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ESTIMATION OF EGG POPULATIONS OF THE CLOVER ROOT CURCULIO, SITONA HISPIDULA (COLEOPTERA: CURCULIONIDAE), IN KENTUCKY ALFALFA AND RED CLOVER FIELDS1,2

Published online by Cambridge University Press:  31 May 2012

Y. S. Ng ,
M. A. Latheef  and
B. C. Pass
Y. S. Ng
Affiliation:
Department of Entomology, University of Kentucky, Lexington 40506
M. A. Latheef
Affiliation:
Department of Entomology, University of Kentucky, Lexington 40506
B. C. Pass
Affiliation:
Department of Entomology, University of Kentucky, Lexington 40506
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Abstract

Sampling techniques for estimating egg populations of the clover root curculio, Sitona hispidula (F.), were developed in alfalfa and red clover fields in Kentucky. An appropriate sample unit was a 3 × 3 in. (7.6 × 7.6 cm) area of plants and the soil beneath it to a depth of 4–5 in. (10.2–12.7 cm). This was processed by a flotation technique. The spatial disposition of the eggs conformed to a clumped pattern in both fields. The variation of 88 to 93% in log variances was accounted for by the variation in log means. There were no significant differences in dispersion pattern between the two crops. Variance analysis revealed that block and plot differences were rarely significant but the interquadrat variance predominated. The number of samples required to estimate the population with specified level of significance and margin of error was inversely proportional to population density.

Type
Articles
Information
The Canadian Entomologist , Volume 109 , Issue 9 , September 1977 , pp. 1257 - 1263
Copyright
Copyright © Entomological Society of Canada 1977

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References

Bigger, J. H. 1930. Notes on the life history of the clover root curculio, Sitona hispidula (Fab.) in central Illinois. J. econ. Ent. 23: 334–341.CrossRefGoogle Scholar
Cochran, W. G. 1967. Sampling techniques. 6thprinting, John Wiley, New York, London, Sydney. 413 pp.Google Scholar
Danthanarayana, W. 1966. Extraction of arthropod eggs from soil. Ent. exp. appl. 9: 124–125.CrossRefGoogle Scholar
Harcourt, D. G. 1969. The development and use of life tables in the study of natural insect populations. A. Rev. Ent. 14: 175–196.CrossRefGoogle Scholar
Healy, M. J. R. and Taylor, L. R.. 1962. Tables for power-law transformations. Biometrika 49: 557–559.CrossRefGoogle Scholar
Horsfall, W. R. 1956. A method for making a survey of flood water mosquitoes. Mosquito News 16: 66–71.Google Scholar
Jewett, H. H. 1934. The clover root curculio. Circ. Ky. agric. Exp. Stn 42: 13–23.Google Scholar
Morris, R. F. 1955. The development of sampling techniques for forest insect defoliators, with particular reference to the spruce budworm. Can. J. Zool. 33: 225–294.CrossRefGoogle Scholar
Morris, R. F. 1960. Sampling insect populations. A. Rev. Ent. 14: 175–196.Google Scholar
Morrison, W. P. et al. 1974. The literature of arthropods associated with alfalfa II. A bibliography of the Sitona sp. (Coleoptera:Curculionidae). Biol. Notes Ill. nat. Hist. Surv. 88. 24 pp.Google Scholar
Mukerji, M. K. 1973. The development of sampling techniques for populations of the tarnished plant bug, Lygus lineolaris (Hemiptera: Miridae). Researches Popul. Ecol. Kyoto Univ. 15: 50–63.Google Scholar
Philips, W. G. and Ditman, L. P.. 1962. Biology and economic importance of the clover root curculio, Sitona hispidula (Fab.) in Maryland. Bull. Md agric. Exp. Stn A-121. 21 pp.Google Scholar
Sukhatme, P. V. and Sukhatme, B. V.. 1970. Sampling theory of surveys with applications. Vol. 2. Iowa State University Press, Ames. 452 pp.Google Scholar
Taylor, L. R. 1961. Aggregation, variance and the mean. Nature (Lond.) 189: 732–735.CrossRefGoogle Scholar
Thompson, L. S. and Willis, C. B.. 1967. Distribution and abundance of Sitona hispidula (F.) and the effect of insect injury on root decay of red clover in the Maritime Provinces. Can. J. Pl. Sci. 47: 435–440.CrossRefGoogle Scholar
Underhill, G. W. et al. 1955. Control of the clover root curculio on alfalfa with notes on life history and habits. J. econ. Ent. 48: 184–187.CrossRefGoogle Scholar
Waldbauer, G. P. and Kogan, M.. 1973. Sampling for bean leaf beetle eggs: Extraction from the soil and location in relation to soybean plant. Environ. Ent. 2: 441–446.CrossRefGoogle Scholar