Evaluation the efficacy of Insecticides Spinosad and Imidacloprid in olive trees infested by termite Microcerotermes diversus (Silvestri) (Isoptera: Termitidae)

Abstract

Termites reason deep commercial fatalities international. Microcerotermes diversus (Silvestri) reasons marvelous indemnities to timber effort in the constructions and woodland plants. Diverse kinds of fly spray have been utilized to dominate this underground termite. In the present research, efficacy of imidacloprid and Spinosad against Microcerotermes diversus (Silvestri) was studied. The results showed that the direct spray of different concentration (200, 400 and 600 ppm) for both Spinosad and imidacloprid on the stems of Olive trees and soil surrounding a diameter of 20 cm was high impactive in termite infestation reduction which decreasing the tunnels length and the quantity of workforces gradually and absence the termite infestation after the time. The duration of absence of termite infestation refinish on concentrations of the both termiticides. It is noted in concentrations 200 and 400 ppm for the pesticide imidacloprid, the infestation was continuous during the year and the termite infestation did not stop, as for the concentration of 600 ppm, it prevented the infestation for a period of 3 months, and then the infestation resumed in the months of April, May and June, after which the infestation was stopped. As for the pesticide Spinosad at all its concentrations, it prevented the infestation with different periods, the best and most efficient, the concentration of 600 ppm, the infestation was prevented after two months of spraying, and the infestation continued for all concentrations until the assumption of the investigate period, besides the impact of spinosad reduced and prevent the quantity of workforces visiting the stem of Olive trees gradually till the infestation was absence.