MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202511100173 A) filed by Indian Council Of Agricultural Research, New Delhi, on Oct. 16, 2025, for 'steel slag-based soil conditioner compositions for acidic soil reclamation and heavy-metal remediation and method thereof.'
Inventor(s) include Dr. Bhupinder Singh; Dr. Chandan Kumar Gupta; Dr. K. Ushack; Dr. Shiv Prasad; Dr. Livleen Shukla; Dr. Archna Suman; Dr. Y. S. Shivay; Dr. B. S. Patil; Dr. Mallikarjuna B. P; Dr. M. Sivasamy; Dr. P Jayaprakash; Dr. T. Ramesh; Dr. A Balusamy; Dr. Mohammad Sahid; Dr. A. K. Nayak; Dr. Rubina Khanam; Dr. Rajeew Kumar; Dr. V. C Dhyani; Dr. Akhilesh Kumar; Dr. Rajiv Ranjan; Dr. Satish Kumar; Dr. Neeraj Kumar; Dr. Manoj Kumar; Dr. Anil Dhaka; and Dr. Vinod Goyal.
The application for the patent was published on Jan. 23, under issue no. 04/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a soil improvement material developed using steelmaking (LD) slag, which ameliorates soil acidity and also reduces the toxicity of heavy metals including Cr including its hexavalent form, Ni, Cd. Pb and As and can effectively improve the environmental safety of soil. The invention discloses the treatment of steel slag through physical, chemical and biological process to transform it into nutrient-holistic soil amendment to enhance the soil quality and reduction of toxic materials by developing steel slag-based soil conditioners that are enriched in terms of the essential mineral and possess a reduced Cr content when compared to the raw steel slag. The developed compositions have the ability to increase crop yield by 10-20%, reduce the requirement for conventional NPK fertilizers by up to 20%, and significantly lower the uptake of heavy metals such as arsenic and other toxic heavy metals in plant tissues."
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