Microbial consortia increase yield for paddy farmers

A rice field in Chidambaram, Cuddalore where a microbial consortium was used. | Photo credit: Special arrangement

For the past two years, S. Parthiban (45), a farmer from Chidambaram in Cuddalore district, has watched his rice yields stagnate despite investing money in chemical fertilizers. Each harvest season he faced the same frustrating reality.

The turning point came in 2025 when Parthiban was introduced to the concept of microbial consortia – a balanced mix of beneficial bacteria and fungi at a workshop organized by the Chidambaram Area Progressive Farmers Association.

Although most farmers were hesitant, Parthiban decided to try them on his four-acre paddy farm in Chidambaram. He used them on the original variety ADT-46 and the results showed an increase in yield at the first harvest in January this year.

“Each acre produced 38 bags of 60 kg, an increase of more than 10 bags from the usual 28 bags per acre. I used only 50% of the usual chemical fertilizer, saving money,” said Parthiban.

According to S. Raj Mohammed, former Joint Director of Horticulture, the strain of unique proprietary microbial consortia used by the farmer has been scientifically tested and validated at the Tamil Nadu Agricultural University (TNAU). This strain helps in increased microbial counts and a significant increase in beneficial microorganisms, revitalizing soil health, improving soil enzyme activity and beneficial microbial activities, he said.

It is necessary to explore and adopt innovative bio-agricultural inputs to maintain soil health besides increasing the productivity of rice and other food crops, he added.

Published – 14 Jun 2026 22:52 IST