What can be an effect of pesticide over-application?

The impact of pesticide over-application can be significant and concerning, especially for non-target organisms and the broader environment. When pesticides are applied in excess of the recommended rates, they can cause unintended harm. This includes the potential for toxicity to beneficial insects, like pollinators, as well as to wildlife, aquatic life, and plant species that are not intended to be affected by the application. Over-application can lead to pollution of soil and water resources, disrupting ecosystems and diminishing biodiversity.

In contrast to this, increased effectiveness of the pesticide, lowered costs, or more effective pest control are not outcomes associated with over-application. In fact, over-application can lead to pest resistance, making control less effective over time and resulting in higher costs due to the need for more frequent applications or stronger chemicals. This highlights the importance of integrated pest management practices and the need for careful adherence to recommended application rates to protect our environment while effectively managing pests.