Hamze, M. (2013) Effect of pathogenicity the fungus Trichoderma harzianum and lethal effect of extract Eucalyptus globulus on the grasshopper Chrotogonus trachypterus (Orth.: Pyrgomorphidae). Masters thesis, University of Zabol.
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Abstract
One of the major and native pests of Sistan is Chrotogonus Trachypterus. Each year considerable damage to the crop products will enter. Due to the dangers of chemical pesticides, human awareness about irreversible and harmful effects on the environment and human health increased. In the meantime, microorganism especially pathogenic fungi agents, essential oils and herbal extracts, have been attracted the most attention. In this study, the effect of exposure to the fungus Trichoderma Harzianumon grasshopper C. Trachypterus was tested. The experiments were performed with 28±2 ̊C temperature conditions, relative humidity 60±5 percent and photoperiod 16:8 (light and darkness). The contact effects with Topical method by micropipette apparatus of different concentrations of fungi under pronoun of adults were performed. Fungus concentrations included 104, 105, 106, 107 and 108 spores/ ml, and control (Distilled water with Tween 20) were prepared and mortality calculated within 15 days separately. The results showed that the maximum and minimum mortality were, in fungicidal concentrations of 108 and 104, 75 and 20 percent respectively (P<0.05). Therefore, the use of Entomopathogenic fungi can have effect Pathogenicity on grasshopper C. trachypterus. The comparison of results obtained from Eucalyptus extract on 5 concentration, 33, 22, 16.5, 8.5 and 4.125 mg/ ml, on adults showed that the mortality is equal to 86.6, 70, 53.3, 40 and 26.6 percent respectively. Studies show that mortality rate with increasing concentration increased. According to the results of bioassay, it can be concluded that the application of Entomopathogenic fungi T.harzianum and Eucalyptus globules extract has a positive effect on the target pest control in Sistan.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Pathogencity, Trichoderma harzianum, Chrotogonus trachypterus, Biological control Bioassay, Eucalyptus globulus, Plant extracts |
| Subjects: | S Agriculture > SB Plant culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 28 May 2016 05:49 |
| Last Modified: | 28 May 2016 05:49 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/661 |
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