2025/05/09 by Philip T Singbah, Jing Huang, Imtiaz Ahmed +8 · 1 voice
Agricultural and Biological Sciences · Materials Science · #Soil Carbon and Nitrogen Dynamics #Clay minerals and soil interactions #Soil Management and Crop Yield
paper · doi:10.1016/j.jafr.2025.101995
openalex publication_date 2025/05/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
Conceptual model comparing key findings: soil humus and aluminum-iron interactions; soil pH levels, carbon sequestration rate, and sustainable yield index of broad bean and sweet potato in granite, purple sandy shale, and Quaternary red soils under long-term rice straw return and NPK fertilization. Sizes of the arrows and lines reflect magnitude of effects on specific variables. • Humus carbon fractions distinctly regulated aluminum and iron concentrations in the three soils. • Straw with NPK fertilizer and single straw return increased SOC sequestration and crop yield • Sustainable yield index of broad bean increased with carbon sequestration rate, whereas that of sweet potato decreased • Granite soil had the highest SOC sequestration, yield sustainability, and humus-mediated regulation of aluminum and iron