|
ASCC |
Agricultural Support Services Company |
|
COIRPC |
Organization of Iranian Rural Cooperatives |
|
FUE |
Fertilizer use efficiency |
|
GNP |
Gross National Product |
|
OPFO |
Organization of Professional Fertilizer Producers |
|
SRIO |
Scientific Research and Industrial Organization of Iran |
|
SWRI |
Soil and Water Research Institute |
|
|
|
|
AS |
Ammonium sulphate |
|
DAP |
Diammonium phosphate |
|
MOP |
Muriate of potash (potassium chloride) |
|
NPK |
Compound fertilizer containing N, P and K |
|
SOP |
Sulphate of potash |
|
SSP |
Single superphosphate |
|
TSP |
Triple superphosphate |
|
|
|
|
N: |
Nitrogen |
|
P2O5 or P: |
Phosphate* |
|
K2O or K: |
Potash* |
* Phosphate and potash may be expressed as their elemental forms P and K or as their oxide forms P2O5 and K2O. Nitrogen is expressed as N. In this study, phosphate and potash are expressed in their oxide forms.
