| Title |
Struvite application to field corn decreases the risk of environmental phosphorus loss while maintaining crop yield |
| ID_Doc |
27512 |
| Authors |
Kokulan, V; Schneider, K; Macrae, ML; Wilson, H |
| Title |
Struvite application to field corn decreases the risk of environmental phosphorus loss while maintaining crop yield |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.agee.2024.108936 |
| Abstract |
Phosphorus (P) runoff from agriculture exacerbates eutrophication globally. Despite diverse mitigation options, the issue persists, necessitating the evaluation of slow -release fertilizers for crop production to minimize environmental P losses. Struvite, a P -rich, recycled product with low water solubility, holds promise for minimizing off -site environmental impacts. Nevertheless, the specific implications of adopting struvite remain uncertain, due to the limited information on the potential of struvite-based fertilizers to reduce P losses to the environment without compromising agricultural productivity under field conditions. A two-year field study was conducted in Ontario, Canada, to assess the agronomic potential and environmental implications of struvite application to field corn (Zea mays L.). Phosphorus fertilization strategies evaluated were a control treatment with no P supplements, a struvite treatment, a monoammonium phosphate treatment (MAP), and a blend of struvite and MAP (where struvite provided 25 % of the P, and MAP provided the remaining 75 %). Both struvite (11.4 Mg ha -1) and blend (11.5 Mg ha -1) treatments produced greater grain yields than the control (10.1 Mg ha -1) when averaged across the years. Grain yields from struvite and struvite/MAP blend treatments were statistically similar to that of MAP (10.7 Mg ha -1). However, the MAP treatment exhibited a greater vulnerability to P losses through runoff and leaching processes in both growing and non -growing seasons. Soil test P (Olsen and water -extractable P) concentrations remained consistently elevated for the MAP treatments relative to the control treatment. The results from plant, soil, and water components demonstrated the potential of struvite and struvite/MAP blends to support corn growth, while reducing environmental phosphorus losses. These findings are critical for implementing a circular economy within the agriculture sector and promoting the adoption of struvite as an alternative phosphate fertilizer. |
| Author Keywords |
Struvite; Soil phosphorus; Circular economy; Runoff; Leaching; Fertilizer |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001193819300001 |
| WoS Category |
Agriculture, Multidisciplinary; Ecology; Environmental Sciences |
| Research Area |
Agriculture; Environmental Sciences & Ecology |
| PDF |
https://doi.org/10.1016/j.agee.2024.108936
|