Herbicides
149
• 
Safety - page 25 • First aid - page 33 • Resistance management - page 41
Restrictions
Re-cropping
:
Fields treated with Express Pro may be seeded to wheat (spring, durum or winter) or spring barley a
minimum of 24 hours after application. The following crops may be seeded 10 months after application: Canola, flax
and peas.
Environmental Precautions
Buffer zone guideline
:
Toxic to aquatic organisms and non-target terrestrial plants. Use a buffer zone of 4 metres for
terrestrial habitats and 1 metre minimum for aquatic habitats.
Leaching
:
The use of this chemical may result in contamination of groundwater, particularly in areas where soils are
permeable (e.g. sandy soil) and/or the depth to the water table is shallow.
Runoff
:
To reduce runoff from treated areas into aquatic habitats, consider the characteristics and conditions of the
site before treatment. Site characteristics and conditions that may lead to runoff include, but are not limited to: heavy
rainfall, moderate to steep slope, bare soil, poorly draining soil (e.g. soils that are compacted or fine textured such as
clay).
Toxicity
Tribenuron methyl: Very low acute mammalian toxicity. Acute oral LD
50
(
rats) = >5,000 mg/kg. Metsulfuron methyl :
Low acute mammalian toxicity. Acute oral LD
50
(
rats) = > 5,000 mg/kg.
Storage
Store product in original container only, away from other pesticides, fertilizer, food or feed. Not for use or storage in
or around the home. Keep container closed.
Express SG
Group 2
Formulation
Product
Company
Active ingredient
Formulation
Container size
Express SG (PCP# 28262)
E. I. duPont Canada
Tribenuron-methyl: 50% Soluble granules
486
g bottle
Note: Express SG is purchased alone but must be tank mixed with either 2, 4-D or glyphosate before use.
Crops and Staging
Crop
Staging
Comments
Barley, spring wheat (including durum), winter wheat, oats,
canary seed, pulses (including dry beans
*
,
fababeans
*
,
lupins
*
,
field peas
*
,
soybeans
*
)
ExpressSun® sunflowers
1
day prior to
seeding
Must be tank mixed with glyphosate.
Pasture and rangeland
Early bud to
prebloom for weeds
Use a minimum of 22.5 L/acre of water.
Alfalfa, red clover and alsike clover (grown for seed or forage)
Preseed 24 hours
prior to seeding.
Must be tank mixed with glyphosate
with a minimum of 22.5 L spray solution/
acre. Injury to crop may occur on coarse
textured soil or low organic matter
matter(<3%) soils.
Summerfallow
Must be tank mixed with 2,4-D or
glyphosate..
*
Express SG should not be used prior to registered pulse or forage crops on soils with greater than 50% sand or less than 3% organic matter.
Express Pro (cont’d)