Pesticidal activity of certain plant extracts and their isolates against the cowpea beetle Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae: Bruchinae)
Journal Title: Herba Polonica - Year 2015, Vol 61, Issue 3
Abstract
Different extracts from seven plant species were assayed against the cowpea beetle (Callosobruchus maculatus) in the laboratory. The plants were extracted sequentially with petroleum ether, chloroform and ethyl alcohol. The petroleum ether extract of each was fractionated into sap and unsap, then identified by GC chromatography. Also compounds isolated from chloroform and alcohol extracts of Citrullus colocynthis and petroleum ether extract of Nicandra physaloides were tested for their toxicity against the adult beetle. The sensitivity of the adults to various crude extracts revealed great variation in effectiveness. Petroleum ether and chloroform extracts of Nicandra physaloides proved to be the most toxic in comparison to other extracts tested, while petroleum ether extracts of Curcuma longa proved to be the least effective. All the fatty acid fractions of the seven plant species were toxic to the adult beetles at the tested concentrations. N. physaloides, Schinus terebinthifolius and Dodonaea viscosa resulted in 100% mortality of adults at the highest concentration tested (1.0%). Using 1.0% unsap fraction of Dodonaea viscosa resulted in 100% mortality between the adults. The least percentage mortality between the adult beetles recorded (22%) was for unsap fraction of T. orientalis at concentration of 0.0625% but increased to 80.0% mortality at concentration of 1.0%. The compounds isolated from chloroform and alcohol extracts of C. colocynthis and petroleum ether extract of N. physaloides proved to be highly efficient against C. maculatus adults.
Authors and Affiliations
Nadia Dimetry, Magdy Abbass, Soad El-Gengaihi, Mahmoud Hafez
Keywords
Related Articles
- EP ID EP266771
- DOI 10.1515/hepo-2015-0024
- Views 80
- Downloads 0
Solubility and solubilizing capabilities of aqueous solutions of Extractum Taraxaci e radix cum herba aqu. siccum in light of selected values of general Hildebrand-Scatchard-Fedors theory of solubility
Introduction: The general Hildebrand-Scatchard theory of solubility supplemented by Fedors’ solubility parameter was used to estimate the real solubility by -log x2 (log of the mole fraction) of phytochemicals contained...
Biological activities of Allium sativum essential oil against pulse beetle, Callosobruchus chinensis (Coleoptera: Bruchidae)
Essential oil from Allium sativum was isolated and investigated for its repellent, insecticidal, ovipositional and egg hatching inhibition activities against pulse beetle, Callosobruchus chinensis (Coleoptera: Bruchidae)...
Antibacterial activity of Tribulus terrestris methanol extract against clinical isolates of Escherichia coli
Introduction: Tribulus terrestris L. is traditionally used for treatment of urinary tract infections. Escherichia coli, as the most prominent agent of urinary tract infections, can be sensitive to T. terrestris extract....
Chemical variability of common skullcap (Scutellaria galericulata L.) wild growing in the area of eastern Poland
Introduction. In the group of plants revealing adaptogenic activity, species belonging to Scutellaria genus are considered to be the most important ones. Common skullcap (Scutellaria galericulata L.) is less known specie...
In vitro leaves and twigs antimicrobial properties of Psidium guajava L. (Myrtaceae)
The current study aimed to investigate antimicrobial activity of methanol, ethanol, acetone, ethyl acetate and hot water (leaves and twigs fractions) Psidium guajava L. crude extracts against three bacteria and two fungi...