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Freezing injury to sugar pine conesAuthor(s): Gilbert H. Schubert
Source: Research Note 96. Berkeley, CA: U.S. Department of Agriculture, Forest Service, California Forest and Range Experiment Station.
Publication Series: Research Note (RN)
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DescriptionEvidence that immature sugar pine cones are killed by severe late spring freezes was observed for the first time on the Stanislaus Experimental Forest in 1954. Although extremely low temperatures previously were suspected to have destroyed young sugar pine cones, no definite instances are known to have been reported heretofore.
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CitationSchubert, Gilbert H. 1955. Freezing injury to sugar pine cones. Res. Note 96. Berkeley, CA: U.S. Department of Agriculture, Forest Service, California Forest and Range Experiment Station. 2 p.
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