Colorado Potato Beetle (Leptinotarsa decemlineata Say) Control Potential of Essential Oil Isolated from Iranian Cymbopogon citratus Stapf.
10.20307/nps.2017.23.4.235
- Author:
Asgar EBADOLLAHI
1
;
Jafar GERANMAYEH
;
Morteza KAMRANI
Author Information
1. Moghan College of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56971-94781, Iran. ebadollahi@uma.ac.ir
- Publication Type:Original Article
- Keywords:
Cymbopogon citratus;
Essential oil;
Leptinotarsa decemlineata;
Toxicity
- MeSH:
Adult;
Beetles*;
Colorado*;
Cymbopogon*;
Environmental Pollution;
Humans;
Insecticides;
Insects;
Larva;
Methods;
Mortality;
Oils, Volatile;
Plants;
Solanum tuberosum*
- From:Natural Product Sciences
2017;23(4):235-238
- CountryRepublic of Korea
- Language:English
-
Abstract:
Colorado potato beetle is a most destructive insect pest of potato throughout the world. Although utilization of chemical insecticides is a main method for management of this pest, their negative side-effects such as threat to humans and the environmental pollution prompted researchers to search for natural alternatives. Recently plant essential oils with low or without side-effects against noun-targeted organisms and with high availability were considered as safe bio-pesticides. In the present study, toxicity of essential oil of Iranian lemongrass, Cymbopogon citratus Stapf, was evaluated against 3th instar larvae and adults of Colorado potato beetle by a leaf dipping method. Results displayed essential oil had notable toxicity against both larvae and adults after 24 and 48 h exposure times. Probit analysis revealed LC₅₀ values (lethal concentration to kill 50% of population) with 95% confidence limits were 10.32 (9.17 – 11.72) and 7.76 (6.80 – 8.74) µl/ml for larvae and 6.27 (4.82 – 8.15) and 4.35 (3.24 – 5.62) µl/ml for adults after 24 and 48 h, respectively. Based on regression analysis, a positive correlation between log concentration of essential oil and insect mortality was achieved. Results indicated C. citratus essential oil can be candidate as a natural alternative to the harmful chemical insecticides in the management of Colorado potato beetle.
