Novel applications for Oxalate-Phosphate-Amine Metal-Organic-Frameworks (OPA-MOFs): Can an iron-based OPA-MOF be used as slow-release fertilizer

A novel hybrid material developed at Southern Cross University was investigated as fertiliser and soil modifying agent to address problems associated with acidification of agricultural soils. The compound, containing phosphorus, nitrogen and oxalate as structural elements, was tested in extended pot trials using wheat cv. Dollarbird. Its degradation, controlled by oxalate solubility and consumption by bacteria using it as carbon source to biomineralise carbonate, enables slow release of enclosed nutrients. Research objectives were met as trial results include increases in grain yield, protein content and micronutrient uptake, and presence of active oxalate degrading bacteria was confirmed.