India's fertilizer manufacturing landscape features several mega-scale production complexes distributed across the country. Among the largest single-location production plants are facilities operated by major cooperatives and public enterprises, such as IFFCO's massive manufacturing units in Aonla and Phulpur in Uttar Pradesh, and National Fertilizers Limited's sprawling gas-based complex located at Vijaipur in Madhya Pradesh, which deliver millions of metric tonnes of urea and agricultural nutrients annually to support national food security.