Introduction

246
Gramoxone
Herbicide Group
22 – paraquat
(Refer to page 44)
Company:
Syngenta Canada (PCP#8661)
Formulation:
200 g/L paraquat formulated as a solution.
• Container size - 4 x 5 L
Crops and Staging:
Stale seedbed: Non-selective weed control applied 3 days prior to crop emergence in beans, corn, potatoes, peas,
soybeans.
Non-selective inter-row weed control: Apply as a directed spray between rows in row crops. Avoid contact with crop
foliage.
Control of weed seedlings in established alfalfa and bird’s-foot trefoil for hay: Apply 5 days after first cut.
Control of weed seedlings in bird’s-foot trefoil for seed: Apply in spring when bird’s-foot trefoil shoots are 3 to 6 inches
(7.5 to 15 cm) long.
Non-selective weed control – shelterbelts: Apply as a directed spray in and around shelterbelt trees or woodlot plantings.
Avoid contact with foliage.
Pre- or Post- seeding burndown: Apply prior to crop emergence in barley, canary seed, canola, corn (field, sweet and
pop), dry beans, field peas, flax, solin (low linolenic acid flax), lentils, mustard, oats, potato, rye, soybean, sunflower, triticale,
wheat.
Weeds and Staging:
Annual weed burn-off. Best control when weeds are less than 2 inches (5 cm) in height or diameter.
Rates:
Pre- or post-seeding burndown: 0.8 to 1.6 L per acre
All other applications: If weeds are less than 2 inches (5 cm) in height, apply 1.1 L per acre (5 L treats 4.5 acres). If weeds are
taller than 2 inches (5 cm), increase the rate of Gramoxone to 2.2 L per acre (5 L treats 2.2 acres).
Application Information:
• Water Volumes:
º Pre or post seeding burndown: Minimum 40 liters per acre.
º All other applications: 135 to 500 L per acre. Use the higher water volumes within the range if weed growth is
dense. Good coverage is critical for good control.
• Nozzles and Pressure: 30 to 40 psi (200 to 275 kPa) when using conventional flat fan nozzles. Low drift nozzles may
require higher pressures for proper performance. Use a combination of nozzles and pressure designed to deliver
thorough, even coverage of ASABE medium droplets.
• Restrictions: Gramoxone is only to be used by individuals with a valid provincial pesticide applicator license.
How it Works:
Refer to Table 9 on page 48.