Abstract
In order to develop a strategy for the safe management of insect pests in stored agricultural commodities, the essential oil of Artemisia herba alba Asso. was tested against Callosobruchus maculatus Fabricius raised on seeds of Cicer arietinum (L.) at 20-30°C and 65±5% relative humidity under storage conditions. Chickpea seeds were fumigated with concentrations of essential oil and then infested by young adults of bruchids. On each treated or control lot, 10 newly emerged pairs were released. The number of dead bruchids and number of eggs hatched and unhatched from the seeds were counted. At the end of their development, adults emerged from treated and untreated seeds were counted separately by sex and the success rate was calculated. Three replicates were conducted for each treatment. The essential oil extracted from Artemisia herba alba Asso was analyzed by gas chromatography coupled with mass spectrometry (GC/MS). The chromatogram of the essential oil of Artemisia herba alba Asso shows 15 signals relating to the 15 compounds of which camphor is the major constituent with a percentage of 96.15%. The results of the biological tests obtained showed that the essential oil of Artemisia herba alba Asso exerts repellent and toxic effects on Callosobruchus maculatus. It causes a high mortality of adults and affects its fertility, fertility, and success rate in a very significant way compared to controls. These show that fumigation of stored commodities with the essential oil of Artemisia herba alba Asso against insect pests can be considered under storage conditions without risk to consumers and the environment.
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More From: Journal of microbiology, biotechnology and food sciences
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