Enhancing Phosphorus Efficiency in Calcareous Soils: Role of Polyphosphate Properties in Nutrient Solubility, Maize Nutrient Uptake, and Growth.

ABSTRACT: Polyphosphate, which can improve crop yield and phosphorus use efficiency in calcareous soils, has gained increasing global attention. However, the effects of polyphosphate properties (pH and polymerization degree) on agronomic effects are still unclear. In this study, the nutrient solubility, nutrient release, nutrient uptake, and maize growth in calcareous soil of alkaline diammonium phosphate (DAP), acidic ammonium polyphosphate (APP) with a polymerization degree of 1.8, and alkaline potassium tripolyphosphate (KTPP) with a higher polymerization degree of 2.8 were evaluated. The results showed that KTPP at pH 8.0 could significantly increase the solubility of Ca²⁺ by 24.3 times and 3.1 times than those by DAP and APP, respectively, and significantly increase the solubility of

SUBMITTER: Ji T 

PROVIDER: S-EPMC11800040 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature