Résultat de la recherche
43 recherche sur le mot-clé 'Echantillonnage binomial'
article/chapitre/communication
G. Schaalje ; R. Butts | 1992article/chapitre/communication
Binomial sequential classification sampling plans were developed for use in classifying populations of Thrips palmi Karny, below or above a mean intervention threshold density (m(IT)) for management decision making on the fall potato on Cheju Is[...]article/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. Tonhasca ; J. Palumbo ; D. Byrne | 1994Early season infestations of the sweet potato whitefly, Bemisia tabaci (Gennadius), on cantaloupes, Cucumis melo L., were determined by counts of the number of adults per leaf in fields near Yuma, Arizona. We used these data to develop binomial [...]article/chapitre/communication
E. Trumper ; J. Gyenge | 1998Binomial sampling plans were developed for Therioaphis trifolii (Monnell) (Homoptera; Aphididae), one of the most damaging insect pests of alfalfa crops in Argentina. During 1995, 50 stems from each of six alfalfa fields were sampled on each of [...]article/chapitre/communication
M. Feng ; R. Nowierski ; Z. Zeng | 1994Binomial sequential classification sampling plans were developed for use in classifying populations of the Russian wheat aphid, Diuraphis noxia (Mordvilko), below or above a mean intervention-threshold density (m(IT)) for management decision mak[...]article/chapitre/communication
N. Elliott ; R. Kieckhefer ; D. Walgenbach | 1990article/chapitre/communication
D. Legg ; R. Nowierski ; M. Feng ; F. Peairs ; G. Hein ; L. Elberson ; J. Johnson | 1994A sequential-interval procedure was developed to calculate upper and lower stop values of binomial sequential sampling models for the Russian wheat aphid, Diuraphis noxia (Kurdjumov), infesting small grains. This procedure was developed for econ[...]article/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
F. Fournier ; G. Boivin ; R. Stewart | 1994Transient differences in onion thrips (Thrips tabaci) densities were observed between the margins and the centre of some onion (Allium cepa) fields. Onion thrips populations consist in aggregates contagiously dispersed within onion fields. Two t[...]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
J. Cheshire ; J. Funderburk ; D. Zimet ; T. Mack ; M. Gilreath | 1989article/chapitre/communication
L. Wright ; W. Cone ; G. Menzies ; T. Wildman | 1990article/chapitre/communication
M. Binns ; N. Bostanian | 1990