What is the term for mixing two or more pesticides together?

The term for mixing two or more pesticides together is "tank mix." This practice is commonly used in agricultural settings to combine the properties of different pesticides to enhance their effectiveness against a wider range of pests or to improve the application process. By creating a tank mix, applicators can save time and potentially reduce the number of applications needed, as different pesticides can target various pests or disease issues simultaneously. It is important to ensure compatibility and follow label directions when creating tank mixes to avoid adverse reactions that could reduce effectiveness or harm the environment.

Other terms such as preparation blend, pesticide fusion, and mixture application do not accurately reflect the standard terminology used in pest management practices. "Tank mix" is recognized in agronomy and pest management literature, making it the correct answer.