Abdallah, S.A., Al Jboory, I.J., Ali, A.S., & Yousif, E.T. 2001 [Susceptibility of wheat varieties to infestation with the soft scale insect Exaeretopus tritici (Williams) (Coccidae: Homoptera) and its control by Cruiser insecticide in Nineveh Province (Iraq).].. Arab Journal of Plant Protection 19(2): 113-118.

Notes: Susceptibility of five wheat cultivars (Um Rabee, Intisar, Abu-Ghraib, Qaruniya and Waha) to infestation of the soft scale insect E. tritici and the effect of wheat seed treatment with Cruiser 350 SL [thiamethoxam] insecticide on pest susceptibility were investigated. Results indicated that Um Rabee was the most susceptible cultivar, whereas Qaruniya was the least susceptible. The relative number of living insect pests on the untreated plants was more than that of treated plant by 23.45, 11.86, 8.11, 2.28 and 7.19 times, respectively. The insecticide effect was observed by the fourth week of March where a percentage mortality of 61.16% was recorded. The mortality percentage increased until the third week of April when it reached a maximum of 88.4%. The above wheat cultivars treated by the insecticide provided a percentage increase in yield of 3.74, 2.17, 1.99, 1.89 and 2.46 times, respectively, compared to the untreated control. The treated Qaruniya recorded the highest yield, with an average of 950 kg per donum. The untreated Um Rabee plants recorded the least yield (205 kg per donum), with the highest number of living insect pests (average 72.87 insects per plant).