Bacterial wilt — Tomato

Symptoms

Wilting first appears on the youngest leaves during hot daytime conditions. Affected plants may recover temporarily during the evening when temperatures fall. Within a few days, sudden and permanent wilting may occur. Under less favourable conditions for disease development, plants may show stunting, with lower leaves turning yellow before wilting develops. The vascular tissues of the roots and lower stem become brown. Infected roots may rot due to secondary bacterial infection. When an infected stem is cut and placed in a container of clear water, yellowish or greyish bacterial ooze emerges from the cut end. In severe cases, rapid and complete wilting may occur while the foliage is still green.