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Fertilizer Statistics Methodology

Fertilizer Statistics Methodology. Robert Mayo Senior Statistician FAO Statistics Division UNECE/FAO/Eurostat Workshop on Environment Statistics (Budva, Montenegro, May 2013). The importance of fertilizers and fertilizer statistics and indicators. Environmental impacts

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Fertilizer Statistics Methodology

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  1. Fertilizer StatisticsMethodology Robert Mayo Senior Statistician FAO Statistics Division UNECE/FAO/Eurostat Workshop on Environment Statistics (Budva, Montenegro, May 2013)

  2. The importance of fertilizers and fertilizer statistics and indicators • Environmental impacts • Development of production capacities; • Production, imports and exports; • Deliveries; • Stocks; • Use in agriculture; • Prices.

  3. Essential nutrients • Large quantities of: Nitrogen, Phosphorus, Potassium; • Smaller quantities of: Sulphur, Calcium, Magnesium; • Very small quantities of: Iron, zinc, manganese, copper, boron, molybdenum and chlorine.

  4. Terminology • Nitrogen – N, • Phosphates – P or P205, • Potash – K or K2O, • Calcium- CaO or Ca, • Magnesium - MgO or Mg.

  5. Classification • Straight fertilizers: N, P, or K; • Compound fertilizers: • NP compounds; • NK compounds; • PK compounds; • NPK compounds.

  6. Essential elements • Carbon (C), Hydrogen (H), Oxygen (O); • Primary nutrients: Nitrogen (N), Phosphorus (P205), Potassium (K20); • Secondary nutrients: Sulphur (S), Calcium (CaO), Magnesium (MgO) • Micronutrients: Boron (B), Copper (Cu), Iron (Fe), Zinc (Zn), Manganese (Mn), Molybdenum (Mo), Chlorine (Cl)

  7. Conversion factors for major nutrients P205x 0.4364 = P P x 2.2919 = P205 K20 x 0.8302 = K K x 1.2046 = K20 CaO x 0.7147 = Ca Ca x 1.3992 = CaO Mgo x 0.6030 = Mg Mg x 1.6582 = MgO

  8. Commonly used straight nitrogenous fertilizers • Straight Nitrogenous Fertilizers % N % N • Ammonium sulphate 21 20 - 21 • Ammonium nitrate 33.5 30 - 35 • Ammonium sulphate nitrate 26 • Calciumammonium nitrate (CAN) 26 20.5 - 30 • Sodium nitrate 16 • Calcium nitrate 15.5 • Urea 46 44 - 46 • Anhydrous ammonia (direct application) 82 • Aquaammonia 20.5 10 - 30 • Urea ammonium nitrate 32 26 – 32 • Ammonium chloride 25

  9. Commonly used straight phosphaticfertilizers • Straight Phosphatic Fertilizers % P205 % P205 • Single superphosphate (SSP)18 16 - 22 • Concentrated superphosphate 30 or 32 23 - 39 • Triple superphosphate (TSP)46 45 - 48 • Basic slag 14 8 - 18 • Ground rock phosphate (direct application) 30 23 - 35 • Fused magnesium phosphate 20 19 - 20

  10. Commonly used straight potassicfertilizers • Straight Potassic Fertilizers % K20 % K20 • Potassium chloride (muriate of potash) 60 59 - 61 • Potassium chloride with magnesium 40 39 - 41 • Potassium sulphate 50 48 - 52 • Potassium magnesium sulphate 22 or 30 21 - 30 • Ammonium Phosphates Examples of grades • Diammonium phosphate (DAP) 18–46-0 • Monoammonium phosphate (MAP) 11-52-0 11- (50-55) - 0 • Ammonium polyphosprate 10-34-0

  11. Commonly used potassium nitrate fertilizers • Potassium nitrate 13 – 0 - 47 • NP, PK, NK and NPK compounds Numerous grades, for example: • 20-20-0, 16-20-0, 13-13-21, • 15-15-15, 17-17-17, 12-24-12, • 20-10-10, 23-23-0, 25-5-5.

  12. Nutrient content and fertilizer grade • ammonium sulphate has 21% N • 100 kg of ammonium sulphate product contains 21 kg N. • superphosphate has 18% P205 • 100 kg of single superphosphate product contains 18 kg P205 • potassium chloride contains 60% K20 • 100 kg of potassium chloride product contains 60 kg K20.

  13. Nutrient content and fertilizer grade • For example, diammonium phosphate containing 18% N and 46% P205 is expressed as 18-46-0. • A compound fertilizer 12-6-6 contains 12 kg N, 6kg of P205 and 6kg of K20. • The "nutrient ratio" refers to the ratios of the three nutrient analyses e.g. the 12-6-6 fertilizer referred to above has a 2:1:1 ratio.

  14. Time periods • No standard time period for reporting fertilizer statistics; • Calendar year basis; • Split year basis - July/June; • Other time periods used; • Use of a standard, calendar year (January to December) advised. This provides possibility to relate the fertilizer consumption to agricultural production, yield, etc.

  15. Nutrient content calculation - N

  16. Nutrient content calculation - P

  17. Nutrient content calculation - K

  18. Nutrient content calculation – N, P, K

  19. Further information and acknowledgements Further information available at: FAO Statistics Division: http://www.fao.org/economic/ess/ess-agri/ess-resource-meth/en/ FAOSTAT Fertilizers: http://faostat.fao.org/site/575/default.aspx#ancor Acknowledgements: The input of Dominic Ballayan and Simona Mosco is very much appreciated in preparing this presentation.

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