Distribution and Incidence of Laspeyresia Spp. Seedworm Infestation in Virginia, Loblolly and Shortleaf Pine Cones in the Southern States
In studies of the effects of insects on seed crops of southern pines one of the most difficult tasks is determining whether or not a specific insect,or insect group, is truly important. To date extensive surveys to evaluate relative importance of the various known insect pests of "flowers" and cones have been impractical both in terms of manpower available and of sampling procedures
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Author(s): B. H. Ebel
Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1971