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Labor- und Freilandversuche zur Bekämpfung von vier Blattlausarten mit zwei synthetischen Juvenilhormon-Analogen

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Abstract

Laboratory and field trials with two synthetic Juvenil Hormone Analogues on four Aphid species

Two juvenile hormone analogues (JHA) were applied in laboratory in three different concentrations to four aphid species. Mortality-concentrations and mortality-time for the lowest concentration were plotted on logprobit paper and the slope calculated from the eye fitted lines. The results indicated the feasibility of probit analysis for concentration-mortality or time mortality responses. However in one of the aphid species i. e.Aphis gossypii, there was a lack of linearity in the relationship, this species proved to be tolerant to JHA in field trials.

Both JHA supressed progeny production, the supression was found to be selective to different species. In field trials both JHA brought about appreciable reductions in the populations with the exception ofAphis gossypii.

The colour ofH. arundinis was found to differ in adults insuing from treated nymphs, otherwise no remarkable morphonogenic changes were observed.

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Authors and Affiliations

  1. High Institute of Agriculture, Moshtohor, Egypt

    S. M. Ahmed &  A. A. Abdel-Gawaad

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  1. S. M. Ahmed
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  2. A. A. Abdel-Gawaad
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Ahmed, S.M., Abdel-Gawaad, A.A. Labor- und Freilandversuche zur Bekämpfung von vier Blattlausarten mit zwei synthetischen Juvenilhormon-Analogen. Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 48, 148–150 (1975). https://doi.org/10.1007/BF01876511

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  • DOI: https://doi.org/10.1007/BF01876511

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