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Herbicides
47
• Safety - page 25 • First aid - page 33 • Resistance management - page 41
2,4-D
Group 4
Formulation
Product
Company
Active ingredient
Formulation
Container size
2,4-D 600 amine (PCP# 17511)
IPCO
560 g/L
Solution
2 x 10 L
2,4-D 600 amine (PCP# 14726)
Nufarm Agriculture 560 g/L
Solution
2 x 10 L
2,4-D 600 amine (PCP# 5931)
UAP Canada
560 g/L
Solution
2 x 10 L
2,4-D 600 amine (PCP# 29248)
Viterra
560 g/L
Solution
2 x 10 L
2,4-D 700 ester (PCP# 27819)
IPCO
660 g/L
EC
2 x10 L, 115 L, 205 L
2,4-D 700 ester (PCP# 27820)
Nufarm Agriculture 660 g/L
EC
2 x 10 L
2,4-D 600 ester (PCP# 27818) Salvo
United Agri-Products 660 g/L
EC
2 x 10 L
2,4-D 700 ester (PCP# 29006)
Viterra
660 g/L
EC
2 x 10 L, 115 L
Crops, Staging and Rates
Crop
Stage
Rate
Wheat, barley, rye (not under-seeded
with legumes)
From the 4 - leaf expanded to the early
flag-leaf (shot blade) stage.
600 g/L formulation: up 0.24 - 0.38 L/acre
700 g/L formulation: up to 0.323 L/acre
Winter wheat, fall rye
Spring:
full tillering to the shot blade stage.
Fall:
do not apply to seedling in the fall.
600 g/L formulation: up to 0.24 - 0.38 L/acre
700 g/L formulation: up to 0.33 L/acre
Field corn
As an overall spray, before the corn is
15 cm tall (leaf extended) and/or before the
6-leaf stage. For later applications (corn
15-75 cm, leaf extended), use a shielded
spray or a directed spray with drop pipes.
Keep spray off corn foliage.
600 g/L formulation: up to 0.19 - 0.37
700 g/L formulation: up to 0.33 L/acre
Established grasses grown for forage
and seed production
Spring:
up to the shot blade stage of
the grass.
Fall:
after harvest.
600 g/L formulation: up to 0.38 L/acre
700 g/L formulation: up to 0.33 L/acre
Established pasture and rangeland
(without legumes)
600 g/L formulation: up to 1.62 L/acre
700 g/L formulation: up to 1.38 L/acre
Stubble land, roadsides, summerfallow
Apply at a time of rapid growth, usually
May, June and/or September.
600 g/L formulation: up to 1.11 L/acre
700 g/L formulation: up to 0.95 L/acre
Golf courses (roughs and fairways only),
sod farms
Apply at a time of rapid growth, usually
May, June and/or September, before
grasses are in the flag-leaf (shot blade)
stage.
600 g/L formulation: up to 1.1 L/acre
700 g/L formulation: up to 0.77 L/acre
(1.53 L per year)
Weeds and brush control (non-crop land)
Apply at time of rapid growth (usually May,
June and/or September).
600 g/L formulation: 1.11 - 3.20 L/acre
700 g/L formulation: 1.31 - 2.75 L/acre
Basal bark and stump treatment
700 g/L formulation: 2.5 Litres in 100 L of
diesel fuel. Spray to run-off.
Weeds, Rates and Staging
Apply at lower rates when weeds are small (2- to 4-leaf), growing rapidly, under good growing conditions. Higher
rates are needed when weeds are larger, growing under stress conditions (dry or cold weather) or in heavy infestation.