Fish Farming In The Rice Field, I’m Applying
Fish Farming In The Rice Field
Growing rice in rice-fields is not good enough to maximize the benefit in return. If so, you should grow the rice integrated with the fish or you should also raise additionally pigs, hens, ducks, chickens, cattle, and vegetables. If you grow the fish in the rice fields, the yield of the rice would increase up to 15% and you can also get the fish for consumption in the family.
The fish could eat some kinds of weeds and worms in the soil and also eat insects that damage the rice crops. Consequently, the fish could help the rice grow well. Also, it helps reduce the expenses for both fish feeds and rice fertilizers or other insecticides. The best time to farm fish is in the rainy season. It is when the water level in the ponds or rice fields is enough for stocking fish.
The fish can be put into the rice fields after the small rice (nursery) was planted for 10-15 days. It is when the rice roots are strong enough. In order to gain more yields from both fish and rice, a suitable place should be near to water resources, close to your house, far from the chemical waste disposals, and the soil should be fertile and able to keep water for long during the drought.
The first thing to make the place for the fish is that it should be as similar as possible to their natural refuge. Therefore, inside the rice fields, there should be canal system (width: 2-4m; depth: 0.8-1m). The ditch should be dug approximately 0.5m far from the dike of the rice-fields in order to avoid breaking down the land into the canal.
The width of the dike should be about 1-2m long and 0.4-0.6m wide so that it could prevent the fish from escaping during the flooded season. The water level inside the rice field should have at least 20-30cm and in the canal should be 0.8-1m.
The size of the canal should be about 15-20% of the total squares of the rice fields. The benefits of the canal system is for rearing the small fish while we are plowing the rice field, for sheltering for fish during the hot time, for being easy to harvest fish before/after harvesting rice, and for having water to grow vegetables.
Any rice fish farming should have 1 or 2 sluice gate for inlet and outlet water systems. Before you put the fish in to the rice field, the water quality is so important. If the pH is low, it is not good to put the fish. You can use lime for increasing the pH level before we flow the water in.
Liming application about 10-15kg/100m2 should be one week before stocking the fish in to the rice field because it would kill not only fish predators and virus, but also other fish. It can help improve the water transparency. Applying the organic manures of cows, pigs, chickens, and ducks help increase the natural foods for fish and also the pH level.
The quantities of the organic manures should be from 25-40kg/100m2 of the total canal areas. Then when the water goes green, you can put the small fish. There are some fish species that can be put along with growing rice such as tilapia, silver barb, common carp, Indian carp, snake skin gouramy, and freshwater prawn.
You can buy the fish from both private or government hatcheries. Before you releasing the fish into the rice fields, you should wait for about 15 minutes and then you have to mix the rice field water with the one in the bag, and then allow the fish into the rice field by themselves.
The number of fish should be put is about 1-2 heads of fish/m2 and their size should be 4-6cm. And if the water in the rice fields is not green, it means that it lacks of natural feeds. So, you have to add more natural feeds or you can use vegetables or other additional feeds (rice bran or broken rice) available in your house.
Regarding management, you have to check the rich-field dike and the water level every day. And the water should be kept for 20-30cm. Below is the best video of how to farm fish in the rice field.
This is the best video of how to raise fish with the rice in the rice-fields.
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