Herbicides
291
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Safety - page 25 • First aid - page 33 • Resistance management - page 41
Trifluralin
Group 3
Formulation
Product
Company
Active ingredient Formulation Container size
Bonanza 10G (PCP# 22744)
Loveland Products Canada 10%
Granules
22
kg bag, 500 kg bulk bag
Bonanza 480 EC (PCP# 28289)
Loveland Products Canada 480/L
EC
9.45
L, 205 L
Rival 10 G (PCP# 18926)
NuFarm Agriculture
10%
Granules
22
kg bag, 454 kg bulk bag
Rival EC (PCP# 18612)
NuFarm Agriculture
500
g/L
EC
9
L, 110 L
Treflan EC (PCP# 23933)
Dow AgroSciences
480/
L
EC
9.45
L, 115 L
Oilseed and Special Crops
Crops and Staging
Not all the trifluralin formulations are registered for the crops listed below. Please refer to the specific product label
for details. Granules applied in the fall only (after Sept. 1 but before soil freeze-up). All products are for pre-plant-
incorporated use only.
alfalfa establishment (flax and
canola cover crops only)
asparagus (established -
3
years)
barley (fall only for
granular products)
black beans
canola (8.9)
dry common beans (kidney,
white)
faba beans
flax (summer and fall only)
forage legumes (seedling
alsike clover, red clover, cicer
milkvetch, bird’s-foot trefoil)
lentils (fall only)
peas (field, canning)
safflower
saskatoon berries
soybeans
strawberries
sunflower (8.9)
sweet clover
transplanted shelterbelts
vegetables (broccoli,
brussel sprouts, cabbage,
cauliflower, carrots,
rutabaga, transplanted
tomatoes)
Weeds Controlled
annual bluegrass
barnyard grass
carpetweed
cheatgrass (downy bromegrass)
chickweed
cow cockle
crabgrass
goosegrass
knotweed
lamb’s-quarters
millet (green and yellow
foxtail)*
meadow bromegrass
Persian darnel
pigweed
purslane
Russian thistle
stink grass
wild oats**
wild buckwheat
*
Excluding Group 3 resistant foxtails.
**
Suppression
Spring Application
:
Trifluralin can be applied immediately prior to planting or up to three weeks before planting.
Summer Application
:
Trifluralin can be applied to summerfallow between June 1 and September 1 for weed
control in canola or flax the following year. Apply the summer rate and incorporate (see Incorporation section). Not
recommended for sand and sandy loam soils. Trifluralin must be incorporated at least twice with the implement
operated in two different directions. The initial incorporation must be done within 24 hours after application. The
second incorporation (and subsequent incorporations) may be done whenever necessary to destroy resistant weed
growth during the remainder of the fallow season. Shallow tillage (5 to 8 cm) is necessary in the spring prior to
planting.
Summerfallow
:
Bonanza 10 G and Rival 10 G can also be applied to summerfallow in May, June or July for weed
control during both years of a fallow-wheat rotation or in the fall (September - prior to soil freeze-up) prior to spring
and durum wheat seeding.
Crop Year
wild millet (green foxtail and
yellow)*
lamb’s-quarters
wild buckwheat
wild oats
Summerfallow year (above weeds as well as)
barnyard grass
cow cockle
Persian darnel
red root pigweed
Russian thistle