Mycorrhiza Reduces Phosphorus Uptake from Struvite in Rye (Secale cereale L.) Plants

Abstract To reduce dependency on inorganic phosphorus (P) fertiliser, secondary P fertilisers such as struvite are becoming more important. However, the uptake of these new by plants is often not known and may be enhanced plant associated microorganisms. We therefore investigated effect arbuscular mycorrhizae (AM) in rye ( Secale cereale L.), grown middle compartment a box with chambers separated 30 µm mesh allowing fungal hyphae but roots to penetrate. Plants or without (control) Rhizophagus irregularis ) were limited sand medium for 72 days. After harvest, analysed mycorrhizal colonization, shoot root development nutrient (P, Ca, Mg) uptake. Further, pH was measured each compartment. Shoot biomass both treatments different, significantly lower AM plants. Despite treatment being colonised mycorrhizae, their substantially compared control treatment, concentration higher. Even though control, water- CAL-extractable similar, indicating little from this Extractable reduced only which treatment. In conclusion, did increase Non-mycorrhizal invested into took up P. Graphical abstract