Nutrient Input

The quantity of nutrient which is supplied to a defined area. The unit area is usually expressed as m² or hectare and the quantity is determined from the application rate and the nutrient content of the fertiliser. For example, if a fertiliser has a Nitrogen content of 10% and the application rate is 35g/m², then the nutrient input is 3.5g/N/m², or 35kg/N/Ha. By contrast if a fertiliser had a particular nutrient content of 1.5% and this was applied at 25g/m², then the nutrient input is 0.375g/of nutrient/m², or 3.75kg/of nutrient/Ha.