EVALUATION OF PRESENT PEST MANAGEMENT PRACTICES FOR THE POMEGRANATE WHITEFLY, SIPHONINUS PHILLYREAE IN UPPER EGYPT | ||
| Egyptian Journal of Agricultural Research | ||
| Article 15, Volume 80, Issue 3, September 2002, Pages 1143-1155 PDF (4.38 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.2002.311906 | ||
| Author | ||
| ASHRAF A. H. MANGOUD | ||
| Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt | ||
| Abstract | ||
| Field trails were carried out to evaluate certain pest management practices for the pomegranate whitefly, Siphoninus phillyreae (Haliday) (Homoptera : Aleyrodidae) in Upper Egypt fields (Assiut Governorate) during 2000 season. Spray oil (Masrona) showed 91.0% average mortality for eggs, 51.9% against nymphs and 18.4% for adults. Masrona oil gave 28.1% and 61.8% reduction against mature and immature stages of the parasitoid, Encarsia inaron Walker (Hymenoptera : Aphelinidae), respectively. Buprofezin and pyriproxyfen gave 8.2 and 17.8% mean mortality, respectively against adults of S. phillyreae. while they showed 94.1 and 88.6% against nymphs, respectively. The direct effect on eggs showed only 15.2 and 17.2% mean mortality, respectively. The two IGRs showed low toxicity against mature stages of the parasitoid (12.5 and 21.1%, respectively), while showed moderate toxicity against immature stages (42.5 and 57.4%, respectively). Malathion was very effective against adults and nymphs of S. phil-lyreae and also killed the parasitoid. Malathion showed 95.4, 98.0 and 11.6% mean reduction against adults, nymphs and eggs of S. phillyreae, and over 98% average reduction on the parasitoid. respectively. About 25,000 adults (5000 adults/month) of the E. inaron were released at five times between June to October 2000. The natural parasitism rate of E. inaron was 9.6 and 9.8% in tow plots. The rate of parasitism in realising plot increased to reach 72.5% by the end of the season, while reached 19.6% in no-releasing plot. Using sticky material bands prevented ants from climbing into infested trees. Pruning pomegranate trees, collecting pruned parts and dropped leaves and burning them directly reduced infestation by more than 40%. | ||
|
Statistics Article View: 52 PDF Download: 197 |
||
