DETERMINATIONS OF IMIDACLOPRID AND NANO- IMIDACLOPRID ON SOME TOMATO SERIOUS PESTS AND THEIR PREDATORS
Keywords:
Bemisia Tabaci, Whitefly, Aphids, Bioinsecticide Toxin, Tomatoes, Coccinella UndecimpunctataAbstract
The effect of the fungi Imidacloprid and Nano- Imidacloprid on the target insect pest show that, under laboratory condition the LC50s obtained 88.3x 104 and 127.3x 104conidia/ml for B. tabaci after treated with different concentrations of Nano-Imidacloprid and M.a respectively. The LC50s for M. persicae recorded 66.4x 104 and 137.2x 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 7,1±4.6, 17.1±4.8and 27.5±4.8 individuals after post applications of Nano-Imidacloprid treatments after 50, 90 and 120 days. When B. tabaci treated with Imidacloprid the individuals significantly decreased to 25.5±4.4, 29.9±4.8, 39.9±8.8and 49.9±2.8 individuals as compared to 49.4±5.8, 80.4±5.8, 98.4±5.8 and 188.4±5.8 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 Imidacloprid and nano-Imidacloprid as compared to control plants.
