Tamil Nadu is the largest producer of bio-fertiliser, an organic manure that improves soil health, in the country followed by Karnataka, Kerala and Maharashtra in 2009-10.
“In 2009-10, Tamil Nadu produced 3,733 tonnes of bio-fertilisers, followed by Karnataka at 3,696 tonnes,” an official statement said.
The other major producers of bio-fertilisers are Kerala (1,937 tonnes), Maharashtra (1,861 tonnes) and Madhya Pradesh (1,588 tonnes), it added.
According to studies, the agriculture production can increase by 10-20 per cent with its use.