Image Number: 1402085

Exposure to contact herbicides such as paraquat and dinoseb causes white lesions on leaves and stems. Other herbicides such as triazines, hexaxinone, acifluorfen, and bentazon may damage tobacco by root absorption, as well as by contact injury. The lesions turn brown and may fall out leaving holes in the leaf. Low levels of paraquat produce distinct individual lesions. With high levels, the lesions combine causing the leaves to yellow, and areas between the veins to die and fall out. If the plant does not die, later growth will be normal. Weather fleck and some types of chemicals may produce similar symptoms.
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Image location:
United States


Kingdom: Agrochemicals
Phylum: Herbicides
Class: Conventional Herbicides
Order: General herbicides
Family: General Herbicides
Subject: herbicides (general)


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