Fertilizer is any natural or unnatural substance that is added to the soil or plant tissue to provide one or more nutrients needed for plant growth. In order for the soil not to be deficient in many nutrients, it will be very useful to use fertilizer.
Fertilizers are classified in several ways. They can be classified by having only one nutrient (for example, potassium, phosphorus, or nitrogen), in which case they are called “direct fertilizers.”
Inorganic or chemical fertilizers remove carbon-containing materials, except urea.
Fertilizers are applied to the soil in liquid and solid form. About 90% of these fertilizers are applied in solid form.
- Urea
- Ammonium Sulfate
- Potassium Sulfate