The interpretation of scarcity and the importance of resilience: An overlooked aspect of phosphorus supply security: A comment on Stamm et al. (2021).

We would like to comment on the article by Stamm et al. ([7]) concerning the phosphorus supply security in relation to scarcity and resilience of supply. 1 Long-term course of dry matter yield and phosphorus (P) removal of crops without fertilizer application as related to plots with optimal P supply (= 100%) at soil pH 6.0-6.4. However, it is an important aspect with regard to supply security of phosphorus so that dominance of reserves does not lead to dominance of supply of the market. [Extracted from the article]