| Titles |
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English :
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Applications of Trichogramma evanescens Westwood Hymenoptera: Trichogrammatidae) and Bacillus thuringiensis for controlling the European corn borer, Ostrinia nubilalis Hunber (Lepidoptera: Pyralidae)
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Arabic :
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استخدام طفيل Trichogramma evanescens والبكتريا Bacillus thuringiensis في مكافحة ثاقبة الذرة الأوروبية Ostrinia nubilalis
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| Abstract |
Laboratory and field studies to evaluate the efficiency of biological control agents against one of the main pests, infesting maize plants, the European corn borer, O.strinia nubilalis Hiibner, using inundative releases of the egg parasitoid, Trichogramma evane.scens Westwood alone or integrated with Bacillus thuringiensi.s (B.t.) application were conducted, at Sakha Research Station, Kafr El-Sheikh Govemorate for three successive maize seasons 2001, 2002 and 2003. B.t. applications targeted the larvae escaped from T. evane.scens parasitism during the egg stage. Effect of B.t. on different developmental stages of T. evanescens inside the host eggs was tested under laboratory conditions. A slight reduction of the adult parasitoid emergence was recorded. Based on the three seasons' data, the mean natural parasitization rates on O. nubilalis eggs by Trichogramma in the experimental area were 38.37, 36.00 and 36.82% for 2001, 2002 and 2003, respectively. After two releases, with a total of 96000 parasitoids/feddan, each year, the mean rates of parasitization reached 74.72, 76.83 and 77.23% in the plots treated with the parasitoid alone and 72.90, 74.21 and 75.56% in the plots treated with Trichogramma plus B.t., respectively. Reduction percentages of O. nubilali.s population reached 51.79 and .73.21% in 2001, 52.38 and 73.81% in 2002 and 56.00 and 76.00%in 2003, in the parasitoid released plots alone and in those integrated with B.t. Also, the percentage of infested nodes, average numbers of pores and the damaged numbers of ears and tassels in the plots treated with Trichogramma combined with B.t. were dropped significantly as compared to the control.
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| Publication year |
2004
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| Pages |
21-29
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| Availability location |
معهد بحوث وقاية النبات 7-شارع نادى الصيد-الدقى-جيزة
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| Availability number |
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
القاهرة
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| serial title |
Egyptian Journal of Biological Pest Control
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| Department |
Biological Control
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Bacillus thuringiensis.
Fields.
Integrated pest management.
Ostrinia nubilalis.
Trichogramma evanescens.
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| Publication Type |
Journal
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