The Impact of Insects on Second-Year Cone Crops in Red Pine Seed-Production Areas

William J. Mattson Jr.

Treesearch

The Impact of Insects on Second-Year Cone Crops in Red Pine Seed-Production Areas

Informally Refereed

Authors:

William J. Mattson, Jr.

Year:

1968

Type:

Research Note

Station:

Northern Research Station

Source:

Research Note NC-53. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

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Download (PDF 356 KB): https://research.fs.usda.gov/download/treesearch/11107.pdf

Abstract

Second-year cone crops in red pine seed-production areas have been severely damaged by five species of insects. Control of the two most destructive pests could increase present seed yields in most areas by at least 50 percent. Some seed-production areas may not produce harvestable seed crops until cone-insect populations are suppressed.

Keywords

Insects, red pine

Citation

Mattson, William J. 1968. The Impact of Insects on Second-Year Cone Crops in Red Pine Seed-Production Areas. Research Note NC-53. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station