Fertilizer Statistics Methodology
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Transcript of Fertilizer Statistics Methodology
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Robert Mayo
Senior Statistician
FAO Statistics Division
UNECE/FAO/Eurostat Workshop on Environment Statistics
(Budva, Montenegro, May 2013)
Fertilizer StatisticsMethodology
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Terminology
• Nitrogen – N, • Phosphates – P or P205,
• Potash – K or K2O,• Calcium- CaO or Ca,• Magnesium - MgO or Mg.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Classification
• Straight fertilizers: N, P, or K;• Compound fertilizers:
• NP compounds;• NK compounds;• PK compounds;• NPK compounds.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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)
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Conversion factors for major nutrients
P205 x 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
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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 Calcium ammonium nitrate (CAN) 26 20.5 - 30 Sodium nitrate 16 Calcium nitrate 15.5 Urea 46 44 - 46 Anhydrous ammonia (direct application) 82 Aqua ammonia 20.5 10 - 30 Urea ammonium nitrate 32 26 – 32
Ammonium chloride 25
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Commonly used straight phosphatic fertilizers
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
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Commonly used straight potassic fertilizers
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
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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.
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Nutrient content calculation - NFertilizer Nutrient
ContentMaterial
Tonnes
Nutrient
NStraight nitrogenous
fertilizers
Ammonium sulphate 21 % N 2153 452
Calcium ammonium nitrate
26 % N 587 153
Urea 46% N 3286 1512
Sub Total 6026 2117
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Nutrient content calculation - P
Fertilizer NutrientContent
Material
Tonnes
Nutrient
P2O5
Straight phosphatic
fertilizers
Single superphosphate
18% P2O5 1511 272
Triple superphosphate 18% P2O5 3856 1774
Sub Total 5367 2046
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Nutrient content calculation - K
Fertilizer NutrientContent
Material
Tonnes
Nutrient
K2O
Straight potassic
fertilizers
Muriate of potash 60 % K20 8200 4920
Sulphate of potash 50 % K20 2562 1281
Sub Total 10762 6201
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
Nutrient content calculation – N, P, KFertilizer
Complex
Nutrient
Content
MaterialTonnes
Nutrient
N
Nutrient P2O5
Nutrient K2O
Ammonium phosphate
sulphate
(16-20-0) 5618 899 1124
Diammonium phosphate
(18-46-0) 4816 867 2213
NPK compound
(20-10-10) 6400 1280 640 640
Sub Total 16834 3046 3977 640Grand Total 38989 5163 9556 6841
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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
StatisticsDivision
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.