Colorado Potato Beetle (Leptinotarsa decemlineata Say) Control Potential of Essential Oil Isolated from Iranian Cymbopogon citratus Stapf
Natural Product Sciences
;
: 235-238, 2017.
Article
in English
| WPRIM
| ID: wpr-55956
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Plants
/
Coleoptera
/
Solanum tuberosum
/
Oils, Volatile
/
Colorado
/
Mortality
/
Cymbopogon
/
Environmental Pollution
/
Insecticides
/
Insecta
Type of study:
Prognostic study
Limits:
Adult
/
Humans
Country/Region as subject:
North America
Language:
English
Journal:
Natural Product Sciences
Year:
2017
Type:
Article
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