| Author(s) | S. Al-Rehiayani and A.A. Farahat |
| Affiliation | Plant Protection Department, College of Agriculture & Veterinary Medicine, King Saud University, Al-Qassim , Saudi Arabia |
| Title | A Survey of Plant-parasitic Nematode Genera in Al-Qassim Governorates, Saudi Arabia 1. The Farms of Buraidah City and Unayzah, Al-Bukeriah, Al-Badaee Governorates |
| Source | Journal of King Saud University. Agricultural Sciences. Volume 17, No 1. (2005/1425) |
| Abstract | A survey study of plant parasitic nematodes associated with different crops was conducted in the farms of Unayzah, Al-Al-Bukeriah, Al-Badaee (the middle governorates of Al-Qassim area) and Buraidah City. A total of 891 plant and soil samples were collected. Results indicated the presence of 15-20 plant-parasitic nematode genera of which Meloidogyne, Helicotylenchus, Tylenchorhyncus, Tylenchulus, Heterodera, Ditylencus and Hemicriconemoides were of common dominance. Rotylenchulus recorded for the first time in Al-Qassim area, was found in Unayzah Governorate in high population densities associated with date palm, pomegranate, alfalfa and squash. Meloidogyne and Helicotylenchus were more widely distributed in fruit orchards than in annual crops. Tylencherhynchus, Heterodera, Hemicriconemoides and Ditylenchus are of common association with field crops. Nematode genera were more frequent in Unayzah. However; Heterodera and Hemicriconemaides had the highest frequencies in the farms of Buraidah. The greatest population densities of Meloidogyne, Helicotylenchus and Tylenchulus were recorded in Al-Badaee. Most nematode genera of highly economic importance were commonly associated with date palm in all sites. However; citrus were mainly infected with the citrus nematode Tylenchulus, alfalfa with Pratylenchus and Ditylenchus, and wheat with Heterodera. Trophonema was found in the farms of Unayzah, Al-Badaee and Buraidah, and that was the first record of this nematode in Saudi Arabia. |
