Application thumb|Fertilizer sprayer thumb|Drone crop fertilizer thumb|Applying superphosphate fertilizer by hand, New Zealand, 1938 Fertilizers are commonly used for growing all crops, with application rates depending on the soil fertility, usually as measured by a soil test and according to the particular crop. Legumes, for example, fix nitrogen from the atmosphere and generally do not require nitrogen fertilizer.
Application thumb|Fertilizer sprayer thumb|Drone crop fertilizer thumb|Applying superphosphate fertilizer by hand, New Zealand, 1938 Fertilizers are commonly used for growing all crops, with application rates depending on the soil fertility, usually as measured by a soil test and according to the particular crop Legumes, for example, fix nitrogen from the atmosphere and generally do not require nit.rogen fertilizer.