What is a consequence of incompatible pesticide mixtures?

A consequence of incompatible pesticide mixtures is that they can cause clumping or clogging of nozzles. When different pesticides are mixed, they may react chemically or physically with one another, leading to precipitation or formation of solid particles. This can obstruct the flow through the spray nozzles, making it difficult to achieve an even application across the treated area. A clogged nozzle can result in uneven coverage, potential over-application in some spots and under-application in others, ultimately compromising the effectiveness of the pest control effort.

The other options, while addressing various characteristics of pesticides, do not accurately reflect the consequences of mixing incompatible products. For instance, incompatible mixtures generally do not increase effectiveness, reduce toxicity, or enhance absorption by plants. Instead, they can actually lead to reduced effectiveness due to the issues caused when mixing incompatible chemicals.