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Hadis, M., Lulu, M., Mekonnen, Y., & Asfaw, T. (2003). Field trials on the repellent activity of four plant products against mainlymansonia population in western ethiopia. Phytotherapy Research, 17(3), 202–205. 
Resource type: Journal Article
DOI: 10.1002/ptr.1051
ID no. (ISBN etc.): 0951-418X
BibTeX citation key: Hadis2003
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Categories: General
Creators: Asfaw, Hadis, Lulu, Mekonnen
Collection: Phytotherapy Research
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The repellent activity of essential oils of lemon eucalyptus (Eucalyptus maculata citrodion), rue (Ruta chalepensis), oleoresin of pyrethrum (Chrysanthemum cinerariaefolium) and neem (Azadiracta indica) have been field tested as 40%, 50% and 75% solutions in coconut oil against populations of mosquitoes consisting mainly of Mansonia in Gambella, western Ethiopia. A latin square design was used to randomize the test subjects for possible individual differences for mosquito attraction. Repellency was evaluated as the percentage protection. Deet was included in the study for comparison. All the plant products manifested repellency. At 50% concentration at which the highest repellency was recorded the protection was 91.6%, 87.0%, 96.0%, 97.9% for rue, neem, pyrethrum and deet, respectively. The essential oil of lemon eucalyptus was not tried at this concentration. At a 40% concentration deet, lemon eucalyptus and pyrethrum were significantly (p <0.05) more effective than rue and neem. At a 50% concentration, deet and pyrethrum were significantly better (p <0.05) than rue and neem. At a 75% concentration concentration, deet and lemon eucalypus performed significantly better (p <0.05) than pyrethrum and neem. The difference between pyrethrum and neem was also significant (p <0.01). Copyright ©2003 John Wiley & Sons, Ltd.