Web-based tool for calculating field-specific nutrient management for rice in India.

Site-specific nutrient management (SSNM) can be an alternative to a recommendation for uniform fertilizer use across a rice ( L.) production system within a country or region of a country. We developed a web-based decision support tool named Nutrient Manager for Rice (NMR), which used principles of SSNM to calculate fertilizer N, P, and K rates for individual fields based on a target yield set for each field.