The plant is expected to resume operations in the first week of April, the company said in a BSE filing.
"The shutdown of the plant is necessitated due to policy of the Government of India for production beyond 100 per cent quantity as permissible under the pricing mechanism, during the financial year 2014-15," the company said in BSE filing.
Urea is a controlled commodity. Government gives the difference between cost of production and MRP as subsidy.
The annual capacity of the Birla plant is about 1.6 million tonnes. The company will carry out various maintenance jobs during the shutdown period, it added.