University of Arizona a dot Cooperative Extension

Herbicide Symptoms

by Pat Clay, Kai Umeda and Bill McCloskey

Dinitroaniline herbicides DNA’s

  • Soil-applied
  • Root and shoot absorbed
  • Not translocated
  • Grass weeds and some small-seeded broadleaf weeds

Prowl (pendimethalin) -

Control of grasses and small seeded broadleaf weeds

Photo of a field plot with morningglory, grasses, purslane with their control with  Prowl.
(Morningglory, grasses and purslane control at 2x use rate)

Chloroacetamide herbicides -

  • Soil-applied
  • Root and shoot absorbed
  • Translocated but not herbicidal
  • Grass weeds and some small-seeded broadleaf weeds

Dual Magnum (s-metalachlor)

Buggy whipping (on corn)

Photo of buggy whipping on corn

Cotton and Cantaloupe injury and morningglory control at 2x use rate

Photo of Cotton injury at 2x use ratePhoto of Cantaloupe injury at 2x use rate

Photo of morningglory control at 2x use rate

Other “amides” and miscellaneous category herbicides

  • pronamide (Kerb)
  • napropamide (Devrinol)
  • flufenacet (Axiom-w/metribuzin)
  • isoxaben (Gallery)
  • bensulide (Prefar)
  • DCPA (Dacthal)
  • dichlobenil (Casoran)
  • quinclorac (Facet)

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Full Disclaimers

Issued in furtherance of Cooperative Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, James A. Christenson, Director Cooperative Extension, College of Agriculture, The University of Arizona.

The University of Arizona is an equal opportunity, affirmative action institution. The University does not discriminate on the basis of race, color, religion, sex, national origin, age, disability, veteran status, or sexual orientation in its programs and activities.

Because labels are subject to frequent change, always consult the label attached to the product before using any pesticide. The user must assume responsibility for proper application and for residues on crops as well as for damage or injury caused by pesticides, whether to crop, person or property.

Any products, services, or organizations that are mentioned, shown, or indirectly implied in this web document do not imply endorsement by The University of Arizona.

Erin Taylor, Extension Agent, Field & Veg Crops
Kai Umeda, Area Extension Agent, Vegetable Crops
William B. McCloskey, Extension Weed Specialist
College of Agriculture, The University of Arizona, Tucson, AZ.
Material written September 2002.

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Copyright © 2001 University of Arizona,
College of Agriculture and Life Sciences