| Titles |
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English :
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Assessment Of Yield Losses In Maize Field Caused By Ostrinia Nubilalis Hbn. (Lepidoptera : Pyralidae) At Fayoum Governorat
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Arabic :
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تقدير الفقد في محصول الذرة الشامية الناتج عن الإصابة بدودة الذرة الأوربية Ostrinia nubilalis Hbn
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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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| URL |
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| Publication year |
2005
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| Pages |
831-838
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| Availability location |
معهد بحوث وقاية النباتات-- 7 شارع نادى الصيد - الدقى- الجيزة
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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 |
Egypt. J. Agric. Res
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Crop losses.
Fruit.
Infestation.
Ostrinia nubilalis.
Stems.
Zea mays.
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| Publication Type |
Journal
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