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A photographic method and a ranking procedure for estimating numbers of the rose aphid, Macrosiphum rosae (L.), on rose buds
Author(s) -
Maelzer D. A.
Publication year - 1976
Publication title -
australian journal of ecology
Language(s) - English
Resource type - Journals
eISSN - 1442-9993
pISSN - 0307-692X
DOI - 10.1111/j.1442-9993.1976.tb01096.x
Subject(s) - rose (mathematics) , sampling (signal processing) , statistics , aphid , ranking (information retrieval) , mathematics , sequential sampling , horticulture , biology , botany , computer science , artificial intelligence , computer vision , filter (signal processing) , spatial distribution
Two sampling methods for aphids are described. The first is a photographic method that allows sampling with replacement for use in field experiments and in which a linear regression technique is used to estimate the errors of sampling. The second method is a ranking procedure for sampling natural populations in which regressions of aphid numbers on ‘colony length’ are used to minimize bias.