Abstract
The solubility of six phosphate rocks (PRs) in organic acids was studied in order to increase phosphorus (P) availability of low-reactive PRs to crops. One gram of PR was incubated with 25 mL of 100 mM solution of ten low molecular-weight aliphatic organic acids and sulfuric acid for 3 days at 28{\textdegree}C. Tartaric, sulfuric and oxalic acid solubilized 31 -- 34%, 30 -- 37% and 18 -- 26% of total P, respectively, but other acids dissolved less than 13% of the total P. Ca concentration in the solution at equilibrium was highest in citric acid and lowest in tartaric acid, indicating that Ca exclusion from the solution accelerated P release from the PRs.
Cite
CITATION STYLE
Sagoe, C. I., Ando, T., Kouno, K., & Nagaoka, T. (1997). Effects of organic-acid treatment of phosphate rocks on the phosphorus availability to Italian ryegrass. In Plant Nutrition for Sustainable Food Production and Environment (pp. 619–624). Springer Netherlands. https://doi.org/10.1007/978-94-009-0047-9_197
Register to see more suggestions
Mendeley helps you to discover research relevant for your work.
