Influence of acidified-biochar on phosphorus and potassium availability in alkaline sandy soil.

ABSTRACT: Biochar application is recommended to enhance soil fertility, particularly in arid and semi-arid regions. In alkaline soils, acidifying biochar can help overcome high pH constraints and improve phosphorus (P) and potassium (K) availability. This study evaluated the effects of acidified palm frond (PF) and guava branch (GB) biochars on P and K availability in alkaline sandy soil through a controlled batch incubation experiment. Biochars were acidified using acetic or phosphoric acid and characterized for their chemical properties, surface morphology, and functional groups. A 15-week incubation was conducted using sandy alkaline soil pre-treated with 0.48 Mg ha-1 of superphosphate fertilizer. Acidified and unacidified PF and GB biochars were applied at rates of 2.4 and 4.8 Mg ha-1. PF biocha

SUBMITTER: Elbana TA 

PROVIDER: S-EPMC12368130 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature