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 RAS 299-1 âgés 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 les jeunes feuilles des branches terminales. La population larvaire et pupale était plus concentrée sur les feuilles de milieu que sur celles des extrêmités, et suivait dans leur distribution une courbe normale. Les adultes affkhaient la même tendance de distribution que les oeufs.
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Naik, L.K., Lingappa, S. Distribution Pattern of Bemisia Tabaci (Gennadius) in Cotton Plant. Int J Trop Insect Sci 13, 377–379 (1992). https://doi.org/10.1017/S1742758400013667
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DOI: https://doi.org/10.1017/S1742758400013667