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Journal of Plant Protection and Pathology
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Abd El-Kareim,, A., Awadalla, S., Bleih, S., Taman, A. (2007). IMPORTANT FACTORS AFFECTING ON INFESTATION MAIZE EAR BY THE PINK CORN WORM Pyrodeces simplex (WLSM.) (LEPIDOPTERA: COSMOPTERYGIDAE). AT KAFR EL-SHEIKH REGION.. Journal of Plant Protection and Pathology, 32(12), 10583-10591. doi: 10.21608/jppp.2007.221219
A. I. Abd El-Kareim,; S. S. Awadalla; S. B. Bleih; A. A. Taman. "IMPORTANT FACTORS AFFECTING ON INFESTATION MAIZE EAR BY THE PINK CORN WORM Pyrodeces simplex (WLSM.) (LEPIDOPTERA: COSMOPTERYGIDAE). AT KAFR EL-SHEIKH REGION.". Journal of Plant Protection and Pathology, 32, 12, 2007, 10583-10591. doi: 10.21608/jppp.2007.221219
Abd El-Kareim,, A., Awadalla, S., Bleih, S., Taman, A. (2007). 'IMPORTANT FACTORS AFFECTING ON INFESTATION MAIZE EAR BY THE PINK CORN WORM Pyrodeces simplex (WLSM.) (LEPIDOPTERA: COSMOPTERYGIDAE). AT KAFR EL-SHEIKH REGION.', Journal of Plant Protection and Pathology, 32(12), pp. 10583-10591. doi: 10.21608/jppp.2007.221219
Abd El-Kareim,, A., Awadalla, S., Bleih, S., Taman, A. IMPORTANT FACTORS AFFECTING ON INFESTATION MAIZE EAR BY THE PINK CORN WORM Pyrodeces simplex (WLSM.) (LEPIDOPTERA: COSMOPTERYGIDAE). AT KAFR EL-SHEIKH REGION.. Journal of Plant Protection and Pathology, 2007; 32(12): 10583-10591. doi: 10.21608/jppp.2007.221219

IMPORTANT FACTORS AFFECTING ON INFESTATION MAIZE EAR BY THE PINK CORN WORM Pyrodeces simplex (WLSM.) (LEPIDOPTERA: COSMOPTERYGIDAE). AT KAFR EL-SHEIKH REGION.

Article 16, Volume 32, Issue 12, December 2007, Page 10583-10591  XML PDF (554.62 K)
Document Type: Original Article
DOI: 10.21608/jppp.2007.221219
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Authors
A. I. Abd El-Kareim,1; S. S. Awadalla1; S. B. Bleih2; A. A. Taman2
1Economic Entomology Dept. Fac. of Agric., Mansoura Univ.
2Plant Protection Institute. Sakha Agriculture Research station
Abstract
Bink corn worm, Pyroderces simplex (Wlsm.) (= gossypiella Wlsm.) was attacked maize ear in the end season maize crop at the experimental Farm of Sakha Agric. Res. St., Egypt during the period 2004 and 2006. The eggs and larvae of P. simplex were found to be preying by one specie, Blaptostethus picus var pallescens Poppius. The peak of predator was recorded in the first week of September 2004was (178 individual/25ears) while the peak of this predator in the second season 2005 was (170 individual/25plants.
Full grown larvae feed on and bore into the dry kernels. Larvae may also feed between kernels rows. The mean numbers of larvae/25ear affected by different growth stages of maize ear and maize crosses.
The average numbers of the predator B. picus was 74.63 individual/100plants in the first season 2004. On the other hand the average numbers of the predator in the second season 2005 was 99.00 indivedual/100 plants.
The highest mean numbers of P. simplex larvae in different maize crosses were during the Physiological maturing stage and the lowest mean numbers during the Dough stage in the two successive seasons 2005 and 2006.
The highest mean numbers of P. simplex larvae were recorded in variety Bioner 3062 (4.03 larvae/ear) which uncovering with husks. On the other hand the variety SC10 was the lowest mean numbers of larvae (1.37 larvae/ear) which Cub husks tightly covering ear tip. The percentage of oil which obtained from Bioner 3062 recorded the highest percentage (6.81%) and attractive the highest mean numbers of larvae (4.03 larvae/25ears). On the other hand variety SC10 recorded the lowest percentage of oil (4.07%) and attractive the lowest mean numbers of larvae (1.37 larvae/25ear).  
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