| Titles |
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English :
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Effect Of Soybean Varieties And Planting Dates On The Infestation With Certain Pests And Their Associated Parasitoids
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Arabic :
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تأثير أصناف فول الصويا ومواعيد الزراعة علي الإصابة ببعض الآفات والطفيليات المصاحبة لها
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| Abstract |
During 2002 and 2003, a field experiment was conducted in Sakha Research Station, Kafr El-Sheikh Governorate, to compare pests' damage in some soybean cultivars (Giza 21, 22, 35, 82, 83 & 111, Clark, Crawford, Toano, H1L1, H5L5, H4L10 H15L17, F9H2L12 and Holladay), at various sowing dates (21 April, 6 & 18 May and 7 June 2002 or 17 May and 10 June 2003). Also, the parasitoids of the stem fly, Melanagromyza sojae (Zehntner) and whitefly, Bemisia tabaci (Gennadius) were surveyed. Results indicated that cultivars sown on late planting daies had higher popuiation and damage than those sown on earlier ones. Clark and Holladay were the most susceplible soybean varieties for leaf damage. The mean numbers of pores due to the highest infestation with stem fly increased Ín the soybean variety Giza 35. Throughout the two seasons, Giza 83 had the highest percentage of pod infestation among the different varieties, whereas the lowest was recorded in Toano, H4L10 and H1Ll in the first season 2002 and Toano, F9H2L12 then Holladay in 2003. Also, Giza 83 suffered maximum incidence of whitefly adults. The minimum percentage of leaf feeding, number of stem pores, whitefly incidence and M sojae numbers were in H5L5 during the two consecutíve seasons.
Three hymenopterous parasitoids had emerged from the stem borer, M sojae. Through the two successive seasons 2002 and 2003, Halticoptera sp., Sphegigaster sp. and Platynocheílus sp. are collected. Two hymenopterous parasitoids (Encarsia lutae (Masi) and Eretmocerus aegypticus Evan.) emerged from B. tabaci, during the two seasons.
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| Publication year |
2005
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| Pages |
93-104
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| Availability location |
معهد بحوث وقاية النباتات - ش نادى الصيد -الدقى - الجيزة
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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 |
مجلة الجمعية المصرية لعلم الحشرات
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| ISSN |
1110-0885
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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 |
Bemisia tabaci.
Infestation.
Melanagromyza.
Parasitoids.
Pests.
Planting date.
Soybeans.
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| Publication Type |
Journal
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