RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

A New Cone Midge, Cecidomyia spp. Affecting Slash Pine Cones

In 1976, first-year slash pine (Pinus elliottii Engelm. var. elliottii) cones in a northeast Florida seed orchard developed hypertrophied scales. The same symptoms appeared again in 1977. Dissection of the distorted cones revealed an infestation by cone midge larvae. The 1976 damage was found on both trees treated with carbofuran (Furadan® ) and on untreated trees. In 1977, damage was observed on the same trees as well as Orthene ® -treated trees. Impact data is being obtained to evaluate the necessity for control measures.


Download this file:

PDF document Download this file — PDF document, 111Kb

Details

Author(s): Isodore L. Williams, Carl W. Fatzinger

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1977

Section: Session 2: Seed Orchard Technology