This description is a very simplified example of the P cycle; we will now go into more detail. Decaying plant residues are not the only source of P in the soil. Manure and other organic residues (e.g.

a finding that uncovers a missing piece of Earth’s phosphorus cycle, which continues to puzzle scientists. Her study showed that iron oxide, a naturally occurring mineral in soils and sediments, can ...

Researchers looking into effective ways of adding phosphorus (P) to increase soil fertility have saved organic farmers a lot of time and money. In a recent paper in the Canadian Journal of Soil ...