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. Egyptian Journal of Agricultural Research, 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". Egyptian Journal of Agricultural Research, 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', Egyptian Journal of Agricultural Research, 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. Egyptian Journal of Agricultural Research, 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
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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