Abdullah, S.I. and I.J. Al-Jboory. 2006. Efficacy of Actara (Thiamethoxam) Insecticide Against Soft Scale Insect Exaeretopus tritici (Williams) with Special Reference of its Effect on the Productivity of Wheat and Barley. Arab J. Pl. Prot. 24: 89-92.
Efficacy of the insecticide Actara 2.5 WG (Thiamethoxam) at a rates of 0.009 and 0.015 kg a.i./60 m2, was studied against the insect Exaeretopus tritici (Williams) on wheat (c.v. Caronia) and barley (c.v. Rihane) fields in northern Iraq. Effect of the insecticide on the productivity of the two crops was also considered. The highest mortality of the insect was obtained with the high dose one day after application in wheat and barley fields and reached 86.3% and 88.2%, respectively. Mortality rates were decreased with time and reached 53.6% and 34.5%, 18 days after application. Insecticide treatment significantly improved several agronomic traits including yield and yield components. The high rate of application, for example, increased the 1000 grain weight 1.94 and 2.68 times, number of tillers/plant 3.05 and 3.35 times and number of spikes/plant 2.45 and 2.38 times for wheat and barley, respectively. Consequently the grain yield of wheat and barley crops increased 2.84 and 2.07 times, respectively.
Key words: wheat, barley, Thiamethoxam, actara, Exaeretopus tritici, productivity, Iraq.
Efficacy-of-Actara-Thiamethoxam-Insecticide-Against-Soft-Seed-treatment-Wheat-soft-scale-Suaad-JPP-2006
