Composting City Waste: How It Affects Wheat and Our Health

You might think turning waste into fertilizer is a brilliant idea, but what's the long-term impact? Let's dive into wheat fields treated with different compost types - chicken manure (CM), sewage sludge (SSC), and domestic waste (DWC). Research shows these boost heavy metals (HMs) in the soil. For example, CM ramps up Cd, Cr, Cu, and Zn by 29-38%, while SSC increases Cd, Cr, Hg, As, Cu, and Zn by 18-35%. Yet, these metals don't significantly transfer to wheat grains, keeping them safe to eat. It’s like adding more flavor to soil, but the bread remains the same! Interestingly, these heavy metals don't cross over into the wheat grains, meaning your daily loaf is still safe to consume. But how does this affect the soil in the long run? And what about other crops? There’s more to explore in the world of organic fertilizers and their impacts on both our food and the environment.