Soil testing is a process used to evaluate the health and fertility of soil in a particular area. It involves collecting samples of soil from different locations and analyzing them for their physical, chemical, and biological properties. This information is then used to determine the nutrient content of the soil, pH levels, and overall health of the soil. Soil testing can help farmers and gardeners make informed decisions about fertilization, crop selection, and other management practices to improve soil health and productivity. It is an important tool for sustainable agriculture and environmental management.