Résultat de la recherche
15 recherche sur le mot-clé
'Sequential sampling' 
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J. Regniere ; B. Boulet ; J. Turgeon | 1988article/chapitre/communication
C. Hollingsworth ; C. Gatsonis | 1990article/chapitre/communication
Binomial sequential sampling plans, based on Wald's sequential probability ratio test, were developed for adult female twospotted spider mites, Tetranychus urticae Koch, on main stem hop leaves at the 2 m elevation for early season sampling and [...]article/chapitre/communication
Binomial sequential sampling plans usually are more efficient than sampling plans based on counting the number of insects per sample. Our objective was to develop robust binomial sequential sampling plans based on a range of action thresholds fo[...]article/chapitre/communication
K. Giles ; T. Royer ; N. Elliott ; S. Kindler | 2000From 1997 to 1999, Schizaphis gramintum (Rondani), intensity (number per tiller) was estimated on 115 occasions from hard red winter wheat fields located throughout the major wheat growing regions of Oklahoma. A total of 32 and 83 fields was sam[...]article/chapitre/communication
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G. Boivin ; J. Le Blanc ; J. Adams | 1991article/chapitre/communication
J. Palumbo ; W. Fargo ; E. Bonjour | 1991article/chapitre/communication
R. Weinzierl ; R. Berry ; G. Fisher | 1987article/chapitre/communication
S. Naranjo ; H. Flint ; T. Henneberry | 1996We used an empirical relationship to develop models for estimating and for classifying the population density of adult Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) in cotton based on the proportion of infested leaves. We examined models b[...]article/chapitre/communication
A. Stewartoaten | 1996I discuss the estimation of the abundance of a biological population, its logarithm, and the variances of these estimates, from a sequential sampling scheme with minimum and maximum sample sizes. Observations are counts of organisms in randomly [...]article/chapitre/communication
G. Maiteki ; R. Lamb | 1987article/chapitre/communication
R. Butts ; G. Schaalje | 1994Current methods of characterizing spatial distributions of insects were applied to Russian wheat aphid, Diuraphis noxia (Mordvilko), data in winter wheat, Triticum aestivum L., plants sampled in the fall to derive information about the biology o[...]
