This is a Sources Sought Notice for market research, not a solicitation. The USDA ARS is seeking an automated, UTV-mounted soil sensor probe capable of measuring in-situ soil carbon content to at least 12 inches deep and geo-referencing each data point. The purpose is to identify qualified Small Business, HUBZone, Women-Owned, or Service-Disabled Veteran-Owned Small Business contractors for a potential future project. Interested companies should submit a brief Capabilities Statement demonstrating relevant expertise and their business size status. No specific budget, performance location, or project timelines are provided in this preliminary notice.