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Sequential sampling of ribes populations in the control of white pine blister rust (Cronartium ribicola Fischer) in CaliforniaAuthor(s): Harold R. Offord
Source: Res. Paper PSW-RP-36. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U. S. Department of Agriculture; 14 p
Publication Series: Research Paper (RP)
Station: Pacific Southwest Research Station
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DescriptionSequential sampling based on a negative binomial distribution of ribes populations required less than half the time taken by regular systematic line transect sampling in a comparison test. It gave the same control decision as the regular method in 9 of 13 field trials. A computer program that permits sequential plans to be built readily for other white pine regions is described.
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CitationOfford, Harold R. 1966. Sequential sampling of ribes populations in the control of white pine blister rust (Cronartium ribicola Fischer) in California. Res. Paper PSW-RP-36. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U. S. Department of Agriculture; 14 p
KeywordsCronartium ribicola, ribes surveys, sampling theory, sequential sampling, costs
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