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Title: Comparison of a degree-day computer and a recording thermograph in a forest environment.
Author: Wickman, Boyd E.;
Source: Res. Note PNW-RN-427. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 7 p
Publication Series: Research Note (RN)
Description: A field test showed that degree-days accumulated by a miniature computer and a recording thermograph in early spring and summer were comparable. For phenological studies the biophenometer was as accurate and more efficient than the hygrothermograph.
Keywords: degree days, phenology, temperature (-plants, field equipment, insect control
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Wickman, Boyd E. 1985. Comparison of a degree-day computer and a recording thermograph in a forest environment. Res. Note PNW-RN-427. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 7 p
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