Originally published in Midwest Vegetable Variety Trial Report for 2006. Compiled by Elizabeth T. Maynard and Christopher C. Gunter. Bulletin No. B18048. Dept. of Horticulture and Landscape Architecture and Office of Agricultural Research Programs, Purdue University, W. Lafayette, Indiana. December 2006.


Bacterial spot of tomatoes (Xanthomonas campestris pv. vesicatoria) causes lesions on leaves, stems and fruit. Under conditions of hot, humid, rainy weather, defoliation can result in a loss of yield. In addition, lesions on fruit result in a direct loss of marketability. This disease is managed primarily with applications of fixed copper bactericides, crop rotations, greenhouse sanitation and healthy seed/transplants. Even in properly managed commercial fields, however, bacterial spot can cause yield losses. Although there are no varieties with complete resistance to bacterial spot, we report here the results of an on-farm trial that indicates some varieties may have partial resistance.


variety trials, tomatoes, vegetables, Lycopersicon esculentum, Xanthomonas campestris pv. vesicatoria, bacterial diseases of plants, Solanum lycopersicum

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