Bacterial wilt, brown rot
host-range. Race 3 is pretty much restricted to potato and tomato. Whereas other races have optimum temperatures of 35-37 °C, the optimum for Race 3 is 27 °C, which [...] stem. The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish it from [...] irrigation water. Disease incidence is highest when soil moisture is high, such as during rainy periods. When temperature is low, infection may remain latent