Herbicide application is a research area focused on the use of chemical substances known as herbicides to control or eliminate unwanted vegetation, such as weeds, in agricultural, forestry, and landscaping settings. Research in this area seeks to develop effective and efficient methods for applying herbicides, including optimizing application rates, timing, and techniques to minimize environmental impact and maximize effectiveness. Additionally, research may also explore the development of new herbicides with improved selectivity and reduced toxicity to non-target organisms. Overall, the goal of herbicide application research is to help farmers and land managers manage weed populations and maintain healthy and productive landscapes.