SPATIAL ARRANGEMENT OF THE EGGS OF HYLEMYA BRASSICAE (BOUCHÉ), AND A SEQUENTIAL SAMPLING PLAN FOR USE IN CONTROL OF THE SPECIES
- 1 September 1967
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Plant Science
- Vol. 47 (5), 461-467
- https://doi.org/10.4141/cjps67-086
Abstract
Counts of eggs of Hylemya brassicae (Bouche) in cabbage did not conform to the Poisson distribution owing to a preponderance of uninfested and highly infested plants. But when the negative binomial series was fitted to the observed distribution, the discrepancies were not significant when tested by chi-square. The spatial pattern may be described by expansion of (q[long dash]px)-k with a common k of 0.95. Three methods of transformation stabilized the variance of field counts. A sequential sampling plan based on the negative binomial distribution and providing for 2 infestation classes was drawn up for use in control of the insect in the stem brassicas.This publication has 8 references indexed in Scilit:
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