What term describes two or more pesticides that cannot be effectively mixed together?

The term that describes two or more pesticides that cannot be effectively mixed together is "incompatible." When pesticides are incompatible, they do not combine well, which can lead to problems such as settling, phase separation, or the formation of harmful reactions that may reduce efficacy or even create toxic by-products.

Incompatibility can seriously undermine the effectiveness of a pesticide application, as the desired properties of the mixture may not be achieved. For instance, if one pesticide is intended to enhance the performance of another, but they are incompatible, it may result in decreased pest control and could lead to more significant environmental impacts or damage to crops.

Understanding the compatibility of pesticide mixtures is crucial in pest management, as it ensures that the applicator can achieve the best results while minimizing risks. This knowledge helps in making informed decisions about tank mixes, application methods, and overall management strategies for pest control.