Effect of Different Ristriotors on the Toxicity of Some Insectsides against the
Desert Locust in Abo Ramad, Eastern Desert, Egypt

• Abdel-Fattah, T.A.* and A. E. Ammar **
• * Locust Research Department
• ** Spray Technology Research Department, Plant Protection Res. Institute, ARC., Dokki, Giza, Egypt.
• The Third International Conference onIPM Role in Integrated Crop management and Impacts on Environment and Agricultural Products. 26-29 November 2005, Giza, Egypt.

Abstract

The effects of four insecticide formulations were tested under field conditions of Abo Ramed in the region Valley El Doeib Eastern desert, Egypt by using four different nozzles with micron ulva sprayer (ULV+) against 4th and 5th nymphal instars of desert locust, Schistocerca gregaria. The insecticide engeo proved superior compared with karate, regent and dursban through all the periods post treatment. The toxicity of insecticides were arranged descending as follow: engeo> regent> karate> dursban after 48 and 72 hours. There were significant differences between the insecticides of all the periods post treatment. There were no significant differences between the black and orange nozzles in the all periods post treatment to all tested insecticides. Also, no significant differences between the red and yellow nozzles but they arranged as: black> orange> red>yellow. As a general trend, the effectiveness of four insecticides against the nymphal instars (4th, 5th) of desert locust differed according to different type of nozzles and the carrier (water or oil).