ASSESSING LOSSES IN MAIZE YIELD AND LARVAL SURVIVAL DUE TO DIFFERENT TIMINGS OF INFESTATION BY EUROPEAN CORN BORER, OSTRINIA NUBILALIS (H B N.) IN LOWER EGYPT
SADEK, S., METWALLY, A. (2002). ASSESSING LOSSES IN MAIZE YIELD AND LARVAL SURVIVAL DUE TO DIFFERENT TIMINGS OF INFESTATION BY EUROPEAN CORN BORER, OSTRINIA NUBILALIS (H B N.) IN LOWER EGYPT. EKB Journal Management System, 80(3), 1107-1116. doi: 10.21608/ejar.2002.311902
SADEK E. SADEK; ABDEL-REHIM S. METWALLY. "ASSESSING LOSSES IN MAIZE YIELD AND LARVAL SURVIVAL DUE TO DIFFERENT TIMINGS OF INFESTATION BY EUROPEAN CORN BORER, OSTRINIA NUBILALIS (H B N.) IN LOWER EGYPT". EKB Journal Management System, 80, 3, 2002, 1107-1116. doi: 10.21608/ejar.2002.311902
SADEK, S., METWALLY, A. (2002). 'ASSESSING LOSSES IN MAIZE YIELD AND LARVAL SURVIVAL DUE TO DIFFERENT TIMINGS OF INFESTATION BY EUROPEAN CORN BORER, OSTRINIA NUBILALIS (H B N.) IN LOWER EGYPT', EKB Journal Management System, 80(3), pp. 1107-1116. doi: 10.21608/ejar.2002.311902
SADEK, S., METWALLY, A. ASSESSING LOSSES IN MAIZE YIELD AND LARVAL SURVIVAL DUE TO DIFFERENT TIMINGS OF INFESTATION BY EUROPEAN CORN BORER, OSTRINIA NUBILALIS (H B N.) IN LOWER EGYPT. EKB Journal Management System, 2002; 80(3): 1107-1116. doi: 10.21608/ejar.2002.311902

ASSESSING LOSSES IN MAIZE YIELD AND LARVAL SURVIVAL DUE TO DIFFERENT TIMINGS OF INFESTATION BY EUROPEAN CORN BORER, OSTRINIA NUBILALIS (H B N.) IN LOWER EGYPT

Egyptian Journal of Agricultural Research
Article 12, Volume 80, Issue 3, September 2002, Page 1107-1116  XML PDF (2.95 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2002.311902
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Authors
SADEK E. SADEK1; ABDEL-REHIM S. METWALLY2
1Field Crops Research Institute, Agricultural Research Centre, Giza, Egypt
2Plant protection Research institute, Agricultural Research Centre, Dokki, Giza, Egypt.
Abstract
Trails were carried out at Gemmeiza Agricultural Research Sta­tion, Gharbia Governorate to study the effect of maize plant age (30, 45 and 60 days old), as a natural host of the European corn borer Ostrina nub-tails on larval survival, as well as , the effect of different timings of maize infestation on grain yield obtained . Considerable number of larvae had been found on the plants infested at the age of 60 days and count­ed 6 , 10 , 18 and 35 days after egg hatching . Maize plants during an-thesis are highly susceptible to ECB moths oviposition . An artificial infes­tation made at anthesis stage of maize plant growth resulted in the highest infestation and the lowest grain yield obtained . The average yield reduction relative to the control was 33.3 %, 15.9 % and 7.2 % for maize plants infested with ECB egg masses at the age of 60 , 45 and 30 days old, respectively. Weight of 100 kernels as one of yield compo­nents was the great affected by the borer infestation and consequently caused yield losses .
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