Clemson University - USDA Cooperative Extension Slide Series's Images
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Root and Butt / Root and Stem Diseases(X)
| 25 Images of 8 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1234034 | black rot | Guignardia bidwellii | |
| 1436147 | annosum root disease | Heterobasidion annosum | fruiting structure |
| 1436062 | crown gall | Rhizobium radiobacter | on roots |
| 1234062 | black rot | Guignardia bidwellii | |
| 1233227 | Pythium diseases | Pythium spp. | Rhizoctonia spp. injury (left and right) and Pythium spp. injury in center to young seedlings. Damping off is a problem in tobacco plant beds but can be a problem in the field soon after transplanting. Pythium spp. causes a watery, soft rot of the lower stem and root system and is more common during cool, wet weather. Rhizoctonia causes brown, irregular cankers to develop on the lower stems and injury is more common during warm weather. Lesions can enlarge and girdle the stem while plants that are not severely damaged by Rhizoctonia may recover in the field. |
| 1234144 | black rot | Botryosphaeria obtusa | |
| 1436146 | annosum root disease | Heterobasidion annosum | on trunk |
| 1436097 | black rot | Guignardia bidwellii | on stem |
| 1436086 | root diseases and rots | ||
| 1436165 | fairy rings | ||
| 1236183 | black rot | Botryosphaeria obtusa | |
| 1436069 | black rot | Botryosphaeria obtusa | |
| 1234216 | black rot | Guignardia bidwellii | |
| 1436095 | black rot | Guignardia bidwellii | on fruit |
| 1234220 | black rot | Guignardia bidwellii | |
| 1436021 | charcoal rot | Macrophomina phaseolina | |
| 1436163 | Pythium diseases | Pythium spp. | |
| 1436096 | black rot | Guignardia bidwellii | on leaf |
| 1233062 | fairy rings | ||
| 1234033 | black rot | Guignardia bidwellii | lesion |
| 1233063 | fairy rings | ||
| 1234061 | black rot | Guignardia bidwellii | |
| 1235234 | annosum root disease | Heterobasidion annosum | windthrow |
| 1436159 | Pythium diseases | Pythium spp. | to seedling plant caused primarily by species of the soil-borne fungi Pythium and Rhizoctonia |
| 1436072 | black rot | Botryosphaeria obtusa | black rot on mummy and frog-eye stage on leaf |
