Degrading soil threatens food security!
Every year more than 10 million ha worldwide are prone to soil degradation resulting in a loss of fertile topsoil that is worth about 40 billion US$. This is a serious threat to social stability in general and to food security in particular for large parts of Sub-Saharan Africa (SSA), South-America and South-East Asia. To halt and reverse this trend, dozens of projects and initiatives, ranging from national fertiliser subsidy programmes to local fertiliser demonstration trials have been implemented over the past decades, but they could not circumvent this trend in a satisfying way. Instead, the accumulation of nutrients in developed countries and the depletion of nutrients in developing countries is increasing and thereby soil fertility loss, and its consequences for food security, has become a global concern. Consequently, new approaches to maintain and improve the productive capacity of land are required.