| Titles |
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English :
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Threshold temperatures and thermal requirements of the lesser cotton leafworm Spodoptera Exigua Hb.
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Arabic :
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عتبة النمو والحتياجات الحرارية لدودة ورق القطن الصغرى
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| Abstract |
SUMMARY
The present investigation aimed to study the effect of three constant temperatures (20, 25, and 30°C) on the developmental rates of different stages of the lesser cotton leafworm Spodoptera exigua. The incubation period, larval duration, pupal duration, pre-oviposition period and duration of generation were estimated. The time required for development was decreased as the temperature increased. The threshold temperatures were 13.15°C for egg, 9.64 °C for larvae, 11.07 °C for pupae 9.64°C for pre-oviposition period and 10.67 °C for generation. The average thermal requirements needed for completing the development were 36.0, 196.1, 111.29, 29.06 and 368.3 degree-days for egg, larvae, pupae, pre-oviposition period and generation, respectively.
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| Publication year |
2006
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| Pages |
271-281
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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 |
القاهرة
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| serial title |
مجله الجمعية المصرية لعلم الحشرات
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| ISSN |
1110-7162
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Growth rate.
Spodoptera exigua.
Temperature.
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| Publication Type |
Journal
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