PATHOGENICITY EFFICACIES OF BEAUVERIA BASSIANA AND NANO- BEAUVERICIN SOME TOMATO SERIOUS PESTS AND THEIR PREDATORS
Keywords:
Bemisia Tabaci, Whitefly, Aphids, Bioinsecticide Toxin, Tomatoes, Beauvericin, Nano, Coccinella UndecimpunctataAbstract
The effect of the fungi Beauveria bassiana and Nano- Beauvericin on the target insect pest show that, under laboratory condition the LC50s obtained 65.3x 104 and x 104conidia/ml for B. tabaci after treated with different concentrations of Beauveria bassiana and nano- Beauvericin respectively. The LC50s for M. persicae recorded 51.4 x 104 and x 104 conidia /ml after treated with the corresponding pathogen.
Under field condition in El Esraa (Nobarya) the data obtained detect tat, the M. persicae significantly decreased to 8±9.6, 18±9.1and 25±9.6 individuals after post applications of Nano- Beauvericin treatments after 50, 90 and 120 days. When B. tabaci treated with Beauveria bassianathe individuals significantly decreased to 33±9.4, 38±6.4, and 47±8.2individuals as compared to 49±1.4, 79±4.9, 91±5.7 and individuals in the control after20, 50, 90 and 120 days respectively. El-Kassaseen (Ismailia) governorate, both of the target insect pests significantly decreased.
The experiments in the field showed that, in two governorates, the tomato infesta tion with B. tabaci or M. psicae significantly decreased after treatments by Beauveria bassianaand nano- Beauvericin as compared to control plants.
