| Titles |
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English :
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Effect of climatic factors, predators and plant age on the population dynamics of Empoasca decipiens and Thrips tabaci on kidney bean plants.
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Arabic :
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تأثير العوامل الجوية والمفترسات وعمر النبات على ديناميكيه تعداد الجاسيد وتربس القطن على نبات الفاصوليا
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| Abstract |
The present work was carried out to study the effect of climatic factors (temperature and relative humidity), associated predators (Coccinella undecimpunctata l., Scymnus interruptuus Coeze, Chrysoperla carnea (Steph.) and Orius albidipennis (Reut).) and plant age on the population density of Empoasca decipiens Paoli and Thrips tabaci Lind. infesting bean plants during two successive seasons. Plant age effect was considered as third degree of polynomial. The results indicated that, jassids population were higher than thrips and had one peak of abundance on May 28th and 27th and thrips population had one peak of abundance on May 14th and 20th during 2005 and 2006 seasons, respectively. Concerning the total predators, two peaks occurred during May and June in both seasons. The population of E. decipiens was affected insignificantly by climatic factors in the two seasons. While the predators had significant positive effect on jassid population during two seasons. The population of T. tabaci was affected insignificantly by the climatic factors and predators in the two seasons expect for minimum temperature which affected in the first and second season. Plant age affected the population significantly in the first and second seasons. This mean that, the plant age had more effect on jassid and thrips population compared with the role of climatic factors and predators. The explained variance due to plant age was (87.76 and 95.41 %) for jassid, (92.08 and 76.94%) for thrips during two seasons. Plant age is expected to reflect leaves content of nutritional values according to plant phenology.
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| Publication year |
2007
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| Pages |
693-702
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
الشرقية
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| serial title |
المجلة المصرية للعلوم التطبيقية
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| ISSN |
1110-1571
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Age.
Climatic factors.
Effectors.
Empoasca.
Kidney beans.
Plants.
Population dynamics.
Predators.
Thrips tabaci.
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| Publication Type |
Journal
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