Image Number: 1440077

Descriptor:
Damage
Description:
Preplant incorporated herbicides, such as dinitroanalines, may cause injury to tobacco when they are improperly applied or not uniformly incorporated. Typical injury symptoms include seriously pruned root systems which result in stunted root growth and irregular field appearance. Affected plants exhibit a deficiency of feeder roots in the zone of herbicide incorporation. Most secondary and feeder roots terminate in blunt knob-like tips. Injury is also more common when cool wet weather persists after transplanting, or when excessively high rates of herbicides are used.
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 (burley type) L.
Node Affiliation:
Image uploaded:
Monday, January 1, 1990
Image last updated:
Monday, May 16, 2011