Because of the different altitudes of our country, there are different climatic conditions. As the great mountain ranges are placed on the Black Sea and Mediterranean coasts, most of the rest of the country has a semi-dry climate with low precipitation. In almost all of the country there is drought and need to the water in summer times. Topography  and climate specifications caused the use of different nutrients as fertilizers. One of the most important inputs for increasing agricultural production is nutrients as chemical and organic fertilizers.