Clemson University - USDA Cooperative Extension Slide Series , Bugwood.org
licensed under a Creative Commons Attribution 3.0 License.
licensed under a Creative Commons Attribution 3.0 License.
Image Number: 1436043
Descriptor:
Symptoms
Description:
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.
Image type:
Field
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Image location:
Subject
| Kingdom: Fungi |
| Phylum: Basidiomycota |
| Subphylum: Hymenomycotina |
| Class: Agaricomycetes |
| Subclass: Agaricomycetidae |
| Order: Ceratobasidiales |
| Family: Ceratobasidiaceae |
| Genus: Rhizoctonia |
| Subject: Rhizoctonia spp. DC. |
Host
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Solanales |
| Family: Solanaceae |
| Genus: Nicotiana |
| Subject: Nicotiana tabacum (flue-cured type) L. |
Node Affiliation:
Image uploaded:
Wednesday, July 24, 2002
Image last updated:
Thursday, May 12, 2011
