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The use of biosurfactant in pest management has received much attention for the control of plant pathogens, but few studies reported their insecticidal activity. The present study describes the insecticidal activity of biosurfactant extracted from Bacillus amyloliquefaciens strain AG1. This strain produces a lipopeptide biosurfactant exhibiting an LC50 of(More)
The whitefly Bemisia tabaci is a species complex including at least 24 morphologically indistinguishable species among which the Mediterranean (Med) and Middle East-Asia Minor I (MEAMI) species containing the biotypes commonly known as Q and B, respectively. These B and Q biotypes (hereafter referred to as MEAMI and Med species) are the most invasive(More)
Aqueous and organic (hexane, chloroform, and methanol) extracts of siliquae, stems and leaves, and seeds of Cleome arabica L. (Brassicales: Capparidaceae) were evaluated in the laboratory for their antifeeding and insecticidal effect on larvae of the cotton leafworm, Spodoptera littoralis (Boisduval) (Lepidoptera, Noctuidae), using a leaf dipping bioassay(More)
Among the Bemisia tabaci (Hemiptera: Aleyrodidae) species complex, the Middle East–Asia Minor I (MEAMI) and the Mediterranean (Med) species are the most invasive and widespread agricultural pests worldwide. Currently, only Tunisia and a few other countries are reported to still “host” these two competing species. The objective was thus to improve our(More)
In the present study, methanol, acetone and petroleum ether extracts of olive leaves were investigated for their insecticidal activity against Myzus persicae and deterrent effect on Phthorimaea operculella under laboratory conditions. Different concentrations 0.1%, 1% and 10% were implemented in the experiment. The results revealed that acetone and methanol(More)
Bacillus thuringiensis (Bt) Cry1A toxins are known for their effectiveness against lepidopteran insects. In this study, the entomopathogenic activity of Cry1Aa was investigated against two lepidopteran larvae causing serious threat to various crops, Spodoptera littoralis and Tuta absoluta. Contrarily to S. littoralis, which showed low susceptibility to(More)
Majdoub, O., Dhen, N., Souguir, S., Haouas, D., Baouandi, M., Laarif, A., and Chaieb, I. 2014. Chemical composition of Ruta chalepensis essential oils and their insecticidal activity against Tribolium castaneum.Tunisian Journal of Plant Protection 9: 83-90. Essential oils are secondary plant metabolites well known for their defensive role in plants. Many(More)
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