Fertilizer management refers to the strategic application of nutrients to soil or crops in order to optimize plant growth and yield. This research area encompasses a wide range of topics, including nutrient requirements of specific crops, the use of different types of fertilizers (e.g. organic, inorganic, slow-release), techniques for measuring soil fertility levels, and methods for tracking and minimizing nutrient runoff and leaching into water sources. Effective fertilizer management is crucial for sustainable agriculture, as it helps to maximize crop productivity while minimizing negative environmental impacts. Researchers in this field may study the effects of different fertilizer application rates, timing, and placement methods on crop performance, soil health, and overall ecosystem health.