Image Number: 1402059

Descriptor:
Damage
Description:
Frenching is caused by a toxin produced by a nonpathogenic soil bacterium (Bacillus cereus). Yellowing begins along the edge of young leaves and may eventually include all the area between the veins which remain green. Plants are stunted and develop a large number of long, narrow leaves and suckers. Frenching normally occurs in small areas of the field, especially in poorly drained, high pH soils during cool, wet weather.
Image type:
Field

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Image location:
United States

Subject

Kingdom: Other damage agents
Phylum: Other damage agents
Class: Other damage agents
Order: Abiotic
Family: Other abiotic damage
Subject: frenching

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:
Sunday, March 10, 2002
Image last updated:
Friday, December 10, 2010