|
Population Density Of The Citrus Red Mite (Panonychus Citri) And The Two Spotted Spider Mite (Tetranychus Urticae Koch) On Lemon
N.K. Abukhashim (1), A.R. Hamza (2) and A. E. Gaga (2).
(1) Plant Protection Department, Faculty of Agriculture, El-Fateh University, Libya.
(2) Date Palm Development Bureau, Libya.
Abstract
In Libya, lemon trees are heavily attacked by phytophagous mites leading to severe damage. The population density of the citrus red mite Panonychus citri and the two spotted spider mite Tetranychus urticae were studied on lemon. It was found that temperature and relative humidity play an important role in governing their activity and population dynamics. The number of P. citri reached the highest peak in July at an average temperature of 31.6 C and relative humidity 65%, whereas the lowest number of mites was recorded in December at an average temperature of 14.9 and relative humidity 50%. However, the population density of T. urticae started to increase with the beginning of April at an average temperature of 25.7 C and RH 69% and the number of mites continued to increase to reach the highest peak in July, then started to decrease with the beginning of August to reach the lowest number in December.
|
|
| New Publications |
|
The Arab Scientists in Cooperation with The High Institute of Marine Research. Publish all the researches abstracts, which presented in The Regional Workshop on Marine Sciences and Natural Resources, Tishreen University, Lattakia, Syria, 25-26 May 2004.
|
| New Publications |
|
The Arab Scientists in Cooperation with The Egyptian Society for Biological Control of Pests . Publish all the researches abstracts, which presented in The First Arab Conference of Applied Biological Pest Control, Cairo, Egypt, 5-7 April 2004.
|
| Conferences, Fez |
The First International Symposium on Environnement protection for development Biotechnological aspects. Fez, December
15 – 17, 2004.
|
| Conferences, Syria |
|
The Second Syrian-Egyptian conference in the Agriculture and Food.
Agriculture Faculty, Al-Baath university, Homs, Syria. 25-28 April, 05
|
| Conference,Yemen |
|
Current Status of Plant Protection in Yemen and Future Strategy.
Faculty of Agriculture, Sana'a University, Sana'a, yemen. December 18-20/2004
|
| Conferences Canada |
|
The 9th International Conference of the Orthopterists’ Society
Canada, on August 14 19, 2005
|
| Conferences, Egypt |
|
The First Arab Conference on Applications of Biological Control of Pests in Arab Countries
|
| Workshop,Lebanon |
|
New Workshop
Middle-East Academy for Medicine of Ageing
First Annual Middle-East Age & Aging Meeting
8-11 April, 2004
|
| Publications |
Arab Society for Plant Protection (ASPP) in Cooperation with The Arab Scientists
Publish all the researches abstracts, which presented in the Eighth Arab Congress of
Plant Protection, held in Faculty of Agriculture, Omar Al-Mukhtar University, El-beida
City, Libya, October 12-16,2003
|
|
