What best management practice helps prevent contamination of surface water and groundwater by pesticides?

Implementing Integrated Pest Management (IPM) principles is essential for preventing contamination of surface water and groundwater by pesticides. IPM is a holistic approach that combines various management strategies to control pests while minimizing the use of chemical pesticides. This method encourages practices such as monitoring pest populations, using pest-resistant plant varieties, and employing cultural controls to manage pest issues. By focusing on prevention and addressing the root causes of pest problems, IPM reduces the reliance on chemical applications, consequently decreasing the potential for pesticide runoff into water sources.

Utilizing more pesticides, applying them at night, or storing them indoors do not inherently address the root causes of pest problems or mitigate risks associated with pesticide runoff. Therefore, following IPM principles remains the most effective management practice for protecting water quality while managing pest populations.