This bill, titled the "Biochar Research Network Act of 2025," directs the Secretary of Agriculture to establish a national biochar research network. This network will comprise up to 20 research sites or facilities, tasked with testing a wide range of biochar types across various soil conditions, application methods, and climatic regions. Its primary goals are to assess biochar's potential for soil carbon sequestration and to understand its productive use in climate mitigation, crop production, and enhancing resilience to extreme weather events. The research network's scope will cover agriculture, horticulture, rangeland, and forestry, investigating diverse feedstocks, production processes, and application treatments. Research will include both cross-site and mechanistic experiments to fill knowledge gaps regarding biochar's impact on soil properties, plant growth, and greenhouse gas emissions. It will also involve site-specific farm and forestry systems assessments to refine promising uses, sources, and application methods for biochar in particular regions, aiming to increase profitability and improve soil health. Key objectives include generating data to develop robust models, guide the design of efficient biochar and bioenergy production reactors, and validate testing methodologies for potential contaminants. The network aims to provide science-based, region-specific, and cost-effective information to farmers, ranchers, foresters, and other land managers. Administration will be led by the Agricultural Research Service, in partnership with other federal agencies, and the Natural Resources Conservation Service will coordinate the development of practice standards and conservation program support for biochar.