be best utilized for horticulture crops. Pond water is used for irrigation and silt, which is a high-quality manure is used for crops, vegetables and fruit bearing plants. The success of the system depends on the selection of plants. They should be of dwarf type, less shady, evergreen, seasonal and highly remunerative. Dwarf variety fruit bearing plants like mango, banana, papaya, coconut and lime are suitable, while pineapple, ginger, turmeric, chilli are grown as intercrops. Plantation of flower bearing plants like tuberose, rose, jasmine, gladiolus, marigold and chrysanthemum provide additional income to farmers.

Ideal management involves utilization of middle portion of the dyke. Residues of vegetables cultivated could be recycled into fishponds, particularly when stocked with fishes like grass carp. Grass carps can be stocked @ 1000/ha and addition of common carps are beneficial for utilizing feacal debris. In mixed culture of grass carps along with rohu, catla and mrigal, in 50: 15: 20: 15 ratio at a density of 5000 fish/ha. Similarly when banana or coconut is cultivated in rows in wetlands, the ditches made between such rows act as supply or drainage canals. These canals serve as fish culture systems owing to their round-the-clock supply of water and rich insect populations. Larvivorous air-breathing fish species such as snakeheads C. marulius and C. striatus and tilapia, O. mossambicus are ideal species for culturing in this system. This integrated system fetched 20-25% higher return compared to aquaculture alone.

horti

Horticulture fish integrated system

Mushroom-Fish System

Cultivation of edible mushroom in India is quite recent. Three types of mushrooms being commercially cultivated in India are Agaricus bisporus, Voloriella spp. and Pleurotus spp., commonly known as European button, paddy straw and oyster mushroom. Mushroom cultivation requires high degree of humidity and therefore its cultivation along with aquaculture tremendous scope. Method of cultivation involves use of dried paddy-straw chopped into 1.2 cm bits, soaked in water overnight. Excess water is drained off. Horsegram powder (8 g/kg straw) and spawn (30 g/kg straw) is added and mixed with wet straw in alternating layers. Perforated polythene bags are filled with substrate and kept in room at 21o-35oC with required light and ventilation. The mycelial growth occurs within 11-14 days. Polythene bags are cut open at this stage, water is sprayed twice a day and in a few days mushroom crop becomes ready for harvest. The paddy-straw after mushroom cultivation is utilized for cattle feeding.

Seri-Fish System

In this integration, mulberry is the producer; silkworm is the first consumer while fish is the secondary consumer, ingesting silkworm faeces directly. Inorganic nutrient in the silkworm faeces are utilized by phytoplankton, and filter-feeding fish in turn consumes heterotrophic bacteria. The optimum range of temperature and humidity is 15-32oC and 50-90% respectively. The seri-fish system provides linkages between mulberry and pond sub-system. Harvested mulberry leaves are fed to silkworm and the waste material obtained from silkworm rearing enters fish-pond as a mixture of mulberry leaves and silkworm excrement. Mulberry dykes yield leaves at 30 tonnes/ha/year, when fed to silkworm 16-20 tonnes of waste is produced. In 1 ha mulberry-pond system, 50% of area is kept for dyke and remaining is kept as water area. During winter, vegetables are inter-planted with mulberry. A production of 30 tonnes of mulberry-leaves/ha, 3.75 tonnes of vegetables/ha can be attained.

seri

Sericulture fish integrated system

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