Evaluation of some local spray oils and bio- insecticides for the control of citrus white flies and mealy-bug on citrus trees | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 7, Issue 3, December 1999, Pages 15-24 PDF (3.47 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.1999.462111 | ||
| Author | ||
| Moustafa F. El-Deeb* | ||
| Plant Protection Research Institute, Agriculture Research Station El-Sabahia, Alexandria | ||
| Abstract | ||
| This study was conducted to evaluate the efficacy of some local mineral oils at late winter, for controlling citrus mealy-bug, Planococcus citri. (Risso) and two citrus white flies, Acaudaleyrodes citri (Priesner & Hosny) and Dialeurodes, citri (Ashmed). The study indicated that Masrona oil is the most effective one against the two citrus white flies, A. citri and D. citri. The other oils were arranged in the following order Masrona, Albolium and Folk respectively for A. citri, while, it was Masrona and Albolium for D. citri. On the other hand, there was no significant effect between Folk and the control. Studying the efficiency of five meniral oils against citrus mealy-bug, P. citri indicated that effective materials were Folk, Kz oil, Royal oil, super Royal and Masrona oil respectively. On the other hand, the highest percentage of reduction of P. citri was recorded after 4 and 6 weeks. The laboratory study for three mineral oils and three bio-insecticides on citrus mealy-bug indicated that, the citrus mealy-bug, P. citri was more susceptible to the tested local mineral oils and bacterial compound (Spinosad) and less susceptible to fungi compounds (Natural L and Bio fly). The toxicity of the tested compounds was highly significant with more time and concentrations. The tested compounds can be arranged descendingly as LC50 as follows: Spinosad, Natural-L, Masrona, Albolium, Kz and Biofly after 96 hrs. | ||
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