How do microplastics affect food safety? Dr. Huerta Lwanga discusses the issue of plastic use in agriculture (fertilizer, compost, mulch, sludge etc.). Microplastics in soil affect soil life and crop growth; these plastic particles can additionally migrate through the soil food chain and eventually into the crops. Huerta Lwanga’s work has found that soil diversity and soil ecosystem services change due to the presence of microplastics. So, what does this mean for the environment and food safety?