Impact of pests on the white pine resource of Ontario
The importance of intensive management, including adequate pest control, is emphasized as vital to growing satisfactory white pine. The importance pests of white pine in Ontairo are white pine weevil (Pissodes strobi [Peck]), white pine blister rust (Cronartium ribicola J. C. Fisch.) and stem decay, caused primarily by "Phellinus pini." Annual losses caused by decay are ca. 221000 m3 in gross merchantable volume. Although decay in natural stands under 100 years of age is negligible, sites of injuries caused by weevils are favorable for infection by decay fungi, and adequate weevil control is necessary to keep decay levels low in plantations. Growth loss caused by weevils is ca. 8000 m3, and annual volume loss ca. 15400 m3, while an additional 15600 m3 of timber suffers a 25 percent loss in value caused by degrade associated with injuries caused by weevils. Growth loss estimated at 8000 m3, in the form of poorly stocked or totally devastated plantations, is caused by blister rust disease
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| Format: | biblioteca |
| Published: |
1985
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| Subjects: | ARBOLES FORESTALES, PINUS STROBUS, PISSODES STROBI, EUCOSMA GLORIOLA, APHROPHORA PARALLELA, PINEUS STROBI, ACANTHOLYDA ERYTHROCEPHALA, CRONARTIUM RIBICOLA, PHELLINUS PINI, PERDIDAS, RENDIMIENTO, ONTARIO, CANADA, |
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| Summary: | The importance of intensive management, including adequate pest control, is emphasized as vital to growing satisfactory white pine. The importance pests of white pine in Ontairo are white pine weevil (Pissodes strobi [Peck]), white pine blister rust (Cronartium ribicola J. C. Fisch.) and stem decay, caused primarily by "Phellinus pini." Annual losses caused by decay are ca. 221000 m3 in gross merchantable volume. Although decay in natural stands under 100 years of age is negligible, sites of injuries caused by weevils are favorable for infection by decay fungi, and adequate weevil control is necessary to keep decay levels low in plantations. Growth loss caused by weevils is ca. 8000 m3, and annual volume loss ca. 15400 m3, while an additional 15600 m3 of timber suffers a 25 percent loss in value caused by degrade associated with injuries caused by weevils. Growth loss estimated at 8000 m3, in the form of poorly stocked or totally devastated plantations, is caused by blister rust disease |
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