Weed management

Group D

Lentils -trifluralin symptoms, stunted seedling. View full sized image
Lentils - Treflan® symptoms, damaged roots. View full sized image
Lentils — Trifluralin symptoms.Untreated plant (left)l shortened hypocotyl and roots (right). View full sized image
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lentils-ute-guide-hd-54-1.jpg

Lentils -trifluralin symptoms, stunted seedling.

Lentils -trifluralin symptoms, stunted seedling.

lentils-ute-guide-hd-55-1.jpg

Lentils - Treflan® symptoms, damaged roots.

Lentils - Treflan® symptoms, damaged roots.

lentils-ute-guide-hd-55-2.jpg

Lentils — Trifluralin symptoms, untreated plant (left), shortened hypocotyl and roots (right).

Lentils — Trifluralin symptoms, untreated plant (left), shortened hypocotyl and roots (right).

Inhibitors of Cell Division (by inhibiting tubulin formation)

Dinitro-anilines

Benzamides

Trade name

Chemical name

Trade name

Chemical name

Stomp®

pendimethalin

Kerb®

propyzamide

Trifluralin®/Treflan®

trifluralin

 

Yield®

trifluralin + oryzalin

Avoid sowing seed into the layer of herbicide treated soil. This often occurs from the seeder set-up resulting in variable depth of sowing, or from sowing too fast throwing herbicide treated soil onto adjacent furrows.

Symptoms are often worse when wet cold conditions slow germination and emergence.

Visual symptoms appear as the crop emerges with intermittent emergence along drill rows as a result of the shortening and thickening of the hypocotyl.

Lentils are the most sensitive pulse crop to Group D herbicides. Seeds germinate, but shoots are unable to emerge. Emerging leaves in affected plants are twisted and distorted.

Roots can be shortened and thickened.

M Materne, VDPI; I Koch, J & D Southwoods