| Lethal effect of several nanoemulsions based on plant essential oils against two-spotted spider mite (Tetranychus urticae Koch) |
| Paper ID : 1296-3IICE (R1) |
| Authors: |
|
behzad jamli *1, Hamid Reza Sarraf Moayeri2, Aurang Kavousi3, Ali Reza Bolandnazar4 1department of Plant Protection, University of Zanjan, Zanjan, Iran 2Plant Protection Dept., Zanjan University 3Department of Plant Protection, Faculty of Agriculture, University of Zanjan, Zanjan, Iran 4Plant Protection Dept, Zanjan Univ |
| Abstract: |
| The two-spotted spider mite, Tetranychus urticae Koch is one of the most important pests of agricultural products worldwide. Although some essential oils and plant extracts have shown good acaricidal properties against this pest, but these compounds have not become widely commercial, so far. In this study, the efficacy of two Nano-emulsion formulations of essential oils from several plants was assessed against the pest in greenhouse on black-eyed cowpea (Vigna unguiculata L.). The treatment A was made of essential oils of Rosmarinus officinalis, Mentha Iperita, and Eucalyptus globules and the second formulation, treatment B, was made of the same components plus the extract from Thymus vulgaris. Based on Henderson–Tilton formula, the efficacies were evaluated on two days after treatment (DAT 1 and DAT 5). LC50, LC90 and 2*LC90 were used as treatment along with the corresponding control. The efficacy of treatment A for LC50, LC90 and 2*LC90 at DAT 1 and DAT 5 were 5.05%, 48.33%, 89.80% and 14.66%, 64.20% and 95.52%, respectively. The respective efficacy of treatment B for LC50, LC90 and 2*LC90 at DAT 1 and DAT 5 were 6.25%, 19.23%, 25.81% and 11.11%, 69.70 and 73.17%. Results showed the first formulation had a higher performance. Both treatments were observed in greenhouse experiments with concentrations of LC90 and 2*LC90 between 50 and 70% of phitotoxic. |
| Keywords: |
| Bioassay, Essential oils, LC50, Nanoemulsion |
| Status : Paper Accepted (Poster Presentation) |
