Velpar DF

Manufacturer
Tessenderlo
Category
Herbicides
Registered until
2026-12-31
Registration number
25225
Active materials
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GENERAL INFORMATION


VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE is a water dispersible granule to be mixed in water and applied as a broadcast spray for selective control of certain weeds in blueberries, and in alfalfa grown for seed or forage. It is non-corrosive to equipment.
VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE provides pre-emergence and postemergence control of undesirable vegetation.
Applications to plants before leaves are fully expanded are more effective than later treatments.
Applications should not be made after target deciduous species have achieved full annualgrowth.
Foliar applications when vegetation is dormant or semi-dormant may not be effective in herbaceous plants.
VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE is absorbed through the roots and may demonstrate contact activity on foliage. There is, however, limited long-term effect on woody species following foliar application only. For brush control, soil applications are mosteffective.
Best results are obtained when VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE is present in the root zone during active growth of the target vegetation. Symptoms usually appear in herbaceous plants within 2 weeks after application under warm, humid conditions, while 4 to 6 weeks may be required when weather is cool. If rainfall after application is inadequate to activate VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE in the soil, plants may recover from contact effects and continue to grow until sufficient rainfall moves VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE into the root zone.
Symptoms usually appear within 3 weeks in actively growing woody plants after sufficient rainfall has carried the herbicide into the root zone. Defoliation and subsequent refoliation may occur until root reserves are exhausted at which time susceptible plants die. The degree of control and duration of effect will vary with amount of chemical applied, soil texture and organic matter, rainfall, temperature, weed or brush species, soil moisture, and other conditions.
Moisture is required to activate VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE in the soil.
The effectiveness of VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE may be reduced as the level of organic matter in the soil increases, therefore higher rates may be needed.

DIRECTIONS FOR USE


Calibrate equipment before spraying. Do not use excessive agitation after initial mixing as foaming may result. Avoid storing mixed solutions of VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE overnight where temperatures may fall below 7 degrees C. Do not apply more than 5.76 kg/ha per year. Do not apply to frozen or snow-covered soil. Avoid overlapping and shut off spray while starting, turning, slowing or stopping in order to avoid injury to desirable trees. Do not use mist blowers.

BLUEBERRIES
LOWBUSH BLUEBERRIES
(Ground Application Only, Do Not Apply by Air)
Apply VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE in the spring after pruning operations (burning or mowing), but before blueberries emerge. Use a minimum of 200 L of water per hectare. VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE controls most common grasses and many perennial broadleaved weeds, and such woody weeds as trailing blackberry, lamb-kill and hardhack. Canada blueberry (Vaccinium myrtilloides) and some clones of the lowbush blueberry (Vaccinium angustifolium) are sensitive. Temporary defoliation of the lower leaves of the lowbush blueberry will occur, but plants recover.
Apply VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE at the rate of 1.92-2.56 kg per hectare, depending on percent organic matter and soil type. Use lower rates on low organic matter soils.
Use higher rates on medium/heavy soils or on light soils containing greater than 5% organic matter. Do not apply VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE to gravelly or rocky soils or sand. DO NOT apply to any soils with less than 1% organic matter. Do not apply VELPAR DF CU
HERBICIDE WATER DISPERSIBLE GRANULE where the terrain does not permit even and accurate application. Avoid treating fields that may be subject to erosion following improved weed control, or areas of fields that are wet or poorly drained. Overlapping applications or those made after blueberries emerge may cause severe crop injury.

Applications to Established Forage Alfalfa
(Ground Application only, Do Not Apply by Air)
For control of dandelion, quack grass and sow thistle, apply 672 g/ha – 1.344 kg/ha in a minimum of 200 L water per hectare. Use the low rate on medium textured soils low in organic matter. For control of narrowleaved hawk’s-beard and scentless chamomile apply 1.344 kg/ha in a minimum of 200 L water per hectare.
Apply only to forage alfalfa that has been established for at least 18 months, in the late fall or early spring when the alfalfa is dormant. If fall irrigation and/or burning is to be carried out, do not apply VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE until after completion of these operations.
Do not apply within 30 days of harvest (cutting for hay), or feeding of forage or grazing.
Do not apply to frozen soil.
Crop injury may occur in fields where alfalfa root growth has been restricted by hard pans or other physical barriers to root growth.
Do not treat fields that are to be planted to other crops within 24 months. See REPLANTING TO OTHER CROPS section below.

REPLANTING TO OTHER CROPS:
Information enabling specific recommendations for rotational crops and recropping intervals is limited. Do not seed any crop following alfalfa that has been treated with VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE until a successful field bioassay shows that the crop in question may be grown safely. A successful field bioassay means growing to maturity a test strip of the crop across the field.
Persistence of VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE in the soil is influenced by temperature, rainfall, soil type and organic matter.
Seeding of field bioassays is not recommended less than 24 months after the last VELPAR DF CU HERBICIDE WATER DISPERSIBLE GRANULE application.
In some cases, tank mixing a pest control product with another pest control product or a fertilizer can result in biological effects that could include, but are not limited to: reduced pest efficacy or increased host crop injury. The user should contact Tessenderlo Kerly, Inc. at 1-800-525-2803 for information before mixing any pesticide or fertilizer that is not specifically recommended on this label. The user assumes the risk of losses that result from the use of tank mixes that do not appear on this label or that are not specifically recommended by Tessenderlo Kerly, Inc.

Registered for cultures
Alfalfa