Submitted to: Nematropica
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: March 25, 1998
Publication Date: N/A
Interpretive Summary: Nematodes are microscopic worms that cause eight billion dollars of crop loss in the U. S. each year. Lesion nematodes (Pratylenchus spp.) are an important group of nematodes which cause serious damage to many kinds of economic plants on a world-wide basis. One problem with determining the extent of crop loss due to plant-parasitic nematodes is that the nematodes present in many areas are unknown. The objective of this work is to document some economically important plant nematode species that exist in the Sultanate of Oman. This paper reports the host range, population density, and distribution of lesion nematodes. It clarifies the presence of 12 known species of lesion nematodes. It helps in understanding the importance of Pratylenchus spp. based on host range, population density, and distribution. This report will serve as a useful guide to researchers in planning future research, revising quarantine strategies, and identifying economically important species.
Surveys were carried out in several regions of the Sultanate of Oman during cropping seasons from 1990-1997, and data on occurrence, population density, and distribution of lesion nematodes (Pratylenchus spp.) were recorded. Twelve species of Pratylenchus were recorded in association with 27 families, including 21 vegetables, 19 fruit and tree crops, 16 field crops, and one ornamental. Eleven known species of Pratylenchus are reported in the country for the first time. Among them, P. jordanensis was the most frequently observed nematode species in association with 37 crops and was found widely distributed in all regions. P. brachyurus, P. delatteri, P. neglectus, P. scribneri, and P. zeae were the other important species found in the country.