Study on the effects of some botanical extracts and granulosis virus (GV) for controling potato tuber moths (PTM) larvae of phthorimea operculella (zeller) [electronic resource].

Includes references.

The relative susceptibility of secound and fourth instar larvae of Phthorimea operculella (Zeller) to botanieal extrasts of Meli azedarch L., Chinaberry fruits, Ajuga mpponeratic , Zygophylum spp. and, Granulosis virus (GV) was studied by bioassay laboratory condition. Larval mortality increased with increasing the doses . LC50 values were 0.266- 3.851- 15.23 and 2.111 for the fourth instar larvae of Meli azedarch L., Chinaberry fruits, Ajuga mpponeratic , Zygophylum ,respectively . LC50 values were 1.905 - 3.714 - 15.23 and 1.977 for the second instar larvae of Meli azedarch L., Chinaberry fruits , Ajuga mpponeratic , Zygophylum spp, respectively, LC50 values was 0.490 for (GV) fourth instar larvae of Granulosis virus. On the other hand LC50 values was 1.977 for secound larval instar larvae of Granulosis virus (GV) .The bioinsecticide , Granulosis virus (GV) and botanical extract Zygophylum simplex were the most toxic. Percent laraval mortality and that of larvae which failed to pupate increased by increasing the concentrations . While percent pupation and that of emerged adults decreased by increasing the concentrations of the different treatments. Morphological deformities were observed during pupae stage and adults produced from the survived treated larvae.

Summary in Arabic.

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