SEASONAL ABUNDANCE OF APHIDS ON THREE COMMON BEAN VARIETIES, AT QALYUBIA GOVERNORATE, EGYPT | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 10, Volume 34, Issue 9, September 2009, Page 9771-9786 PDF (790.32 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2009.217268 | ||||
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| Authors | ||||
| Abeer S. Abd El-Wahab,1; M. A.K. El–Sheikh1; Mahasen A. Mora2; M. A. El-Hariry2 | ||||
| 1Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt.! | ||||
| 2Piercing Sucking Insects Research Department, Plant Protection Research Institute, Agriculture Research Center,Dokky ,Giza,Egypt. | ||||
| Abstract | ||||
| This investigation was conducted at Qaha Agricultual Station, Qalyubia Governorate to survey the aphid fauna on three common bean varieties; Bronco, Polista and Contender and to study their seasonal abundance and the impact of varieties and sowing dates (Summer & Nili plantation) during the growing seasons 2005/2006 and 2006/2007 on the infestation rates with aphids. The obtained results reveled, 11 different aphid species in both growing seasons; A. kondoi was recorded for the first time in Egypt. From 6 to 9 species were recorded on the different plantations. Aphis fabae was the most common aphid species recorded in a relatively high number (995.9 & 466.66 individuals) also a general average in both seasons, followed by A. craccivora which, recorded (480.25 and 258.9 individuals) as general average on both seasons. A. pisum was the most dominant aphid species on summer the plantation on all varieties although its general average was not very high ( 6106 & 113.87 individuals),while both of Aphis fabae and A. craccivora were the most common aphids on nili plantation throughout the period of study on all varieties. First season; 9 aphid species (A. pisum, D. sonchi, A. craccivora, T. triffolii, M. persicae, S. graminum, A. fabae, A. gossypii, and R. padi) were recorded on "Bronco" in the summer plantation, The most common aphid was, A. pisum; its peak number was 22.67 individuals/ plant) occurred in mid April (summer plantation). A. fabae was recorded in late Nov., its peak was (506.7 individuals/plant) on Bronco variety in the nili plantation, while, A. pisum was occurredin a few numbers estimated by an average of (22.7)individuals plant . A. fabae was the most abundant species on "Polista" variety in the summer plantation. its peak was 591.7 individual/plant in late Nov., A.pisum was occurred on "Contender" variety, its peak (44.3 individuals/plant) occurred in mid April.While, A. fabae had two peaks, (470 & 440 individuals /plant) in early & late Nov., respectively on "Contender" variety. Second season: A. pisum its peak number was (12.7 individuals/plant) occurred in mid April., on "Bronco" in the summer plantation ,while in the nili plantation, A. fabae was the highly abundant one, and its peak number (265 individuals /plant) occurred in late Nov.,. T. trifolii appeared in a peak number (11.3 individuals/ plant) in mid April. on "Polista in the summer plantation , while ; A. fabae was recoreded from late Oct., to mid Dec., its peak was (267 individuals /plants) in late Nov.,. A.pisum peak number (32 individuals/plant) was recorded in mid April. on "Contender" variety summer plantation. Also, it found in a higher average number in the summer plantation than in the nili one. Whereas; the highest abundant species appeared in this plantation was A. fabae its peak number (223.3 individuals/plant) was in mid Nov. Generally speaking, the obtained results declared the aphid infestation was high in the nili plantation than in the summer, common bean plant variety contender was the least infested ones | ||||
| Keywords | ||||
| Aphis species; seasonal abundance; bean varieties; bean plantation | ||||
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