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Methods for Estimating Orchard Mite Populations, Especially with the Mite Brushing Machine1

Published online by Cambridge University Press:  31 May 2012

C. V. G. Morgan ,
D. A. Chant ,
N. H. Anderson  and
G. L. Ayre
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Extract

Phytophagous orchard mites have become so troublesome in British Columhia during the last decade that special attention has been given to studies on their ecology and control. An important prerequisite for such studies is an accurate and rapid method of estimating population densities of both the mites and their predators. As some mites are less than a fifth of a millimetre long, it is difficult to determine the numbers of adults present on foliage, quite apart from the eggs and other immature stages.

Methods for estimating orchard mite populations developed to date may be classified as either direct, in which the mites are counted on the leaves or estimated, or indirect, in which the mites are removed from the leaves and a known fraction is counted.

Type
Articles
Information
The Canadian Entomologist , Volume 87 , Issue 5 , May 1955 , pp. 189 - 200
Copyright
Copyright © Entomological Society of Canada 1955

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References

Austin, M. D., and Massee, A. M.. 1947. Investigations on the control of the fruit tree red spider mite (Metatetranychus ulmi Koch) during the dormant season. J. Pom. and Hort. Sci. 23: 227–253.Google Scholar
Baten, W. O., and Hutson, R.. 1943. Precautions necessary in estimating populations of small animals, J. Econ. Ent. 36: 501–504.CrossRefGoogle Scholar
Boudreaux, H. B. 1953. A simple method of collecting spider mites. J. Econ. Ent. 46: 1102–1103.CrossRefGoogle Scholar
Henderson, C. F., and McBurnie, H. V.. 1943. Sampling techniques for determining populations of the citrus red mite and its predators. U.S. Dept. Agr. Circ. 671.Google Scholar
Hoskins, W. M., Boyce, A. M., and Lamiman, J. F.. 1938. The use of selenium in sprays for the control of mites on citrus and grapes. Hilgardia 12: 115–175.CrossRefGoogle Scholar
Jones, L. S., and Prendergast, D. T.. 1937. Method of obtaining an index to density of field populations of citrus red mite. J. Econ. Ent. 30: 934–940.CrossRefGoogle Scholar
Newcomer, E. J. 1943. Apparent control of the Pacific mite with xanthone. J. Econ. Ent. 36: 344–345.CrossRefGoogle Scholar
Newell, I. M. 1947. Quantitative methods in biological and control studies of orchard mites. J. Econ. Ent. 40: 683–689.CrossRefGoogle ScholarPubMed
Summers, F. M., and Baker, G. A.. 1952. A procedure for determining relative densities of brown almond mite populations on almond trees. Hilgardia 21: 369–382.CrossRefGoogle Scholar
Venables, E. P., and Dennys, A. A.. 1941. A new method of counting orchard mites. J. Econ. Ent. 34: 324.CrossRefGoogle Scholar