ECOLOGICAL STUDIES ON THE IMMATURE STAGES OF THE COTTON LEAFWORM SPODOPTERA LITTARALIS (BOISD.) IN SHARKIA GOVERNORATE
EL-ZOHAIRY, M., METWALLY, E., NASR, E., EL-SEBAY, Y., RADWAN, S., DESUKY, W. (1994). ECOLOGICAL STUDIES ON THE IMMATURE STAGES OF THE COTTON LEAFWORM SPODOPTERA LITTARALIS (BOISD.) IN SHARKIA GOVERNORATE. EKB Journal Management System, 72(4), 1033-1050. doi: 10.21608/ejar.1994.454526
MANSOUR M. EL-ZOHAIRY; EL-SAYED M. METWALLY; EL-SAYED A. NASR; YOUSRY EL-SEBAY; SAMER M. E. RADWAN; WAHED M. H. DESUKY. "ECOLOGICAL STUDIES ON THE IMMATURE STAGES OF THE COTTON LEAFWORM SPODOPTERA LITTARALIS (BOISD.) IN SHARKIA GOVERNORATE". EKB Journal Management System, 72, 4, 1994, 1033-1050. doi: 10.21608/ejar.1994.454526
EL-ZOHAIRY, M., METWALLY, E., NASR, E., EL-SEBAY, Y., RADWAN, S., DESUKY, W. (1994). 'ECOLOGICAL STUDIES ON THE IMMATURE STAGES OF THE COTTON LEAFWORM SPODOPTERA LITTARALIS (BOISD.) IN SHARKIA GOVERNORATE', EKB Journal Management System, 72(4), pp. 1033-1050. doi: 10.21608/ejar.1994.454526
EL-ZOHAIRY, M., METWALLY, E., NASR, E., EL-SEBAY, Y., RADWAN, S., DESUKY, W. ECOLOGICAL STUDIES ON THE IMMATURE STAGES OF THE COTTON LEAFWORM SPODOPTERA LITTARALIS (BOISD.) IN SHARKIA GOVERNORATE. EKB Journal Management System, 1994; 72(4): 1033-1050. doi: 10.21608/ejar.1994.454526

ECOLOGICAL STUDIES ON THE IMMATURE STAGES OF THE COTTON LEAFWORM SPODOPTERA LITTARALIS (BOISD.) IN SHARKIA GOVERNORATE

Egyptian Journal of Agricultural Research
Volume 72, Issue 4, December 1994, Pages 1033-1050    PDF (3.26 M)
Document Type: Original Article
DOI: 10.21608/ejar.1994.454526
Authors
MANSOUR M. EL-ZOHAIRY1; EL-SAYED M. METWALLY1; EL-SAYED A. NASR2; YOUSRY EL-SEBAY2; SAMER M. E. RADWAN2; WAHED M. H. DESUKY2
1Plant Protection Department, Faculty of Agriculture, Zagazig University, Egypt
2Plant Protection Research Institute, Agricultural, Research Centre, Dokki, Giza, Egypt
Abstract
The present work was carried out to study the population density of the imature stages of the cotton leafworm Spodoptera littoralis Boisd. in Berseem fields . Samples of egg-masses taken from 15 locations over 4 years had shown that the pest had 3 generations. The first started in the third week of May, the second in the third week of June and the third in the first week of August. The second generation was the largest as indicated by the number of egg-masses collected. The second gener­ation came next followed by the first. No significant differences were found between the immature stages collected from the several locali­ties. The least number of immatures occurred during March, and the highest during May.
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