root knot nematode of watermelon

Root-knot nematode-Often the first evidence of this disease is the wilt and decline of the host plant. When the roots are sampled, the galls caused by the nematode are evident. Can be an important disease and is relatively widespread. Probably too often overlooked.

Figure 1. Root knot nematode Figure 1. Roots of watermelon with galls due to root knot nematode.
Figure 2. root knot nematode Figure 2. Galls of root knot nematode on watermelon roots.
Figure 3. Root nematode galls on a watermelon root system Figure 3. Root nematode galls on a watermelon root system that has been washed to reveal symptoms of root knot.
Figure 4. root knot nematode Figure 4. A watermelon seedling that has been recently transplanted in the field has root knot galls visible. Note that symptoms of decline of the plant foliage are visible.
Figure 5. Close up of watermelon roots of transplant with galls. Figure 5. Close up of watermelon roots of transplant with galls.
Figure 6. Severe root knot nematode galls on watermelon roots. Figure 6. Severe root knot nematode galls on watermelon roots.