ECOLOGICAL STUDIES ON SOME IMPORTANT INSECT PESTS OF OLIVE TREES IN EL-FAYOUM GOVERNORATE, EGYPT | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 11, Volume 81, Issue 2, July 2003, Page 563-571 PDF (1.62 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2003.276569 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| AIDA M. EL-HAKIM; SALWA K. HANNA; AHMED M. Z. MOSALLAM | ||||
| Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| The inter-relationship between population density of both Leacaspis riccae Targ. (Homoptera, Diaspididae) and Patella unionalis Hb. (Lepidoptera, Eyraustidae) on olive trees in El- Fayoum Governorate and three climatic factors (temperature, R.H. % and sunshine periods) was studied during the two consecutive years of 1999 and 2000. It was found that the population of L. riccae had 4 peaks and insignificantly correlated with the three tested environmental factors during the two years of investigation. Whereas, R.H. % significantly affected the population fluctuations of larvae of P. unionalis that had 2 and 3 peaks during 1999 and 2000, respectively. The highest mean numbers of larvae were recorded during spring months, whereas the lowest ones were recorded during summer season throughout the two years of investigation. | ||||
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