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Table 3

Prices of fertiliser and calculation of selling price of struvite

Type of Fertiliser, Nutrients and PriceNP2O5K2OMgSPrice [INR/kg]
Complex Fertiliser 20 20 19.00 
Complex Fertiliser 24 24 24.40 
Complex Fertiliser 28 28 25.51 
Complex Fertiliser 10 26 26 24.34 
Complex Fertiliser 12 32 16 24.54 
Complex Fertiliser 14 35 14 25.73 
Complex Fertiliser 15 15 15 21.20 
Complex Fertiliser 17 17 17 25.00 
Diammonium Phosphate 18 46 42.00 
Diammonium Phosphate (Imported) 18 46 25.10 
Ammonium Sulphate 20.6 23 13.17 
Ammonium Phospho Sulphate 16 20 13 19.05 
Ammonium Phospho Sulphate 20 20 13 20.09 
Muriate of Potash 60 18.98 
Magnesium Sulphate 9.9 13 12.00 
Calculation of Selling Price of Struvite Using Linear Regression Model Price/kga Subsidy/kgb Total Price/kg 
Nitrogen N    51.64 18.9 70.54 
Phosphorus P    47.92 15.21 63.13 
Potassium K    30.85 11.12 41.97 
Magnesium Mg    109.66 109.66 
Sulfur S    8.79 3.56 12.35 
Struvite (N:5.7%, P:28.9%,Mg:9.8%) Total price including subsidy based on N, P & Mg price calculated above 33.01 
Type of Fertiliser, Nutrients and PriceNP2O5K2OMgSPrice [INR/kg]
Complex Fertiliser 20 20 19.00 
Complex Fertiliser 24 24 24.40 
Complex Fertiliser 28 28 25.51 
Complex Fertiliser 10 26 26 24.34 
Complex Fertiliser 12 32 16 24.54 
Complex Fertiliser 14 35 14 25.73 
Complex Fertiliser 15 15 15 21.20 
Complex Fertiliser 17 17 17 25.00 
Diammonium Phosphate 18 46 42.00 
Diammonium Phosphate (Imported) 18 46 25.10 
Ammonium Sulphate 20.6 23 13.17 
Ammonium Phospho Sulphate 16 20 13 19.05 
Ammonium Phospho Sulphate 20 20 13 20.09 
Muriate of Potash 60 18.98 
Magnesium Sulphate 9.9 13 12.00 
Calculation of Selling Price of Struvite Using Linear Regression Model Price/kga Subsidy/kgb Total Price/kg 
Nitrogen N    51.64 18.9 70.54 
Phosphorus P    47.92 15.21 63.13 
Potassium K    30.85 11.12 41.97 
Magnesium Mg    109.66 109.66 
Sulfur S    8.79 3.56 12.35 
Struvite (N:5.7%, P:28.9%,Mg:9.8%) Total price including subsidy based on N, P & Mg price calculated above 33.01 

aCalculated based on the current fertiliser prices in the market (Indiastat 2020).

bFertiliser subsidy provided by the Government of India.

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