Biochar seed coating and soil amendment for sustainable Pythium control

Overview

This solution focuses on the innovative use of plant-derived biochar as both a seed coating and soil amendment to naturally control soil-borne pathogens like Pythium species. Biochar, produced through pyrolysis, is applied as a seed coat or soil drench, leveraging its antimicrobial properties to reduce infection pressure and promote healthier early plant development. This approach offers a sustainable alternative to chemical treatments, addressing environmental toxicity while maintaining effective pathogen suppression.

Technical specifications

Key features:

• Biochar serves dual roles as a seed-priming agent and organic soil amendment.
• Applied as a seed coat using gum Arabic and fine biochar in a treating drum, following ISTA guidelines for coating density.
• Standardized soil application rates for biochar ensure consistent efficacy.
• Demonstrated pathogen suppression and enhanced plant growth in tomato studies.

Technology readiness level

This technology is at TRL 2, indicating that the concept is formulated and experimental proof of concept has been conducted. Further validation is planned to test efficacy against Pythium and other soil-borne pathogens in various crops.