Mehdi Gheibi Articles List

List of Articles Mehdi Gheibi

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1 - Side effects of Thiacloprid, Azadirachtin and the red pepper extract on Habrobracon hebetor Say (Hym. Braconidae) in contact and arad methods
M. Rezaei Mehdi Gheibi Shahram Hesami H. Zohdi

Biological control is one of the most important part of the Integrated Pest Management.  Habrobracon hebetor wasp is an effective parasitoid of larvae of Lepidoptera pests. In this research, we investigated the effect of three insecticides, Thiacloprid, Azadirachti More

Biological control is one of the most important part of the Integrated Pest Management.  Habrobracon hebetor wasp is an effective parasitoid of larvae of Lepidoptera pests. In this research, we investigated the effect of three insecticides, Thiacloprid, Azadirachtin and Red pepper extract on biological parameters of the wasp in two methods, contact and digestive at the laboratory condition. The experiments were conducted in 5 replicates each with 30 wasps.The lethal concentration LC50 in contact method was obtained 0.185, 1.16 and 122.070 mg/l for Thiacloprid, Azadirachtin and Red pepper extract respectively. In digestive method the results were 5.388, 97.68 and 1.977 mg/l respectively. Intrinsic rate of increase (rm) in LC50 were 0.245, 0.233, 0.242 and 0.261 female/female/day) for contact method and 0.228, 0.235, 0.202 and 0.260 female/female/day) for aral method respectively for Thiacloprid, Azadirachtin , Red pepper extract and control. This parameter in treated wasp has been reduced by both methods compared to control. According to the results of this study, the use of Red pepper extract and Azadirachtin had the least negative effect on this wasp. Manuscript profile
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2 - Residues measurement of common insecticides in Berberis vulgaris by gas chromatography in Iran
A. Sonei Sh. Hesami M. Gheibi H. Ostovan

Different pesticides have been used to control pests of barberry (Berberis vulgaris) in south Khorasan province, Iran. Due to use barberry in both raw and cooked, identification and quantification of residues of common pesticides (Diazinon, Oxydemeton-methyl and Phosalo More

Different pesticides have been used to control pests of barberry (Berberis vulgaris) in south Khorasan province, Iran. Due to use barberry in both raw and cooked, identification and quantification of residues of common pesticides (Diazinon, Oxydemeton-methyl and Phosalone) in barberry was monitored by using GC-MS. To achieve a suitable method for extraction and purification, four valid methods such as QuEChERS Extraction, Static extraction, Changing PH and Solid Phase Extraction (SPE) were used. To reduce matrix effects in measurements, the addition standard used and the resulting signal level from GC by using pesticides standards calibration curves were measured. Extraction with acetonitrile solvent and scan mode of GC-MS showed that most of the barberries were contaminated by the pesticides. Four kind of different extraction method were compared with each other in spiked distilled water and then spiked barberry samples. The SPE extraction seemed to give slightly lower recoveries for the sample tested. Although Changing PH and Static extraction were so quick, but had the worst results. The results obtained confirmed that QuEChERS Extraction method may be used to extract pesticide residues from barberry. Other pesticides also found with a very low concentration by GCMS full scan method, such as Dimethoate, Dursban & Acetamyprid, that may has been used in the region and came as drift. Manuscript profile
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3 - Effect of flupyradifurone, spirotetramat and thiacloprid insecticides on common pistachio psylla, Agonoscena pistaciae Burckhardt & Lauterer (Hem.: Psyllidae)
M. Gheibi Y. Taheri

Common pistachio psylla, Agonoscena pistaciae, is the most important pest of pistachio orchards in Iran and reduce the quantity and quality of the product. In this study, the effects of Flupyradifurone 0.5, 0.75 and 1 ml L-1, Spirotetramat and Thiacloprid 0.5 ml L-1 and More

Common pistachio psylla, Agonoscena pistaciae, is the most important pest of pistachio orchards in Iran and reduce the quantity and quality of the product. In this study, the effects of Flupyradifurone 0.5, 0.75 and 1 ml L-1, Spirotetramat and Thiacloprid 0.5 ml L-1 and Flupyradifurone (0.5 ml L-1) with irrigation water were evaluated on nymphs and adult stages of A. pistaciae in Niriz region of Fars province. The number of nymphs and adult of A. pistaciae recorded in one day before until 3, 7, 10, 15, 20, 25, 30 and 40 days after chemical applications. The results showed that 3 days after treatment, different concentrations of Flupyradifurone and Thiacloprid have a good effect on the psyllid nymphs and the mean maximum of dead nymphs was in Thiacloprid. The mortality in Spirotetramat treatment on nymphs was increased in on the day 7 and the highest mortality occurred after 20 days. The mean number of the nymphs on treated trees with Flupyradifurone and Thiacloprid increased after 15 days of treatment. Efficacy of Spirotetramat increased after 7th day and the maximum efficacywas 99.44 percent on 20th day after treatment. The highest mean number of adult psyllid mortality was observed on day 3 after treatment in Flupyradifurone with concentration of 1 ml L-1.  The efficacy of Spirotetramat on adults increased after 10 days post-treatment and the highest was occurred on 30 day of sampling (98.23). The results showed that Spirotetramat was effective in decreasing of the pistachio psylla population after 40 days of the insecticide application. Manuscript profile

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List of Articles Mehdi Gheibi