| Titles |
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English :
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Assessment of yield losses in maize field caused by ostrinia nubilalishbn. (lepidoptera : pyralidae) at fayoum governorate
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Arabic :
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تقدير الفقد في محصول الذرة الشامية الناتج عن الإصابة بدودة الذرة الأوربية Ostrinia nubilalis Hub.
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| Abstract |
The yield loss in maize caused by European corn borer (ECB) Ostrinia nubilalis was investigated in Fayoum Governorate, Egypt in 2003 and 2004 seasons. Results showed that ECB larvae caused damage in both ear (shank, grain and ear top) and stalk at different levels of the plant (tassel, tassel + one leaf, tassel + two leaves, tassel + three leaves and at ear level). The total percent of infested plants with ECB were 29.2% (10.5 stalks + 18.7 ears) and 28.6% (10.3 stalks + 18.3 ears) in 2003 and 2004 seasons, respectively.
Based on the data obtained from simulated and natural infestation using a given equation, yield loss could be estimated by field survey of the number of stems broken at different plant levels. The actual loss in grain yield was 0.38 and 0.31 kg/100 plants in 2003 and 2004 seasons, respectively, compared to 0.35 and 0.29 kg/100 plants estimated by the given equation. The differences between the actual and estimated loss in yield is not considerable. This finding ascertains that the use of such equation facilitate the assessment of ECB damage to maize plants through field observation of infestation symptoms as broken stems only.
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| Publication year |
2005
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| Pages |
831-838
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| Availability location |
معهد بحوث وقاية النبات – ش نادى الصيد – الدقى – جيزة
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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 |
Harvesting losses.
Lepidoptera.
Maize.
Ostrinia nubilalis.
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| Publication Type |
Journal
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