| Titles |
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English :
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Population density of tetranychus cucurbitacearum (sayed) and bemisia tabaci (genn.) on certain soybean varieties in relation to some weather factors and leaf chemical contents.
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Arabic :
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الكثافة العددية للعنكبوت الأحمر Tetranychus cucurbitacearum (sayed) والذبابة البيضاء bemisia tabaci (genn.) على بعض أصناف فول الصويا وعلاقتها ببعض الظروف الجوية والمكونات الكيماوية للأوراق
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| Abstract |
The population density of the spider mite, Tetranychus cucurbitacearum (Sayed) and the white fly, Bemisia tabaci (Genn.) were evaluated on three soybean varieties ( Giza21, Giza22 and Gizal 11) at Sakha Agric. Res. Station Farm, Kafr El-Sheikh during seasons of 2003 and 2004 as well as its relation to some prevailing weather factors and chemical contents of leaves.
The obtained results indicated that in the first season, the highest numbers of the spider mite existed on Gizalll, while Giza21 harbored the least numbers. During the second season, there were no significant differences between the three varieties As for the white fly, Giza21 and Gizal l l were the highest infested variety in the first and second season, respectively, while Giza22 was the least one in both seasons. Also, the tested varieties exhibited higher numbers of spider mite in the second season than the first one, while the reverse occurred for the white fly.
The population density of both pests was not significantly affected by the prevailing temperature and relative humidity on the tested varieties and the combined effect of the two weather factors on the population was less pronounced in the two study seasons. The population of the spider mite was negatively related to the leaf contents of N., P. ,K., Mn and Fe, while the reverse was recorded for the white fly. The population of both pests were negatively correlated with the total phenols.
Thus, the obtained results are of a great importance as they are taken into account in planning programs of integrated, pest management.
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| Publication year |
2006
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| Pages |
90-102
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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 |
طنطا
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| serial title |
مجلة البحوث الزراعية
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| ISSN |
1110-032X
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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 |
Bemisia tabaci.
Censuses.
Leaves.
Soybeans.
Tetranychus.
Weather.
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| Publication Type |
Journal
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