Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-28T06:20:03.737Z Has data issue: false hasContentIssue false
  • English
  • Français

Dispersion patterns, sample unit-sizes and techniques for sampling cotton jassid [Amrasca biguttula biguttula (Ishida)] and whitefly (Bemisia tabaci, Genn.)*

Published online by Cambridge University Press:  19 September 2011

A. K. Charravarthy  and
P. K. Ananda Rao
A. K. Charravarthy*
Affiliation:
Departments of Entomology and Plant Breeding, Punjab Agricultural University, Ludhiana-141 004, India
P. K. Ananda Rao
Affiliation:
Departments of Entomology and Plant Breeding, Punjab Agricultural University, Ludhiana-141 004, India
*
† To whom correspondence should be addressed: Regional Research Station, Mudigere-577 132, India.
Get access

Abstract

Spatial dispersion of the nymphs of the jassid, Amrasca biguttula biguttula (Ishida), and the adults of the whitefly, Bemisia tabaci Genn. on F414, a Gossypium hirsutum variety, was systematic in Ludhiana (Punjab). Both the jassid and the whitefly displayed no definite pattern along the height of the plant, though a maximum number of whiteflies were recorded at middle canopy (21–40 cm from bottom). Sample sizes of 10–15 plants, selected in a statistically linear fashion represented populations of jassid nymphs and adult whitefly on all four varieties. Sampling jassid nymphs by visual counting and whitefly by split-cage were the most suitable sampling methods for local cotton growers among the various methods compared.

Résumé

La distribution spatiale des nymphes jassids Amrasca biguttula biguttula (Ishida) et le whitefly adult (Bemisia tabaci, Genn.) sur la variété F414, a hirsutum était uniforme a Ludhiana (Punjab). Le jaseis aussi bien que le whitefly ne manifestaient anoun échantillon le long de la hauteur de la plantes bien que. Un maximum nombre de whiteflies ont été remarques au dalis central (21–40 cm du bas). Des échantillons de 10–15 plantes, sélectionnés d'une façon liveaive, représentaient statistiquement des populations des nymphes jassids et whitefly adult surtoutes les quatre variétés. Le chantionnage des nymphes jassids en les comptant visuellement et des whiteflies par “split-cage” était le plus convenable pour les cultivateur du coton a Ludhiana parmi les méthodes comparées.

Keywords

Spatial dispersionsample sizesampling methodcottonjassidwhitefly
Type
Articles
Information
International Journal of Tropical Insect Science , Volume 6 , Issue 6 , December 1985 , pp. 661 - 665
Copyright
Copyright © ICIPE 1985

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

*

Part of a Ph.D. thesis submitted to Department of Entomology, Punjab Agricultural University, Ludhiana, India.

References

Afzal, M. and Ghani, M. A. (1953) Cotton jassid in the Punjab. Sci. Monogr. Pakistan Ass. Advance. Sci. No. 2.Google Scholar
Allen, J. D. G. and Gokhale, D. V. (1972) Sequential sampling plans for the boolworm, Heliothis zea. Environ. Ent. 7, 771–780.CrossRefGoogle Scholar
Arbous, A. G. and Kerrich, J. E. (1951) Accident statistics and concept of accident proneness. Biometrics. 7, 340–432.CrossRefGoogle Scholar
Byerly, K. F., Gutierrez, A. P., Jones, R. E. and Luck, R. F. (1978) A comparison of sampling methods for some arthropod populations in cotton. Hilgardia. 46, 257–282.CrossRefGoogle Scholar
Dyck, V. A. (1980) Sampling techniques for important rice pests. Paper presented at workshop on Integrated Pest Control in Rice, September 22–27, Yogyakarta, Indonesia.Google Scholar
Ingram, W. R. and Green, S. M. (1972) Sequential sampling for bollworms on rain grown cotton in Botswana. Cotton Grow. Rev. 49, 265–275.Google Scholar
Kuehl, R. O. and Fye, R. E. (1972) An analysis of the sampling distributions of cotton insects in Arizona. J. econ. Ent. 65, 855–860.CrossRefGoogle Scholar
Lincoln, C. (1978) Procedures for scouting and monitoring for cotton insects. Arkans. Agric, exp. Sin Bull. Vol. 829.Google Scholar
Lowe, J. A. (1970) Rice Survey of 1970. The Ford Foundation, New Delhi.Google Scholar
Madjar, V. M., Cohen, S., Chen, M., Tam, S. and Rasilio, D. (1982) A method for monitoring Bemisia tabaci and timing spray applications against the pest in cotton fields in Israel. Phytoparasitica. 10, 85–91.CrossRefGoogle Scholar
Mahal, M. S. and Singh, B. (1979) Population build-up of cotton jassid and index of its injury as a measure of resistance in Okra. Indian J. Ecol. 6, 74–81.Google Scholar
Morrisita, M. (1962) IS-index, a measure of dispersion of individuals. Res. Popul. Ecol. 4, 1–7.CrossRefGoogle Scholar
Panse, V. G. and Sukhatme, P. V. (1967) Statistical Methods for Agricultural Workers. Indian Council for Agricultural Research, New Delhi.Google Scholar
Pieters, E. P. (1978a) Comparison of sample-units sizes for D-vac sampling of cotton Arthropods in Mississippi. J. econ. Ent. 71, 107–108.CrossRefGoogle Scholar
Pieters, E. P. (1978b) Bibliography of sequential sampling plans for insects. Bull. ent. Soc. Am. 24, 372–374.Google Scholar
Regniere, J. and Saunders, C. J. (1983) Optimal sample size for the estimation of spruce budworm (Lepidoptera: Tortricidae) populations on balsam Fir and White spruce. Can. Ent. 115, 1621–1626.CrossRefGoogle Scholar
Singh, H. (1978) Studies on the insect pest infestation in relation to phenology of arboreum cotton. M.Sc. thesis (unpublished) Punjab Agricultural University, Ludhiana.Google Scholar
Southwood, T. R. E. (1978) Ecological Methods with Particular Reference to the Study of Insect Populations. Champman & Hall, London.Google Scholar
Suri, S. M. (1971) Evolving spray schedule for the control of insect infesting desi cotton in the Punjab. M.Sc. (Argi) thesis. Punjab Agricultural University, Ludhiana. Unpublished.Google Scholar
Wolfenbarger, D. A. (1977) Boll weevil, bollworm and tobacco budworm and fruiting structures of the cotton plant: number of plants that must be sampled at different square populations and percentage damaged. J. econ. Ent. 70, 791–793.CrossRefGoogle Scholar
Yuen-Shaung, N. G., Trout, J. R. and Ahmad, S. (1983) Sequential sampling plans for larval populations of the Japanese Beetle (Coleoptera: Scarabaeidae) in Turfgrass. J. econ. Ent. 76, 251–253.Google Scholar