Which of the following are common signs of pesticide over-application?

Common signs of pesticide over-application include plant burn or wilting and excessive pest outbreaks. Over-application of pesticides often leads to phytotoxicity, which manifests as burning, yellowing, or wilting of the plants. This damage occurs because the chemical concentration is too high, causing toxicity to the plants that can impair their growth and health.

Additionally, when pesticides are over-applied, there can be an imbalance in the ecosystem. Beneficial insects that help control pest populations may be harmed, leading to an increase in pests because their natural predators are diminished or eliminated. This imbalance can result in excessive pest outbreaks, as there are fewer checks on pest populations.

In contrast, other signs such as excessive water usage and insect attraction are not directly tied to over-application but could be related to various factors influencing pest dynamics or plant health. Pest immunity and rapid plant growth are also not typical results of over-application; instead, they might suggest scenarios involving improper pest management or other cultivation issues. Lastly, while pest migration and reduced soil fertility are important agricultural concerns, they do not specifically indicate over-application of pesticides.