| Titles |
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English :
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IMPACT OF PLANTING DATES ON INFESTATION OF COWPEA PLANTS WITH PESTS
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Arabic :
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تأثير مواعيد الزراعة على إصابة نباتات اللوبيا بالآفات
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| Abstract |
Two years of field studies were carried out to study the effect of three planting dates of cowpea, April 1st, 15th and 30th, on the levels of infestation by different pests, namely: Tetranychus urticae, Tetranychus cucurbitacearum and whitefly, Bemisia tabaci as well as Thrips tabaci. Also, the resultant yield was recorded.
Results may be summarized as follows:
Data revealed that the numbers of different stages of T. urticae were increased by delaying the planting date on cowpea plants. Plant cultivated on April, 1st, 15th and 30th harbored 0.48, 1.40 and 2.15 eggs, 0.42, 0.72 and 1.31 mobiles, 0.90, 2.11 and 3.46 totals / leaflet, respectively.
The earliest planting date harbored the fewest mean number of T. cucurbitacearum, eggs, mobiles and total (0.40, 0.03 and 0.43/leaflet, respectively).
Lately sowing correlated with plants showed the lowest infestation by different stages of white fly, B. tabaci [0.33 (eggs/leaflet), 0.12 (nymphs/leaflet) and 0.04 (pupae/leaflet), 0.03 (adult/plant) and 0.51 (individuals of total stages)].
The results included that the abundance of Thrips tabaci individuals increased only in the early planting date, mean rates of infestation in two seasons were (0.06, 0.05 and 0.02 nymphs, 0.01, 0.01 and 0.00 adult, 0.06, 0.05 and 0.02 individuals of total stages/leaflet respectively).
Finally, the sowing in the earliest date (April, 1st) lead to have the highest dry pods' yield and the lowest infestation by the spider mites, T. urticae & T. cucurbitacearum.
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| Publication year |
2010
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| Pages |
1120-1139
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
الجيزة
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| serial title |
Egypt. J. Agric. Res
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| ISSN |
6336-1110
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| Author(s) from ARC |
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| External authors (outside ARC) |
عزت فرج الخياط
قسم وقاية النبات – كلية الزراعة – جامعة بنها
فارس أمين اللقوة
قسم وقاية النبات – كلية الزراعة – جامعة بنها
جــاد حمادة حسن راضى
قسم وقاية النبات – كلية الزراعة – جامعة بنها
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| Publication Type |
Journal
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