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This study assessed the diversity of plant parasitic nematodes associated with tomatoes in two major tomato producing districts. A total of 40 composite soil and root samples were collected, and extracted nematodes were identified morphologically to a genus level, however,  Meloidogyne arenaria  was identified based on molecular methods. Accordingly, eight plant parasitic nematode genera were identified, including  Meloidogyne ,  Pratylenchus ,  Helicotylenchus ,  Scutellonema ,  Rotylenchulus ,  Criconema ,  Paratylenchus,  and  Globodera . The highest prominence value was recorded for  Meloidogyne  and the lowest being for  Paratylenchus . In terms of  Meloidogyne  infestation, the highest mean root knot incidence was in the Dedo district, specifically at the Babo peasant association, where  Meloidogyne  could be considered a major threat to tomato production. The study further indicated that  Meloidogyne  density was higher in soil with a pH between 6.4 and 7.4, and an altitude above 1800 m. This result implies the need for immediate attention and implementation of feasible management strategies to reduce the damage caused by  Meloidogyne sp .

Prevalence of major parasitic nematodes associated with tomatoes ( Solanum lycopersicum L.) in two districts of Jimma, Ethiopia