INSECTICIDE RESISTANCE OF THE BACTERIA BACILLUS THURINGIENSIS
AGAINST BACTROCERA OLEAE UNDER FIELD CONDITIONS
M. Sabbour. International Educational Applied Scientific Research Journal2 (2):
The effect of the fungi ImidaclopridandNano- Imidaclopridon the target insect pest show that, under laboratory condition the LC50s obtained 88.3x 104 and127.3x 104conidia/ml for B. tabaci after treated with different concentrations of Nano-Imidacloprid and M.arespectively. The LC50s for M. persicae recorded 66.4x 104and137.2x 104conidia /ml after treated with the corresponding pathogen.
Under field condition in El Esraa (Nobarya) the data obtained detect tat, the M. persicaesignificantly decreased to 7,1±4.6, 17.1±4.8and 27.5±4.8individuals after post applications of Nano-Imidacloprid treatments after 50, 90 and 120 days. When B. tabacitreated with Imidacloprid the individuals significantly decreased to 25.5±4.4, 29.9±4.8, 39.9±8.8and 49.9±2.8individuals as compared to 49.4±5.8, 80.4±5.8, 98.4±5.8 and 188.4±5.8individuals 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 infestation with B. tabaci or M. psicae significantly decreased after treatments by Imidacloprid and nano-Imidacloprid as compared to control plants.