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# Soil potassium deficiency and the threat to food security

Publication Date: 20.02.2024, 10:00

Soil potassium deficiencies affect approximately 20% of the world's agricultural lands, especially in South East Asia, Latin America, Sub-Saharan Africa, and East Asia.

The world faces a growing agricultural crisis: potassium, a vital nutrient for plant growth, is being removed from our soil. Potassium deficiencies now affect roughly 20% of the world’s arable land, and are particularly severe in regions such as South East Asia, Latin America, Sub Saharan Africa, and East Asia. The deficiencies are caused by soil nutrient mining, or agricultural practices which use up potassium more quickly than it can be replenished.

The potash market, which plays a critical role in the provision of potassium-rich fertilizers, has seen dramatic price fluctuations in recent years, including a 500% increase in 2022 alone. This volatility poses a challenge for farmers worldwide, particularly those in vulnerable communities, making it difficult to afford the necessary fertilizers to maintain crop yields. The global potash supply, dominated by exports from Russia and Belarus, which account for 42% of the world’s supply, has been further strained by import sanctions, exacerbating the issue.

Environmental and human rights concerns have also emerged around potash mining, which produces vast amounts of waste and has potential harmful effects on ecosystems and local communities. Despite these challenges, the global community lacks comprehensive policies or regulations for the sustainable management of soil potassium, leaving food production systems at risk.

In response, researchers have outlined six actions that would help to mitigate this crisis. These include assessing global potassium stocks, predicting price trends, defining optimal potassium levels for agriculture, evaluating environmental impacts, promoting a circular economy for potassium, and enhancing international cooperation. These measures aim to establish a foundation for policy development and ensure the sustainable management of potassium resources.

The urgency of the potassium shortage calls for immediate action from governments, researchers, farmers, and stakeholders to implement sustainable practices and policies. Such efforts are essential not only for securing global food production but also for preserving biodiversity and achieving a sustainable future.

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