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Safety - page 25 • First aid - page 33 • Resistance management - page 41
Herbicides
Weeds, Rates and Staging
Weed
Soil type
Rate
Common ragweed, dandelion, eastern black nightshade,
green foxtail, green pigweed, hairy nightshade,
lamb’s-quarters, redroot pigweed
Coarse-textured, with <5% organic matter
113
g/acre
Medium-textured, with > 5% organic matter
170
g/acre
Registered Tank Mixes
Glyphosate product, present as isopropyl amine or potassium salt at 1.2 kg a.i./ha.
Application Information
With
:
Apply with ground equipment. Do not apply by air.
Water Volume
:
Apply in sufficient water for uniform coverage.
Application Tips
Do not apply to farm alleys or roads where traffic may result in treated dust settling onto crops or other desirable
vegetation. Do not apply to soils that are susceptible to wind erosion. Do not make more than two applications per
growing season.
How it Works
Payload controls weeds by inhibiting protoporphyrinogen oxidase, an essential enzyme required by plants for
chlorophyll biosynthesis. Seedling weeds are controlled preemergence when exposed to sunlight following contact
with the soil-applied herbicide. Payload offers residual control of susceptible grass and broadleaf weeds listed on
the label and assists in the control of acetolactate synthase (ALS) resistant weeds. The length of residual control is
dependent on the application rate as well as on rainfall and temperature conditions. Length of residual control will
decrease as temperature and precipitation increase and on soils of high organic matter and/or high clay content.
Expected Results
Moisture is necessary to activate Payload in soil for residual weed control. Dry weather following applications of
Payload may reduce effectiveness. However, when adequate moisture is received after dry conditions, Payload will
control susceptible germinating weeds. Payload may not control weeds that grminate after application but before an
activating rainfall/irrigation or weeds that germinate through cracks resulting from dry soil.
Restrictions
Rainfall
:
Moisture is necessary to activate Payload in soil for residual weed control.
Grazing
:
Do not graze treated fields or feed treated forage or hay to livestock.
Environmental Precautions
Payload herbicide is toxic to aquatic organisms and non-target terrestrial plants. Observe buffer zones specified on
the label. Payload is also toxic to small wild mammals and certain beneficial insects. Minimize spray drift to reduce
harmful effects on beneficial insects in habitats next to the application site such as hedgerows and woodland.
Runoff
:
Avoid contamination of aquatic areas through runoff.
Toxicity
Low acute mammalian toxicity. Acute oral LD
50
(
rats) = > 5,000 mg/kg.
Storage
Keep pesticide in original container. Store in a cool, dry, secure place. To prevent contamination, store this product
away from food or feed.
Payload (cont’d)