EMPOWERING FARMERS TO IMPROVE SOIL HEALTH AND PROMOTE CARBON SEQUESTRATION REQUIRES INFORMATION, SUPPORT, AND RECOMMENDATIONS THAT ARE INDIVIDUALIZED AND ACCESSIBLE, YET ROUTINE. THROUGH THIS PROJECT, WE WILL SYNTHESIZE PRIOR SOIL HEALTH AND CARBON SEQUESTRATION RESEARCH RESULTS TO DERIVE OVERARCHING PRINCIPLES THAT WILL FORM THE BASIS FOR AN INDIVIDUALIZED RECOMMENDATION TOOL THAT MEETS THE DIVERSE NEEDS OF FARMERS, LANDOWNERS, AND MANAGERS IN HAWAII. A CUSTOM WEB HUB WILL TRANSLATE AND TRANSFER THAT SCIENTIFIC KNOWLEDGE FOR A NEW NETWORK OF STAKEHOLDERS INCLUDING FARMERS, RESEARCHERS, AND POLICYMAKERS, ETC. A WEB-BASED VOLUNTEER GEOGRAPHIC INFORMATION SYSTEMS PLATFORM WILL BE DEVELOPED TO 1) PROVIDE LOCALIZED SOIL INFORMATION AND CUSTOMIZED TREATMENT RECOMMENDATION; 2) COLLECT SPATIALLY-EXPLICIT SOIL SAMPLES, SOIL OBSERVATIONS AND FEEDBACKS FROM FARMERS TO MONITOR SOIL CONDITIONS; AND 3) FACILITATE KNOWLEDGE DISSEMINATION AND OUTREACH ACTIVITIES WITHIN FARMERS AND COMMUNITIES. THE APPROACH AND TOOL INFRASTRUCTURE, THAT SERVES AS BOTH A PREDICTIVE GUIDE FOR MANAGEMENT DECISION AND CERTIFIABLE MONITORING SYSTEM, WILL BE TRANSFERABLE TO OTHER SUBTROPICAL AND TROPICAL REGIONS, OR OTHER PLACES WITH SMALL-HOLDER FARMERS AND/OR HETEROGENEOUS LANDSCAPES. THE OUTPUT OF THIS PROJECT WILL SUPPORT IMPLEMENTATION OF NEW POLICY WITH ACCESSIBLE, SCIENCE-BASED RECOMMENDATION TOOLS, IMPROVE THE PREDICTIVE CAPACITY OF OUR SOIL HEALTH AND CARBON SEQUESTRATION TOOLS, AND MAXIMIZE OUR OUTREACH AND IMPACT THROUGH CROWD SOURCING AND VOLUNTARY DATA COLLECTION. FARMERS WILL IMPROVE VIABILITY OF THEIR COST STRUCTURE VIA ENHANCED SOIL QUALITY (I.E., IMPROVED NUTRIENT CYCLES AND WATER DYNAMICS) IN AGROECOSYSTEMS AND CERTIFIABLE CARBON SEQUESTRATION, THEREBY ENABLING FUTURE FARMER COMPENSATION FOR ECOSYSTEM SERVICES SUCH AS CLIMATE CHANGE MITIGATION.