First report of bacterial wilt caused by Ralstonia solanacearum in Ghana, West Africa.
Tomato and pepper plants exhibiting wilt symptoms were collected from fields in 7 villages in Northern (Vea, Tono, Pwalugu), Ashanti (Agogo, Akumadan) and Brong Ahafo (Tanoso, Tuobodom) regions of western Ghana, in November 2012. The plants were wilted without leaf yellowing or necrosis. Disease incidence was generally low, with less than 20% symptomatic plants observed. Most of the plants collected produced visible bacterial ooze in water in the field. The causal pathogen was identified as Ralstonia solanacearum based on cultural, genetic (PCR) and pathogenicity analyses. This is thought to be the report of bacterial wilt caused by R. solanacearum in Ghana.