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Distribution pattern of Bemisia tabaci (Gennadius) in cotton plant

Published online by Cambridge University Press:  19 September 2011

L. Krishna Naik  and
S. Lingappa
L. Krishna Naik
Affiliation:
Department of Agricultural Entomology, College of Agriculture, Dharwad-580005, India
S. Lingappa
Affiliation:
Department of Agricultural Entomology, College of Agriculture, Dharwad-580005, India
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Abstract

Investigations on temporal distribution of Bemisia tabaci (Gennadius) was carried out on 14 weeks old cotton genotype, RAS 299–1, during 1987–1988 at Raichur (Karnataka). Oviposition was restricted mainly on the leaves of the youngest branches. Highest egg load of 89.16 per sq cm was recorded on youngest leaf of terminal host branch. Nymphal and pupal population was more on the middle leaves than on extreme leaves and followed a normal curve in their distribution. Adults exhibited similar trend in distribution to that of the egg stage.

Résumé

Des études sur la distribution temporeile de Bemisia tabaci (Gennadius) ont été condultes en 1987–1988 à Raichui (Karnataka) sur des cotonniers de la variété R AS 299-1 àgés de 14 semaines. L'oviposition était principalement limitée aux feuilles des plus jeunes branches. Le taux de ponte le plus élevé correspondent à 89.16/cm2, a été observé sur Ies jeunes feuilles des branches terminales. La population Iarvaire et pupale était plus concentrée sur les feuilles de milieu que sur celles des extrêmltés, et suivait dans leur distribution une courbe normale. Les adultes affkhaient la même tendance de distribution que les oeufs.

Keywords

Bemisia tabacitemporal distributioncotton whiteflyStades de Bemisia tabacidistribution temporellefeuilles et branches de cotonnier
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 13 , Issue 3 , June 1992 , pp. 377 - 379
Copyright
Copyright © ICIPE 1992

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References

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