Wpływ wzbogacenia gleby porolnej substratami organicznymi na strukturę zbiorowisk grzybów ektomykoryzowych sosny zwyczajnej

An assessment of ectomycorrhizal fungi associated with Pinus sylvestris L. growing on abandoned post−agricultural soil was performed. The seedlings were growing at three different treatments of soil amendments (harvest residue, bark compost and sawdust). As a control treatment, the soil without any amendments was used. The comparison of ectomycorrhizal structure done ten years after the application of organic substrates showed no significant changes in species richness level. The most frequent taxa, irrespective of the treatment, was Wilcoxina sp. The result seems to be connected with high nitrogen level in the soil. Ectomycorrhizae of Cortinarius sp. and Pinirhiza spp. dominated in all treatments. The results showed that species richness and abundance of live and dead mycorrhizae depend on soil conditions, which are similar on treatment and control plots.