Why in news?
Researchers at the Central University of Rajasthan announced in September 2025 that they successfully grew wheat in desert sand using a “soilification” process. The breakthrough has the potential to turn arid dunes into fertile fields.
Understanding soilification
Soilification converts loose sand into a soil‑like medium by binding particles with natural polymers, adding organic matter and introducing beneficial microorganisms. The result is a stable, moisture‑retentive substrate suitable for plant growth without using topsoil from elsewhere.
How the technology works
- Bio‑polymer binder: A plant‑based polymer coats sand grains, creating aggregates that reduce water evaporation and improve moisture retention.
- Organic amendments: Compost, clay and silt provide nutrients and structure for roots to penetrate.
- Microbial inoculants: Beneficial bacteria and fungi enhance nutrient cycling and promote healthy root systems.
- Low water requirement: In trials, only three irrigations were needed for the entire season, yet the researchers harvested about 26 kilograms of wheat from 100 square metres of converted land.
Potential benefits
- Combating desertification: Turning sand into soil can halt the advance of deserts and restore degraded landscapes.
- Food and water security: The method reduces water use and can increase crop yields, helping arid regions meet food demand sustainably.
- Cost‑effectiveness: Locally sourced materials keep costs low, making adoption feasible for farmers.
- Environmental restoration: Soilification supports afforestation and habitat creation, promoting biodiversity.
Challenges and next steps
- Testing on a larger scale and with other crops like millets and pulses is needed to assess versatility.
- Long‑term impacts on soil ecology, groundwater and local biodiversity must be studied.
- Scaling up will require training farmers, community participation and government support.
- Integrating soilification with rainwater harvesting and agro‑forestry can create holistic solutions for desert regions.