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• CSISA has done N balance modeling to figure out where can farmers safely reduce N application without negatively impacting yield

• Anticipated yield response when managing for a certain N balance

  • N balance = N supplied in fertilizer less N absorbed by crop biomass

  • 100kg of fertilizer, estimates plant uptake is 80, N balance = +20 

  • Target +30kg balance which provides a safe buffer; farmer unlikely to see yield reduction

• Lots of places with opportunity to reduce N fertilizer by 20 kg per hectare without impact yield

  • What is this worth to farmers in terms of rupees saved? Need to quantify

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How to operationalize?

1. Identify target districts

2. JEEViKA alignment

3. Awareness building videos

   1. Storyboard; why should farmers care?

   2. Introduce concept of N balance and flag where they may be potential

4. Capture critical parameters via VRPs / data wallet in order to deliver site specific recommendation

   1. Previous season yield and fertilizer applied

   2. CSISA has formula for estimating optimal fertilizer amount (w 30kg per hectare buffer)

5. Deliver recommendation and track adoption

6. Quantify impact

   1. Farmer costs savings

   2. 100 farmers realizing this emission reduction for rice is equal to ~6,800 passenger vehicles for one year or nearly 16mn kg of coal burned. Reference

      1. Estimate emission reduction of 172 kg/ha-1 CO2e for wheat and 316 kg/ha-1 CO2e for paddy from reducing surplus nitrogen fertilizer.

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