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- Title
SAMPLING CABBAGE APHID POPULATIONS ON BRUSSELS SPROUTS.
- Authors
Church, B. M.; Strickland, A. H.
- Abstract
This article presents field experiments on Cabbage aphid populations in relation to yield loss in commercial Brussels sprout crops, in England and Wales in 1951 and 1952. It was known that a reasonably accurate estimate of the numbers of aphids per plant could be obtained by visual counting on the host plant in the field, provided not more than about a hundred aphids were present. For routine sampling, the three-leaf method has the advantage of simplicity, and any bias will be trivial compared with the large changes in population which occur. When an estimate of the average aphid population density is required for a province or the whole country, the most economical way to collect the information may be to visit a large number of fields and to sample each field much less intensively than would be required to obtain an accurate estimate of its population density.
- Subjects
ENGLAND; WALES; INSECT population estimates; CABBAGE aphid; BRUSSELS sprouts; CABBAGE diseases &; pests
- Publication
Plant Pathology, 1954, Vol 3, Issue 3, p76
- ISSN
0032-0862
- Publication type
Article
- DOI
10.1111/j.1365-3059.1954.tb00699.x