Herbicides
81
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Safety - page 25 • First aid - page 33 • Resistance management - page 41
Application Tips
The activity of these products may be influenced by weather conditions. Optimum activity requires active crop
and weed growth. The temperature range for optimum activity is 8°C to 24°C. Reduced activity will occur when
temperatures are below 8°C or above 27°C. Frost before application (3 days) or shortly after (3 days) may reduce
weed control and crop tolerance. Weed control may be reduced during stress conditions, e.g. drought, heat or cold
stress, or if weeds have initiated flowering, or if heavy infestations exist. Application before the 4-leaf stage of wheat
and barley may cause severe twisting of leaves and leaf, stem and head deformities, which may reduce, yield up to
10%.
Do not apply later than the flag-leaf stage. Some twisting may be evident on barley. This twisting is transitory
and may disappear within 3 weeks.
How it Works
Attain XC and Flurox 24 herbicides are non residual. The components of these products move within the plant to
control exposed and underground plant tissue. It mimics naturally occurring plant hormones and controls weeds by
disrupting normal plant growth patterns. Symptoms include twisting of stems and swollen nodes.
Expected Results
Broadleaf weeds
:
Weeds start to twist shortly after spraying. After twisting and bending, plants stop growing, turn
brown and die.
Restrictions
Rainfall
:
Do not apply if rain is expected in 1 hour.
Grazing
:
Do not permit lactating dairy animals to graze fields within 7 days after application. Do not harvest forage
or cut for hay within 30 days after application. Withdraw meat animals from treated fields at least 3 days prior to
slaughter.
Pre-harvest Intervals
:
Do not harvest the treated mature crop within 60 days after application.
Re-cropping
:
Fields treated with these products can be seeded the following year to barley, canola, flax, forage
grasses, lentils, mustard, oats, peas, rye, wheat or summerfallowed. Do not seed crops other than those listed above
for at least one year following treatment.
Environmental Precautions
Overspray or drift to important wildlife habitats, such as ponds, wetlands, streams, woodlots and shelterbelts, should
be avoided. A 15-metre buffer zone should be established between areas to be sprayed and aquatic environments or
terrestrial habitats listed above.
Runoff:
Under certain conditions, these products have the potential to runoff from treated areas. 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, fine textured, or low in organic matter such as
clay). Avoid application of this product when heavy rain is forecast. Contamination of aquatic areas as a result of
runoff may be reduced by including a vegetative strip (buffer zone) between the treated area and the edge of the
water body.
Toxicity
2,4-
D has moderate acute mammalian toxicity. Acute oral LD
50
= technical 639 - 764 mg/kg. Fluroxypyr has very
low mammalian toxicology. Acute oral LD
50
>2,000 mg/kg.
Storage
Store in a dry, heated area. If product is frozen, bring to room temperature and agitate before use.
Attain XC/Flurox-24 (cont’d)