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Mozaffari F.,Shahed University | Abbasipour H.,Shahed University | Garjan A.S.,Institute of Plant Protection of Iran | Saboori A.,University of Tehran | Mahmoudvand M.,Tarbiat Modares University
Journal of Essential Oil-Bearing Plants | Year: 2013

The two-spotted spider mite, Tetranychus urticae Koch, one of the major pests of various agricultural plants, causes many problems on agricultural, horticultural and ornamental plants. In recent years, using plant-derived compounds such as essential oils and extracts was attended for their insecticidal and acaricidal properties. Mentha pulegium is a native plant of temperate Asia, was identified as an acaricidal plant for the first time in this study. The impact of essential oil of this plant on fumigant toxicity, LT50, oviposition deterrent activity and repellency against Tetranychus urticae was studied at different concentrations. The results stated that M. pulegium oils had high toxicity on eggs and adults of two-spotted spider mite (LC50 was 2.57 and 2.25 μL L-1 for eggs and adults, respectively). In addition, all tested concentrations had oviposition deterrent activity and repellency on adults of this mite. © 2013 Har Krishan Bhalla & Sons. Source


Mozaffari F.,Shahed University | Abbasipour H.,Shahed University | Garjan A.S.,Institute of Plant Protection of Iran | Saboori A.R.,University of Tehran | Mahmoudvand M.,Islamic Azad University
Archives of Phytopathology and Plant Protection | Year: 2012

Ethanolic extract of Mentha pulegium was evaluated against the adults of important arthropod pest species, the two-spotted spider mite, Tetranychus urticae. Potential acaricidal impact of plant was determined by contact application. Phytotoxicity was recorded after 24 h. The value of LC50 was 59,149 mg L-1. Also, LT50 values were 27.42, 25.56 and 19.79 h for 35,000, 50,000 and 100,000 mg L-1, respectively. Also, results showed that this ethanolic extract had impact on repellency of T. urticae. All of the tested concentrations were similar in the repellency test. On the other hand, the used concentrations (1000, 4000, 6000 and 8000 mg L-1) affected on the oviposition of mite females. These extract doses significantly decreased the egg laying on the treated surface. The current study indicated that this ethanolic extract can be used as a safe acaricide on T. urticae. © 2012 Copyright Taylor and Francis Group, LLC. Source


Fatemikia S.,Shahed University | Abbasipour H.,Shahed University | Karimi J.,Shahed University | Saeedizadeh A.,Shahed University | Gorjan A.S.,Institute of Plant Protection of Iran
Archives of Phytopathology and Plant Protection | Year: 2014

Two-spotted spider mite, Tetranychus urticae Koch is the major pest of various plants worldwide. Now the control is dependent on the use of chemical pesticides. Plant compounds are recently known as biopesticides. Essential oil of Elettaria cardamomum was researched on repellent and oviposition inhibition of T. urticae. The LC50 values of fumigant toxicity of this oil on adults and eggs of the two spotted spider mite were 7.26 and 8.82 μL/L air, respectively. Also LT50 value of essential oil at 45 μL/L air was 23.86 h and LT50 value of essential oil at 60 μL/L air was 9.01 h. In addition, different concentrations of the essential oil of E. cardamomum significantly affected oviposition deterrence and repellency of adults. The results of this study indicated that essential oil of E. cardamomum may be considered as a biopesticide to control two spotted spider mites. © 2013 Taylor & Francis. Source


Mozaffari F.,Shahed University | Abbasipour H.,Shahed University | Garjan A.S.,Institute of Plant Protection of Iran | Saboori A.,University of Tehran | Mahmoudvand M.,Islamic Azad University
Journal of Essential Oil-Bearing Plants | Year: 2012

Tetranychus urticae Koch is the major pest of various plants worldwide. Plant compounds are known as biopesticides recently. Essential oil of the oriental arbor-vitae, Thuja orientalis was researched on repellent and oviposition inhibition of T. urticae. The LC50 values of fumigant toxicity of this oil on adults and eggs of the twospotted spider mite were 100.01 and 8.05 μl L-1 air, respectively. Also LT50 value of essential oil at 100 μL L-1 air was 2.06 h. On the other hand, all mites were killed after treatment with 1000 μl L-1 concentration. In addition, different concentrations of the essential oil of T. orientalis significantly affected oviposition deterrence and repellency of adults. The results of this study indicated that essential oil of T. orientalis may be considered as an biopesticide to control spider mites. © 2012, Har Krishan Bhalla & Sons. Source

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