Bean (Phaseolus vulgaris) is the second most important crop in Mexico after corn due to the high consumption of beans in all regions of the country. In the winter (January 2016), bean plants showing wilting, root discoloration and necrosis were observed, with an incidence of approximately 30% in different fields (<1 ha) in Tecoanapa, Guerrero State, Mexico. Symptomatic fine roots (<2 mm) were cut into 0.
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