Influence of N-fertilized substrata on biometric parameters and nitrogen content of seedlings with Thelephora terrestris
Biometric parameters of Scots pine seedlings and nitrogen content in needles were investigated. The seedlings were inoculated in laboratory with an ectomycorrhizal fungus Thelephora terrestis and were grown in four different substrata treatments: S – nursery substratum, P – post-agricultural soil, SW – nursery substratum enriched by nitrogen, PW – post-agricultural soil enriched by nitrogen. After six months it was found, that seedlings from treatments with lower N content possessed higher values of parameters as well as the higher number of mycorrhizae. Irrespective of the type of substratum – nursery or agriculture one, the higher content of nitrogen was the cause of a much smaller proportion of fine roots.
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