| Titles |
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English :
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Field and laboratory studies to evaluate five soybean varieties for their relative susceptibility to the two spotted spider mite Tetranchus urticae koch infestation (Acarina : Tetranychidae : Actenididea)
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Arabic :
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دراسات حقلية ومعملية لتقييم قابلية الإصابة لخمسة أصناف فول صويا للإصابة بالاكاروس ألعنكبوتي ذي البقعتين Tetranchus urticae Koch (Acarina: Tetranychidae: Actenididea)
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| Abstract |
Field and laboratory studies were carried out to evaluate five soybean varieties, Giza21- Giza 22- Giza 35 Giza111 and Crawford, for their relative susceptibility to the two-spotted spider mite Tetranchus urticae as one of the main pests causing a great damage to soybeans. Obtained data cleared that the peak populations of spider mites occurred during mid of July or during the flowering and pod-formation according to each variety. Crawford& Giza 111 were highly susceptible, respectively. They aggregated 9985 & 8542 mites during the season 2006, while Giza 35 &Giza 21 were highly tolerant at the same trend, which harboring 3418 &4140 mites, but Giza 22 was intermediate. Biological aspects of spider mites affected strongly by soybean varieties, as well as leaves phytochemical components, where as the average period from egg hatching to adult ^mergence which ranged from 5.9 to 9.6 days. Histological studies on leaves of soybean variety demonstrated that the more thickness of the cuticle epidermis especially that the lower surface could be considered as a physical tolerance factor against mechanism of spider mites, therefore, it could be recommended that adding potassium fertilizer necessary for different crops.
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| Publication year |
2008
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| Pages |
77-87
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| Availability location |
معهد بحوث وقاية النباتات
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| Availability number |
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
الجيزة
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| serial title |
المجلة المصرية للبحوث الزراعية
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| ISSN |
1110-6336
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| Author(s) from ARC |
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| Agris Categories |
Protection of plants - General aspects
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AGROVOC
TERMS |
Field experimentation.
Laboratory experimentation.
Soybeans.
Tetranychus urticae.
Varieties.
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| Publication Type |
Journal
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