Rice azolla fish symbiosis is a new development in ecological agriculture.
The results of a 2-year field experiment indicate that rearing fish and azolla in ricefields increases the output of rice, azolla, and fish. The rice azolla system had the next highest yield, followed by rice fish culture and the control. Effects of rice and rice azolla fish on fish growth and output. The cost of inputs of seed, fertilizer, labour, and fry were compared with the outputs of rice, straw, and fry. Economic effects of rice azolla fish symbiosis.