Organic amendments are mostly applied pre-planting of cash or cover crops, and always contain carbon and all major nutrients (N, P, S and K).
Read this global scan and review, the first in a series, that covers what organic soil amendments are, why and how to use them, the effects on soils and crops, as well as other specific considerations. Further research, development and extension needs are also identified for future guidance.
Updated: December 2020
