5.3 understand the use of fertiliser to increase crop yield
Fertilisers are used to stimulate the growth of plants.
Fertilisers usually come in the form of phosphate and nitrates which are absorbed by plants through the soil.
Fertilisers can be divided into two groups: organic and artificial
Organic are usually waste from farming such as cow faeces.
artificial fertilisers can come in the chemical form of potassium nitrate or ammonium nitrate.
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