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Maximizing the Parasitism Role of Coccophagus scutellaris Against The Soft Scale Insect; Pulvinaria tenuivalvata (Newstead) (Homoptera: Coccidae) in Egyptian Sugar-Cane Fields
- Khewa M. M. I.
- Plant Protection Research 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
Field trials were carried out in Quena Governorate, Egypt, to maximize the role of the Aphelinid parasitoid; Coccophagus scutellaris to control the sugarcane soft scale insect; Pulvinaria tenuivalvata in 2003 and 2004 seasons. The work was attempted by collecting the natural parasitized scales from high infested field and releasing them in another field with low parasitism level. Results showed that parasitism level significantly increased with 3.7 and 3.1 times after releasing in 2003 and 2004 seasons, respectively. Also the mean number of parasitoids/infected scale increased in the treatment than in the control. Using the given equation, the actual increasing percent of parasitation were 27.7 and 34.7% in 2003 and 2004 seasons, respectively.
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