Tamil Nadu accounts for 8.5% of India's total rice production and Cauvery Delta is the major rice producing region of the state where two rice crops are typically grown each year in the cropping systems of either rice-rice-fallow or rice-rice-pulses depending on the availability of irrigation water. The improved productivity under irrigated cropping system is vital for meeting the profitability of rice farmers in the state and site specific nutrient management offers significant importance in this dimension. Thus a study on "Site-specific nutrient management for rice-rice systems in Tamil Nadu was proposed with the following objectives.

Objectives:

1) Develop principles and increase knowledge on effective nutrient management for rice-rice production systems in the old and new delta of Cauvery region
2) Facilitate the adoption and widespread uptake of improved nutrient management practices for rice
3) Develop guidelines, training materials, decision support tools, videos, and other materials based on SSNM principles

Output #1: Identify, evaluate, and implement improved nutrient management practices based on SSNM principles for rice-rice systems through omission experiments in both the regions of Cauvery delta during two rice growing seasons
Output #2: Develop nutrient management principles for rice
Output #3: Develop training materials, guidelines, videos, and other tools to promote practices based on existing SSNM knowledge
Output #4: Release evaluated decision support tools for rice-rice system that facilitate field-specific nutrient management