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Fertilisers; discuss Fertilisers are compounds of different nutrients given to plants with the intention of promoting growth; they are usually applied via the soil, for uptake by plant roots. Their primary purpose is to increase the rate at which photosynthesis occurs in different types of crops. To do this they add three major plant nutrients, potassium, nitrogen and phosphorus, as well as several secondary plant nutrients like calcium, magnesium and sulphur. 1 There are two different types of fertilisers. The first and the one in longest use is organic fertiliser. The most popular organic fertiliser is manure, which is made by compacting different layers of faeces, urine, hay, dirt and several other nutritious ingredients. The drawbacks with using organic fertilisers are that there is no means of telling how much of what nutrient is present. They also compete with heavy machinery which produces their Chemical counterpart. Inorganic fertilisers, however, are created by...

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