Nonlethal Thrips Damage to Slash Pine Flowers Reduces Seed Yields

Gary L. DeBarr; John A. Williams

Treesearch

Nonlethal Thrips Damage to Slash Pine Flowers Reduces Seed Yields

Informally Refereed

Authors:

Gary L. DeBarr, John A. Williams

Year:

1971

Type:

Research Note

Station:

Southern Research Station

Source:

Res. Note SE-160. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 4 p.

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Download (PDF 138 KB): https://research.fs.usda.gov/download/treesearch/4605.pdf

Abstract

Nonlethal damage to female flowers of slash pine (Pinus elliottii Engelm.) by a thrips, Gnophothrips fuscus Morgan, was examined a Florida seed orchard. Thrips-damaged flowers developed into crooked mature cones with areas of sunken, deformed cone scales. Damaged cones were significantly shorter, yielded fewer total seed and filled seed per cone, and opened more poorly than undamaged cones.

Citation

DeBarr, Gary L.; Williams, John A. 1971. Nonlethal Thrips Damage to Slash Pine Flowers Reduces Seed Yields. Res. Note SE-160. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 4 p.