What is the main concern regarding long-term pesticide use?

The main concern regarding long-term pesticide use is the accumulation in the environment. Over time, repeated applications of pesticides can lead to their buildup in soil, water, and non-target organisms. This accumulation can have detrimental effects on ecosystems, including harming beneficial microorganisms and insects, affecting water quality, and disrupting food chains. Additionally, high concentrations of pesticides in the environment can lead to resistance among pest populations, making it harder to control them in the future. This long-term environmental impact underscores the importance of using pesticides judiciously and considering integrated pest management strategies that minimize reliance on chemical treatments. The focus on environmental sustainability and potential risks associated with chemical residues reinforces why long-term pesticide use is scrutinized in agricultural practices.