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Title: HOST RANGE AND DISTRIBUTION OF A LONGIDORUS SP. ASSOCIATED WITH STUNTED LOBLOLLY PINE SEEDLINGS

Author
item FRAEDRICH, S - US FOREST SERVICE
item CRAM, M - US FOREST SERVICE
item Handoo, Zafar

Submitted to: Phytopathology Supplement; APSnet (Plant Pathology Online)
Publication Type: Abstract Only
Publication Acceptance Date: 6/27/2002
Publication Date: 7/27/2002
Citation: Fraedrich, S.W., Cram, M.M., Handoo, Z.A. 2002. Host range and distribution of a longidorus sp. associated with stunted loblolly pine seedlings. Phytopathology (supplement) 92: 526.

Interpretive Summary:

Technical Abstract: An undescribed Longidorus sp. has been associated with severely stunted loblolly pine seedlings at a Georgia nursery. Various crop and weed species were inoculated with 100 or 200 Longidorus per container to evaluate host range. Nematode soil populations increased in containers with slash, loblolly and longleaf pine seedlings. Longidorus reduced the dry root weights of slash (P=0.008) and loblolly (P=0.047) but not longleaf (P=0.095) pine compared to controls. Populations of Longidorus decreased on wheat, rye and sorghum as well as yellow and purple nutsedge. A survey conducted in and around the nursery detected a morphologically identical Longidorus sp. in loblolly and slash pine seed orchards that border the nursery. Thus far, Longidorus has not been found in red cedar windrows, an oak seed orchard or pine stands adjacent to the nursery.