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    Author(s): M.M. Cram; S.W. Fraedrich; J. Fields
    Date: 2003
    Source: In: Riley L.E., Dumroese R.K., Landis T.D., technical coordinators. National Proceedings: Forest and Conservation Nursery Associations—2002. Ogden, UT: USDA Forest Service, Rocky Mountain Research Station. Proceedings RMRS-P-28: 26–30. Available at: http://www.fcnanet.org/proceedings/ 2002/cram.pdf
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (827 KB)

    Description

    An undescribed needle nematode (Longidorus sp.) was consistently associated with stunted loblolly pine seedlings at the Flint River Nursery in south Georgia. Seedlings in affected areas had root systems that were greatly reduced in size, and lacked lateral and fine roots. In a growth chamber experiment, the needle nematode significantly reduced the size of loblolly pine root systems in containers initially infested with 100 and 200 nematodes. Populations of the needle nematode increased in all containers during the course of the experiment. Slash and longleaf pines have also been found to be hosts for the needle nematode. Cover crops typically used at the nursery, including sorghum, wheat and rye, were not found to be hosts. Yellow nutsedge was also not a host. A survey conducted in pine seed orchards that border the nursery indicated that 37% of the soil samples were positive for the needle nematode. The nematode was not found in redcedar windrows, an oak seed orchard, and pine stands adjacent to the nursery.

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    Citation

    Cram, M.M.; Fraedrich, S.W.; Fields, J. 2003. Stunting of southern pine seedlings by a needle nematode (Longidorus sp.). In: Riley L.E., Dumroese R.K., Landis T.D., technical coordinators. National Proceedings: Forest and Conservation Nursery Associations—2002. Ogden, UT: USDA Forest Service, Rocky Mountain Research Station. Proceedings RMRS-P-28: 26–30. Available at: http://www.fcnanet.org/proceedings/ 2002/cram.pdf

    Keywords

    Pinus taeda, Pinus elliottii, Pinus palustris, fumigation, seedling stunting

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https://www.fs.usda.gov/treesearch/pubs/5443