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Effects of ectomycorrhizae removal on survival and growth of loblolly pine seedlings with Pisolithus or natural ectomycorrhizae on an upland site in South Carolina

Technical Report ·
OSTI ID:6441596
This study was undertaken to ascertain the significance of loss of ectomycorrhizae encountered during lifting of nursery seedlings to the capacity of the seedlings. Loblolly pine seedlings with abundant Pisolithus tinctorius (Pt) or naturally occurring (NI) ectomycorrhizae were nursery grown. Seedlings from the 2 groups were graded to similar sizes and either 100, 66, 33 or 0% of the ectomycorrhizae were removed to simulate degrees of roughness in machine handling of seedlings. The 8 treatments were outplanted on an upland site in a complete randomized plot design. Although the results are only preliminary at this time, they do indicate that seedlings with intact Pt ectomycorrhizae survive better, regenerate more roots, and initiate more height growth than seedlings with their roots stripped to different degrees. Generally, seedlings with Pt ectomycorrhizae are doing better than those with NI ectomycorrhizae. 1 table.
Research Organization:
Forest Service, Athens, GA (USA). Inst. for Mycorrhizal Research and Development
DOE Contract Number:
AI09-76SR00870
OSTI ID:
6441596
Report Number(s):
SRO-870-22; ON: TI85002224
Country of Publication:
United States
Language:
English