1Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
2Plant Protection Department, Faculty of Agriculture, Fayoum University, Egypt
Abstract
The present work was carried out at Faculty of agriculture, Fayoum Univ. under laboratory conditions (25*2°C and 68 ± 5% R.H.). The obtained results are summarized as follow: Third instar larvae of Hymenia recurva/is (Fab.) prefered 6•hosts namly, nettle leaf,wild beet, table beet, spinach, sugarbeet and pigweed. Percentages of attracted larvae on these hosts showed 24.3, 18.5, 17.7, 15.0, 13.7 and 10.5%, respectively. The respective attraction on hosts for egg laying were on table beet, spinach, sugarbeet, wild beet, nettle leaf and pigweed. Hawaiian beet webworm, H. recurvallscomplete its life cycle on all hosts with significant differences in parameters especially pre-oviposition period and rate of egg deposition /9. Lowest period and highest rate were recorded on nettle leaf.
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