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Sökning: swepub > Umeå universitet > Annan publikation > Hurry Vaughan

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  • Schneider, Andreas N., et al. (författare)
  • Organic N Addition Improves Root Growth Without Changing Fungal Communities in Outplanted Conifer Seedlings
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Forestry in Sweden largely relies on planting genetically improved seedlings after clear-cutting, and high survival and early growth of planted seedlings is vital for economic viability and carbon sequestration. Norway spruce (Picea abies) and Scots pine (Pinus sylvestris) are the two most important tree species in Swedish forest stands and are both associated with a variety of ectomycorrhizal fungi. Fertilization with arginine phosphate has been shown to improve root growth and seedling survival, but it is not clear how small-scale addition of fertilizer affects fungal community composition of growing seedlings. Here we show that addition of arginine phosphate can improve root growth of planted seedlings without negatively affecting survival or changing fungal community composition. In a planting experiment sampled after one and two growing seasons, we found that planting position had significant effects both on seedling performance and fungal community composition and provide insight into the early stages of fungal community succession on planted Norway spruce and Scots pine seedlings. Fungal taxa present on seedlings before planting persisted on seedling roots, while at the same time site indigenous taxa colonized the growing seedlings. Fertilization modified relative abundances of some fungal taxa but did not lead to significant changes in community composition. While we acknowledge the need for more studies in different microclimates, soil types and weather conditions, and over longer timeframes, our results demonstrate how targeted fertilization with organic N can increase root growth, in addition to providing further insight into the early stages of fungal community succession in Fennoscandian rotation forestry.
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  • Resultat 1-10 av 14

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