Diseases of tomato (
Root-knot nematode
The Root-knot nematode, Meloidogyne incognita, is a serious problem on many different plants wherever soils have become infested. Plants may be come chlorotic and stunted if heavily infected and wilt easily when soil water decreases. Roots will have swellings or galls where female nematodes are established in the root (photo 1). The nematodes are active in warm weather so are not a problem in the winter. Root-knot can be controlled but not eliminated by rotating to a resistant plant or fallowing through the summer and by soil solarization using a clear plastic mulch in the summer months.
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February 24, 2003