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Proceedings of Past Forest Nursery Association Meetings:

Mycorrhizae and Realistic Nursery Management
Davey, C.B.
1990: Roseburg, OR
In the Pacific Northwest, when producing target seedlings
for reforestation of sites that have not been drastically dis-
turbed, there will likely be adequate mycorrhiza develop-
ment on the seedlings without the necessity of soil
inoculation in the nursery. This represents the majority of
seedlings being produced. However, problems in the
nursery can occur through excessive use of certain pesti-
cides, especially soil fumigants and fungicides. These may
require re-establishment of mycorrhizal fungi in the nurs -
ery soil. When growing seedlings for planting on drastic-
cally disturbed or inhospitable sites, or for planting on
natural grasslands, nursery inoculation may represent the
difference between success or failure. For the future, there
exists ample opportunity to significantly increase forest
productivity through matching tree genotypes with mycor-
rhizal fungus genotypes. At present, however, our knowl-
edge base is inadequate for taking full advantage of these
possibilities.
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