Summary
Abstract Background and aims Perennial grass seed systems may promote soil organic carbon (SOC) storage through continuous plant cover, reduced tillage, and straw residue retention, yet few studies have explored the effects of field management practices on SOC stocks. Methods We measured SOC stocks (0–30 and 30–100 cm depth), particulate and mineral-associated organic carbon (POM and MAOM), microbial community structure, and plant biomass across 24 tall fescue seed fields of varying stand ages (2–20 years) and straw management practices (straw retention vs removal) in Oregon, USA. Results While SOC stocks did not differ among treatments at either depth, stand age and straw retention altered plant and biomass, and SOC partitioning. Specifically, older stands exhibited higher total field-lev
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