Potatoes are grown in a broader range of altitudes, latitudes, and climatic conditions than any other major food crop. However, most major potato crop constraints cut across ecoregions, that is, across specific geographical areas and the agroecologies they comprise, such as the temperate zones and the tropical and subtropical higlands in the Andean countries of Latin America. Without any doubt, among the most important potato problems related to plant parasitic nematodes as production limiting factors are the potato cyst nematodes (Globodera rostochiensis and G. pallida) and the potato rosary nematode (Nacobbus aberrans). The factors which make these nematodes so important in potato production (i.e., losses, distribution, races, hosts, dissemination, diagnosis, alternative crops, efficient control measures, resistance and interaction with other organisms) as well as the development of strategies for their integrated management being conducted in several Andean countries of Latin Amer
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