THE TRIANGULAR RELATIONSHIP BETWEEN COTTON TRANSPLANTING, PLANTING DATES AND THE POPULATION DENSITY OF SAP SUCKING PESTS | ||||
Egyptian Journal of Agricultural Research | ||||
Article 2, Volume 78, Issue 4, December 2000, Page 1449-1476 PDF (9.53 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejar.1998.399703 | ||||
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Authors | ||||
SAMER M. E. RADWAN1; ZEDAN H. ABDEL-HAMID2; GAMEL B. EL-SADAANY2; MOHAMED A. ROMEILAH1 | ||||
1Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt | ||||
2Faculty of Agriculture, Ain-Shams University, Cairo, Egypt | ||||
Abstract | ||||
The present work was carried out to study the changes in the population dynamics of the sap sucking insects in the transplanted cotton and sown seed cotton during three successive cotton growing seasons (1993, 1994 and 1995) at Gharbia & Kafr El-Sheikh Governorates. To facilitate the presentation of data, each locality was discussed separately. The infestation by sap sucking insects, Thrips tabaci, Aphis gassypii, Ernpoasca lybica and Bernisia Tabaci in cotton plants were estimated during the whole period of investigation in the three localities. Cotton grown by seeds received the highest infestation level, while cotton cultivated by transplanting of cotton seedlings harbored the least level. However, sown seed cotton field gave more yield. | ||||
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