Image Number: 1402078

Descriptor:
Damage
Description:
Injury from phenoxy herbicides, such as 2,4-D, causes symptoms that depend on herbicide rate and age of tobacco. Young leaves are puckered and stiff, with very prominent midribs. The tips and margins of the leaves are often serrated. Higher dosages cause strappy leaves with parallel veins and twisted stems. On older plants, and the midrib also bends downward.
Image type:
Field

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Image location:
United States

Subject

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

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:
Tuesday, November 2, 2010