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Spread of dwarfmistletoe into Jeffrey pine plantation..Author(s): Robert F. Scarpf; J.R. Parmeter
Source: Res. Note PSW-RN-141. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p
Publication Series: Research Note (RN)
Station: Pacific Southwest Research Station
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DescriptionA study at the Institute of Forest Genetics, Placerville. Calif . showed that dwarfmistletoe could spread from infected overstory ponderosa pine into planted Jeffrey pine--a maximum distance of about 145 feet. About one-third of the trees within this distance were infected after 22 years. The level of infection in the trees remained low. however and the parasite had intensified only slightly. Dwarfmistletoe did not appear to have affected height growth. Differences in degree of infection were noticed among blocks of trees from different altitudinal zones.
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CitationScarpf, Robert F.; Parmeter, J.R., JR. 1967. Spread of dwarfmistletoe into Jeffrey pine plantation... trees infected after 22 years. Res. Note PSW-RN-141. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p
KeywordsArceuthobium campylopodum, build-up (infection), disease control, dwarfmistletoe, Pinus jeffreyi, Pinus ponderosa, plantations, spread (infection}
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