2026-10-10T08:07:10Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34010727 2026-09-28T07:54:57Z category_575 portal_316 item_type_3 month_year_09_2026

Supplementary file 1_Nitrogen-centered nutrient innovation for decoupling agricultural productivity from greenhouse-gas intensity: evidence, limits, and implementation pathways.docx Bonface Ombasa Manono (25120755) Food Packaging, Preservation and Safety circular nitrogen recovery enhanced-efficiency fertilizers greenhouse-gas intensity integrated nutrient stewardship nitrogen-use efficiency site-specific nutrient management sustainable intensification yield-scaled nitrous oxide emissions <p>Increasing agricultural production while lowering greenhouse-gas (GHG) intensity is a defining challenge for climate-smart agrifood systems. This critical review evaluates nitrogen-centered nutrient innovations through a boundary-explicit, two-axis framework: evidence confidence for a stated productivity-GHG decoupling outcome and implementation readiness in a specified context. The synthesis covers enhanced-efficiency fertilizers (EEFs), biological nitrogen fixation (BNF), biological nitrification inhibition (BNI), site-specific nutrient management (SSNM), 4R stewardship, precision placement, digital decision support, circular nitrogen recovery, and integrated nutrient management (INM). Direct evidence requires paired crop-output and GHG data; nitrogen-use efficiency, fertilizer savings, nutrient-loss reduction, or soil-quality responses alone are classified as partial or supporting evidence. Evidence confidence is highest for locally calibrated SSNM, 4R rate-timing-placement practices, and selected EEFs in high-surplus or high-loss systems, although performance varies with crop, soil, climate, baseline nitrogen rate, and the measured boundary. Implementation readiness is high for established stewardship practices, moderate and context-dependent for EEFs, digital tools, recovered products, and BNI, and low for many nanofertilizers and non-legume microbial inoculants. Circular products may provide life-cycle benefits, but results depend on allocation, substitution, transport, energy, indirect N₂O, and avoided-waste assumptions. Short-term biogenic soil CO₂ flux is not treated as fossil climate forcing; soil-carbon benefits require stock-change measurements with defined depth, baseline, duration, and permanence. Evidence is concentrated in cereal and high-input systems, and publication, language, citation-selection, and outcome-reporting biases limit generalization. Reliable decoupling therefore requires integrated portfolios, transparent accounting, independent field validation, and performance-oriented policy rather than claims based on input reduction alone.</p> 2026-09-28T07:54:57Z Dataset Dataset 10.3389/fsufs.2026.1934315.s001 https://figshare.com/articles/dataset/Supplementary_file_1_Nitrogen-centered_nutrient_innovation_for_decoupling_agricultural_productivity_from_greenhouse-gas_intensity_evidence_limits_and_implementation_pathways_docx/34010727 CC BY 4.0