Replacing fused calcium-magnesium phosphate with diammonium phosphate increases exchangeable aluminum in acidic sugarcane (Saccharum officinarum L.) soils.

ABSTRACT: Recently, Diammonium phosphate (DAP, (NH₄)₂HPO₄) has gradually replaced fused calcium-magnesium phosphate (FCMP) as the primary source of phosphorus in sugarcane fields in China. FCMP is a thermally processed phosphate fertilizer primarily containing α-Ca₂(PO₄)₂ and CaMgP₂O₇. Despite its possible impacts on sustainable sugarcane production, the effect of this substitution on accelerating soil acidification has not yet been investigated. In this study, a three-year-long experiment was performed in Tuolu Town of Jiangzhou District, and field experiments were conducted with five treatment groups with different substitution ratios of DAP replacing FCMP (0%, 25%, 50%, 75%, and 100% of P₂O₅

SUBMITTER: Zhang H 

PROVIDER: S-EPMC12639023 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature