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méthode d'échantillonage séquentiel

International Journal of Tropical Insect Science (1)

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Spatial distribution of Maruca testulalis larvae on cowpea, and a sequential sampling plan for estimating larval densities
S. Firempong, H. Magalit
Journal:

Insect Science and Its Application / Volume 11 / Issue 2 / April 1990

Published online by Cambridge University Press:

19 September 2011, pp. 217-222

Print publication:

April 1990
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Larvae of Maruca testulalis were found to be randomly dispersed on flowers of cowpea cultivar Vita 1. Three models based on Taylor's power law, Lloyd's mean crowding and the negative binomial were tested to find out the best fit for developing a sequential sampling plan for this pod borer. Taylor's power law model gave the best fit whilst the negative binomial gave the least. A sequential sampling plan and a table of optimum sample size for use in the field were therefore developed, based on the random distribution.