Effect of Different Materials on some Biological Characteristics of Green Lacewing, Chrysoperla carnea (Stephens) Under Laboratory Conditions

Document Type : Original Article

Author

Plant protection department-faculty of agriculture- Zagazig University

Abstract

Effects of three different materials [mint oil, Beauvaria bassiana (Balsam) and lambda cyhalothrin 5 % EC] on the biological aspects of the 2nd larval instar of Chrysoperla carnea (Stephens) were evaluated. Experiments were carried out using three concentrations; 0.5, 1 and 2 of field recommended concentration (FRC) under laboratory conditions of 25 ± 2 ºC and 65 ± 5 R.H. The obtained results showed that lambda cyhalothrin was the most effective material against the 2nd larval instar of C. carnea, recording the highest percentage of mortality (60, 70 and 70 % at 0.5, 1 and 2 FRC, successively), whereas, mint oil was the lowest effective material recording (30, 50 and 60 % ) at 0.5, 1 and 2 FRC, respectively). The means of larval duration detected 8.86, 9.50, 7.00 and 5.55 days, when the larvae of the predator were fed on treated aphid at 0.5 FRC with mint oil, B. bassiana, lambda cyhalothrin and control, respectively. The maximum values of fecundity, fertility and hatchability percentages (407 eggs, 89.53 % and 93.85 %, consecutively) were detected with control treatment. On the other hand, lambda cyhalothrin at 2.0 FRC recorded the minimum values of the biological aspects mentioned before showing 6.00 eggs, 33.00 % and 0.00 %, respectively. Finally, all tested materials should be used safely at relatively low rates of application with release of the predator, C. carnea for efficient control.

Keywords

Journal of Plant Protection and Pathology
Volume 12, Issue 2
February 2021
Pages 145-151

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