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Introduction

87089-2017%20Guide%20to%20Crop%20Protection_complete

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84<br />

Harder to control weeds:<br />

227 to 340 g ae per acre<br />

º Annual sow-thistle<br />

º Blue lettuce*<br />

º Burdock (top growth<br />

only of bolting plants)<br />

º Canada thistle***<br />

º Common chickweed<br />

º Common groundsel**<br />

º Common peppergrass<br />

º Dandelion*<br />

º Flixweed (spring prior<br />

to bolting)<br />

º Knotweed<br />

º Lady’s-thumb<br />

º Leafy spurge*<br />

º Mustard (dog & tansy)<br />

º Narrow-leaved hawk’sbeard<br />

(spring prior to<br />

bolting)<br />

º Oak-leaved goosefoot<br />

º Pineappleweed<br />

º Prostrate pigweed<br />

º Purslane<br />

º Redroot pigweed<br />

º Russian thistle<br />

º Sheep sorrel<br />

º Tumble pigweed<br />

Top Growth Control only (at rates for harder to control weeds):<br />

º Biennial wormwood<br />

º Bull thistle<br />

º Buttercup<br />

º Curled dock<br />

º Field bindweed<br />

º Gumweed<br />

º Hedge bindweed<br />

º Hoary cress<br />

º Horsetail<br />

º Mouse-eared<br />

chickweed<br />

º Perennial sow-thistle<br />

º Russian knapweed<br />

º Tartary buckwheat<br />

º Volunteer sunflower<br />

* Control of seedlings at rates given above and top growth control only of established plants.<br />

** Spring seedlings. Winter annual weeds - apply in late fall or early spring prior to bolting.<br />

*** Suppression only - Apply when Canada thistle plants are actively growing and have 6 to 8 inches (15 to 20 cm) of<br />

new growth. Regrowth will be present the following spring and in-crop treatments will be required.<br />

Formulation Characteristics:<br />

Formulation Risk of Vapour Drift Activity on Weeds Risk of Crop Injury<br />

LV Ester Medium Fast Medium<br />

Amine Very Low Medium Low<br />

Application Information:<br />

• Water Volume: Minimum 20 L per acre - ground application. Water rates depend on product and use. Consult label for<br />

details. Higher application volumes (40 L/acre or greater) reduce the risk of crop injury.<br />

• Nozzles and Pressure: 40 psi (275 kPa) when using conventional flat fan nozzles. Low drift nozzles may require higher<br />

pressures for proper performance. Use nozzles and pressures designed to deliver proper coverage with ASABE coarse<br />

droplets.<br />

How it Works:<br />

Refer to Table 9 on page 48.<br />

Effects of Growing Conditions:<br />

Best weed control occurs when temperatures are above 21 o C (daytime) or 10 o C (nighttime) and humidity is above<br />

70 percent. DO NOT apply if temperature exceeds 27 o C.<br />

Tank Mixes:<br />

None listed on 2,4-D label.

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