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Sampling plantations to determine white-pine weevil injuryAuthor(s): Robert L. Talerico; Robert W., Jr. Wilson
Source: Research Note NE-173. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.
Publication Series: Research Note (RN)
Station: Northeastern Research Station
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DescriptionUse of 1/10-acre square plots to obtain estimates of the proportion of never-weeviled trees necessary for evaluating and scheduling white-pine weevil control is described. The optimum number of trees to observe per plot is estimated from data obtained from sample plantations in the Northeast and a table is given. Of sample size required to achieve a standard error of the proportion of trees never weeviled of ± 0.05, a value that can be obtained at a reasonable cost for the purpose intended.
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CitationTalerico, Robert L.; Wilson, Robert W., Jr. 1973. Sampling plantations to determine white-pine weevil injury. Research Note NE-173. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.
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