EFFECT OF SOME PRACTICES ON ONION BULB PESTS IN FAYOUM GOVERNORATE | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 9, Volume 90, Issue 2, July 2012, Page 597-604 PDF (198.6 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2012.160172 | ||||
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| Author | ||||
| IBRAHEM M. SABRA | ||||
| Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt. | ||||
| Abstract | ||||
| Field and store experiments were curried out in Fayoum governorate, during 2008/9 and 2009/10 seasons to evaluate the role of certain integrated management procedures in the field (planting date, over irrigation and intercropping) and in the store (variety, storage place and onion layer thickness) in reducing infestation percentage of onion bulb pests; Eumerus amoenus Loew, Carpophilus spp., Atherigona orientalis Schin and Ephestia cautella (Walker). Results showed that, the infestation percentages were slightly affected with planting date which were insignificant higher in early planting date in the beginning of November than in the beginning of December, while strongly affected with over irrigation and intercropping which were higher in over irrigated and intercropped treatments than control for the previous pests during both seasons. During storage, infestations were slightly affected with variety during both seasons for the first three pests, while it was significant higher on Behery var. than Giza 20 var. during the first season for E. cautella only. The bulbs infestation percentages for E. amoenus, Carpophilus spp.and A. orientalis in case of indoor treatment were significantly lower than in outdoor treatment during both seasons, with exception of E. cautella only. Also increasing layer thickness of bulbs in the store (60 cm.), increased the infestation percentage for the first three pests while reducing the infestation percentage of E. cautella during both seasons. Regardless of variety the results emphases that prevent of water stress and intercropping after bulb formation in the field and storing onion bulbs in aired and shaded store with 30 cm height were useful to reduce infestation of onion bulb pests during storage. | ||||
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