What Are Fertilizers Made of?

Answer

Fertilizers are mainly made up of nitrogen, phosphorous and potassium compounds. They also contain other secondary compounds of calcium, magnesium and sulphur, which are usually in smaller amounts. Fertilizers are usually added to the soil to supplement soil nutrients.
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What Is Fertilizer Made of?
All plants need nutrients to grow and, given good soil, sunlight and water, most are able to make their own food through photosynthesis. Fertilizers provide extra helpings of substances that encourage plants to excel in qualities gardeners desire.... More »
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Fertilizer is composed of nitrogen, phosphorus and potassium compounds. Ammonia is converted into Nitric acid by mixing it with air in the presence of a catalyst. Nitric acid and ammonia make ammonium nitrate by mixing them together Phosphorus is extracted from the phosphate rock and treated with sulphuric acid to produce phosphoric acid.
Homemade and commercial fertilizers are made of nitrogen, phosphorus and potassium (N-P-K) mixed in proportion to function with limestone and nitrates frequently added to act as soil conditioners. Fertilizers may be chemical, using phosphates and ammonia nitrates, granular urea or other chemicals and minerals while organic fertilizers use decaying plants, fish, bone or other animal waste. The first manufactured fertilizer was super-phosphate in early 19th century; made of bones and sulphuric acid.
Fertilizer can be made up of animal and plant manure or any mixture that helps put nutrients back into the soil. Fertilizers may be made from organic materials or materials. Some fertilizers are manufactured, while others are obtained directly from the earth.
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