This page was updated on Monday March 17 2008

Herbicide Injury Symptoms

Herbicide injury home page	Growth regulators	Photosynthesis inhibitors	Pigment inhibitors
Lipid biosynthesis inhibitors	Amino acid synthesis inhibitors	Inhibitors of cell division	Inhibitors of shoot growth
Inhibitors of shoot & root	oils, acids & salts	Bipyridylium herbicides	Diphenylether herbicides

Cell Membrane Disrupters:
Diphenylether Herbicides

Common Herbicides in the Group:

acidfluorfen (Blazer, Tackle)
oxyfluorfen (Goal)
lactofen (Cobra)

How Applied:

Soil and foliar applied with limited movement in the soil.

Movement in the Plant:

These herbicides enter the plant through leaf, stem, and root tissue but move little once absorbed.

Mode of Action:

Oxyfluorfen, lactofen and acidfluorten cause membrane disruption through lipid peroxidation.

Common Symptoms:

These herbicides cause necrosis of leaves and stems.

Effects of Diphenylether Herbicides

Necrosis of Leaf and Stem

The terminal growth of this privet was sprayed with oxyfluorfen causing necrosis of the tip and leaves.

Stem and Leaf Necrosis

This onion plant was sprayed with oxyfluorfen. The sides which were sprayed are necrotic, but the unsprayed sides of the leaves continued to grow causing curling of the leaves.

General Necrosis

The bean plant on the left was lightly sprayed with oxyflourfen two days earlier. Note the rapid onset of necrosis.