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Soil Remediation for Food Security and Environmental Health in Central Asia

Cleaning pesticide-contaminated soil through soil remediation is essential to sustainable development efforts in Central Asia.
by Nazalea Kusuma July 18, 2024
small green plant among healthy soil

Photo by paul mocan on Unsplash

Soil is more than just the ground we walk on. It is the foundation of many things, such as agricultural food production and habitats for humans and wildlife. Unfortunately, soil degradation is an ongoing issue, affecting one-third of global soils. Among the causes is pollution, particularly due to pesticides like in Central Asia. Hence, nursing the soil back to health through soil remediation is an important aspect of sustainable development.

Pesticide Pollution in Central Asia

More than 90% of pesticides used in conventional agriculture do not reach their targets. Instead, they become pollution, poisoning the soil and water long after the fact. Older pesticides—now mostly banned—tend to accumulate, posing long-term impacts on human health, food production, the ecosystem, and biodiversity loss.

For instance, the soil of the former Soviet Union’s land holds about half of the world’s obsolete pesticides. The region was once an agricultural center—especially for cotton—rife with pesticide application and oversupply. Nowadays, a large portion of that heavily contaminated land is in Central Asia.

“Due to a lack of experience and skill within the institutions and stakeholders responsible for managing pesticides and gaps in the legal frameworks in the region, proper pesticide lifecycle management has been overlooked,” said FAO Agriculture Officer Tania Santivanez.

Soil Remediation Projects

Beyond environmental health and human safety, returning contaminated soil back to its healthy origin is also key to sustainable agricultural food production. Soil remediation can be the answer to this cross-sectoral issue.

Soil remediation can be traced back to the early 20th century when industrialization began to threaten the environment. In essence, soil remediation is a method used to ‘clean’ contaminated soil by removing, immobilizing, or transforming pollutants in it. Even in some cases where the process cannot eliminate the contaminants completely, it can significantly reduce the risk of harm.

There are various soil remediation methods to apply, depending on the scale, the extent, the climate, etc. In Central Asia, addressing pesticide-contaminated soil is a large-scale project. Therefore, the solution must be economically sound as well as environmentally sustainable.

An example is the three-year-long project of soil remediation trials in Kazakhstan and Kyrgyzstan. Under the GEF (Global Environment Facility) and FAO (Food and Agriculture Organization), the trials utilize bioremediation and phytoremediation as the more sustainable and cost-effective large-scale solutions for lightly polluted soils. Bioremediation uses microorganisms to break down organic contaminants in the soil. Meanwhile, phytoremediation utilizes plants to remove them.

Healthy Soil for Sustainable Development

Clean soil is crucial for the safety of humans, animals, and other biodiversity that lives on it. Beyond that, healthy, nutrient-rich soil leads to resilient, nutrient-rich plant-based food. Therefore, sustainable soil management is also a matter of food security and nutrition. Restoring, maintaining, and improving the health of global soils cannot be an afterthought. Furthermore, besides large-scale solutions, smaller-scale efforts tailored to the conditions and needs of the area are also important. From local communities to national governments and international organizations, all relevant stakeholders can and should contribute to ensuring healthy soil for people and the planet.


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Nazalea Kusuma
Editor at Green Network Asia | Website |  + postsBio

Naz is the Manager of International Digital Publications at Green Network Asia. She is an experienced and passionate writer, editor, proofreader, translator, and creative designer with over a decade of portfolio. Her history of living in multiple areas across Southeast Asia and studying Urban and Regional Planning exposed her to diverse peoples and cultures, enriching her perspectives and sharpening her intersectionality mindset in her storytelling and advocacy on sustainability-related issues and sustainable development.

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