The Effect of Using some Integrated Pest Management Factors on the Life Aspects of the Citrus Leaf Miner Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae) in the Laboratory

Abstract

The study aimed to evaluate the efficiency of some integrated management factors in controlling the citrus leaf miner insect in the laboratory and to choose the best of them for field use to reduce the damage of this pest. The factors which used in this study involved two chemical pesticides Movento and Oxymatrine, as well as the use of growth regulators Match and biological fungi Beauveria bassiana (B.b..) and Metarhizium anisopliae (M.a..) and the interaction among them to get the most effective way to control the pest. The results of the study showed Movento is the most studied factor affecting the citrus miner insect in terms of the death rate on the larvae, as it recorded 96.52%, while the growth regulator Match recorded the lowest death rate of 49.20%. As for pupae, the chemical pesticide Movento also excelled by recording the highest death rate, reaching 62.59%, while the growth regulator Match recorded the lowest death rate for pupae stage, which amounted to 23.96%. It is clear from the results that the pupae are more resistant to factors that been used in this study compared with larvae. Results also proved that adults of insect were more effective with factors that used in this study compared with larvae and pupae stage. Movento pesticide showed mortality percentage reached to 100% for adults compared with growth regulator Match, which scored 73.62%, while it did not differ from the pesticide Oxymatrine, which gave 99.14%. The results of interactions among the factors on the larvae of the citrus leaf miner showed that the treatments Movento, Oxymatrine and Match, Movento+B.b.., total interaction had the highest mortality rate for the larvae stage which recorded 100% followed by the treatments Oxymatrine and the Movento + M.a. which recorded 95.56% each. While B.b. and M.a. treatments and the interaction between them, recorded the lowest mortality rate, reaching 9.25, 23.80, and 23.33%, respectively, as for pupae stage. The total interaction treatment only gave the highest mortality rate for pupae of the citrus leaf miner insect, as it recorded 100% and followed by the treatments Movento + B.b. and Movento + Match, which recorded 95.56% for each, while the treatments B.b. and M.a. was recorded the lowest death rate, which amounted to 6.68, 18.73, and 16.66%, respectively.