Nitrous oxide emissions after struvite application in relation to soil P status

Abstract Purpose Although struvite (MgNH 4 PO ·6H 2 O) is mostly considered to be a novel phosphorus (P) fertiliser, it does contain significant amount of nitrogen (N). Yet, relatively little known about the soil N dynamics in struvite-amended soils. Here, we focus on how application impacts emissions greenhouse gas nitrous oxide (N O), relation P status. Methods We conducted 54-day pot experiment two similar soils with different status (“low-P soil”; “high-P soil”) seeded Lolium perenne L. applied seven fertiliser treatments (Control; Struvite granules; powder; Urea; Triple superphosphate (TSP); TSP + granule; Urea). Except for unfertilised Control and treatments, rate was 150 kg N‧ha −1 . Nitrous fluxes, aboveground yield, plant uptake readily plant-available contents were measured. Results In low-P soil, none induced increase O emission compared control. high-P resulted lower than urea application, statistically not from control treatment. powder significantly increased both granular resulting yield conventional fertilisation (TSP Any also nitrate urea. Conclusion Our results suggest that can reduce risk gaseous losses without compromising agronomic performance. Pulverizing granules further promotes its dissolution, which could useful crops early nutrient needs.