Synergistic effects of biochar-lime enhance acidic soil remediation and sustain peanut productivity under continuous cropping systems.

ABSTRACT: Soil acidification severely limits peanut productivity. Although lime and biochar can individually improve soil conditions, the effects are often short-lived. The combined effect of biochar and lime (BL) across multiple growing seasons remains unclear. This three-year field study investigated the synergy of biochar-lime co-application (BL) in remediating acidic soils and sustaining peanut yields under continuous cropping. BL was more effective than single amendments (BC/LM), operating through a dual mechanism: (1) Lime rapidly neutralized toxic aluminum (Ex-Al³⁺), while biochar helped retain Ca²⁺, prolonging the pH buffering effect and further reducing aluminum toxicity; (2) Biochar enriched soil microbial communities, which increased the activity of key enzymes involved in nutrient cyclin

SUBMITTER: Tu Q 

PROVIDER: S-EPMC12594868 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature