Low Frankia inoculation potentials in primary successional sites at Mount St. Helens, Washington, USA

The ability of 23 year old volcanic soils from Mount St. Helens, USA, to nodulate actinorhizal Sitka alder (Alnus viridis ssp. sinuata) was studied by estimating Frankia Inoculation Unit density (FIU) in four types of primary successional communities using a host-plant bioassay. Rhizospheric Mycelia...

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