Nutrient availability is an essential soil characteristic that should be continually monitored in agricultural applications. The most essential nutrients necessary for optimum plant growth are nitrogen (N), phosphorus (P), and potassium (K). Nitrogen is necessary for the vegetative plant growth phase since it is a primary element for proteins, DNA, and hormones. The growth phase is characterised by the lengthening of the trunk and an increased 250551_6production of foliage. Phosphorus is also found in DNA and is responsible for many physiological and biochemical processes. Furthermore, phosphorus stimulates root growth, blooming, and is necessary for the formation of seeds. Specifically, plants uptake phosphorus in the form of phosphate, while potassium is taken up by the plant in its elemental form. Potassium is used in protein synthesis and improves the quality of fruits and flowers. Maintaining the proper balance of these nutrients at different stages of plant development is a key component in farming applications and can be found on a variety of packaging of fertilisers labeled as NPK. For example, a growth stage fertiliser will have a high nitrogen number, while a fruit/flowering fertiliser will have a high phosphorous content number.