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A SAMPLING PROGRAM DEVELOPED FOR POTATO LEAFHOPPER NYMPHS, EMPOASCA FABAE (HOMOPTERA: CICADELLIDAE), ON ALFALFA

Published online by Cambridge University Press:  31 May 2012

D. E. Simonet  and
R. L. Pienkowski
D. E. Simonet
Affiliation:
Department of Entomology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
R. L. Pienkowski
Affiliation:
Department of Entomology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
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Abstract

Populations of potato leafhopper nymphs were sampled in two alfalfa fields throughout the summers of 1976 and 1977 in Montgomery County, Virginia. A dichlorvos-carton sampling method was used to collect nymphs from 3-stem alfalfa bouquets. Instars were based on head capsule measurements. The spatial distribution of nymphs generally fit the negative binomial model. Based on this distribution pattern optimum sample sizes were computed. The nymphal population can be reliably estimated within 20% c.v. during most of the alfalfa growth period. Although most variation was shown to be between samples and not between areas in the field, samples should be taken at random over the entire area of the field under study.

Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 4 , April 1979 , pp. 481 - 486
Copyright
Copyright © Entomological Society of Canada 1979

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References

Anscombe, F. J. 1949. The statistical analysis of insect counts based on the negative binomial distribution. Biometrics 5: 165–173.CrossRefGoogle Scholar
Anscombe, F. J. 1950. Sampling theory of the negative binomial and logarithmic series distributions. Biometrika 38: 358–382.CrossRefGoogle Scholar
Bliss, C. I. and Fisher, R. A., 1953. Fitting the negative binomial distribution to biological data. Biometrics 9: 176–200.CrossRefGoogle Scholar
Cherry, R. H., Wood, K. A., and Ruesink, W. G.. 1977. Emergence trap and sweep net sampling for adults of the potato leafhopper from alfalfa. J. econ. Ent. 70: 279–282, with erratum.CrossRefGoogle Scholar
Cherry, R. H., Wood, K. A., and Ruesink, W. G.. 1977. Emergence trap and sweep net sampling for adults of the potato leafhopper from alfalfa. J. econ. Ent. 71: 164.Google Scholar
Decker, G. C. 1959. Migration mechanisms of leafhoppers. Proc. N. cent. Brch ent. Soc. Am. 14: 11–12.Google Scholar
Edwards, C. R. 1974. Leafhopper control on alfalfa. Purdue Univ. Coop. ext. Serv. Publ. E-36. 3 pp.Google Scholar
Fisher, R. A. 1941. The negative binomial distribution. Ann. Eugenics 11: 182–187.CrossRefGoogle Scholar
Harcourt, D. G. 1960. Distribution of the immature stages of the diamondback moth, Plutella maculipennis (Curt.) (Lepidoptera: Plutellidae), on cabbage. Can. Ent. 92: 517–521.CrossRefGoogle Scholar
Harcourt, D. G. 1961. Spatial pattern of the imported cabbageworm, Pieris rapae (L.) (Lepidoptera: Pieridae), on cultivated cruciferae. Can. Ent. 93: 945–952.CrossRefGoogle Scholar
Jarvis, J. L. and Kehr, W. R.. 1966. Population counts vs. nymphs per gram of plant material in determining degree of alfalfa resistance to the potato leafhopper. J. econ. Ent. 59: 427–430.Google Scholar
Kouskolekas, C. and Decker, G. C.. 1968. A quantitative evaluation of factors affecting alfalfa yield reduction caused by the potato leafhopper attack. J. econ. Ent. 61: 921–927.CrossRefGoogle Scholar
Latheef, M. A. and Harcourt, D. G.. 1973. A sampling plan for studies on the population dynamics of Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) on tomato. Ent. exp. appl. 16: 365–372.CrossRefGoogle 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
Ng, Y. S., Latheef, M. A., and Pass, B. C.. 1977. Estimation of egg populations of clover root curculio, Sitona hispidula (Coleoptera: Curculionidae) in Kentucky alfalfa and red clover fields. Can. Ent. 109: 1257–1263.Google Scholar
Pienkowski, R. L. and Medler, J. T.. 1964. Synoptic weather conditions associated with long-range movement of the potato leafhopper Empoasca fabae into Wisconsin. Ann. ent. Soc. Am. 57: 588–591.CrossRefGoogle Scholar
Rojas, B. A. 1964. La binomial negativa y la estimacion de intensidad de plagus en el suelo. Fitotecnia Latinameo 1: 27–36.Google Scholar
Simonet, D. E. and Pienkowski, R. L.. 1977. Sampling and distribution of potato leafhopper eggs in alfalfa stems. Ann. ent. Soc. Am. 70: 933–936.CrossRefGoogle Scholar
Simonet, D. E., Pienkowski, R. L., Martinez, D. G., and Blakeslee, R. D.. 1978. Laboratory and field evaluation of sampling techniques for the nymphal stages of the potato leafhopper on alfalfa. J. econ. Ent. 71: 840–842.Google Scholar
Southwood, T. R. E. 1966. Ecological methods with particular reference to the study of insect populations. Methuen, London. 391 pp.Google Scholar
Taylor, L. R. 1961. Aggregation, variance, and the mean. Nature 189: 732–735.CrossRefGoogle Scholar