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BRUSH SUPPRESSION
DuPont™ VELPAR® DF is recommended for the control or
suppression of the following species:
* Partial control
In addition to brush controlled, herbaceous species listed in
Weeds Controlled section of Release-Herbaceous Weed
Control may be controlled with these applications.
SPRAY EQUIPMENT
When applied as a liquid spray using water as the carrier,
VELPAR® DF may be applied by ground equipment or by
air (helicopter only).
MIXING INSTRUCTIONS
For ground application, use enough water for thorough
coverage, usually a minimum of 25 gal per acre. For aerial
applications, use at least 5 gal of water per acre.
RELEASE
- GRID & SINGLE STEM APPLICATIONS
VELPAR® DF is recommended for hardwood suppression in
conifer release sites.
GRID APPLICATION
Mix 2 2/3 pounds of VELPAR® DF with sufficient water to
make one gallon of suspension and thoroughly agitate.
Intermittent agitation may be required to maintain the
VELPAR® DF in suspension.
Apply the VELPAR® DF suspension directly to the soil surface
in a grid pattern using an exact delivery handgun applicator.
This equipment delivers a thin stream of predetermined volume.
VELPAR® DF should be applied during the period from
hardwood bud break to early summer.
Application rate and grid pattern will depend on soil texture and
woody plant composition. Use the lower rates on coarse
textured soils and when the major component of the hardwoods
are susceptible species. Use the high rates on fine-textured soils
and where weeds identified in the label as “partial control or
suppression” predominate.
Application Patterns and Rates For VELPAR® DF
Suspension
ML/Spot Grid (Ft) Qt/Acre
Coarse 0.5 3 X 4 3*
1.2 3 X 6 6
2.1 4 X 6 6
Medium/Fine 1.2 3 X 3 8
2.3 3 X 6 8
1.6 3 X 3 10
3.1 3 X 6 10
* Use on deep sands with pines four years or more of age.
SINGLE STEM (BASAL SOIL)
Mix 2 2/3 pounds of VELPAR® DF with sufficient water to
make one gallon of suspension and thoroughly agitate. Apply
the VELPAR® DF suspension with an exact-delivery handgun
applicator. This equipment delivers a thin stream of
predetermined volume when triggered. Apply the VELPAR®
DF suspension at the rate of 2 to 4 ml for each inch of stem
diameter at breast height. Direct the treatment to the soil within
3 feet of the root collar of woody plants to be controlled.
For multi-stemmed and low-growing brush that have stem
diameters that are difficult to determine, apply the VELPAR®
DF suspension at the rate of 2 to 4 ml per 3 feet of canopy
width. For tall, slender (columnar) brush types, apply 4 to 8 ml
per 3 feet of height. Base the rate on whichever canopy
dimension is greater (width or height).
When treating brush that requires more than a single delivery of
the VELPAR® DF suspension, apply subsequent deliveries
equally spaced around the target plant. If treating brush on
sloping sites, apply most of the suspension on the uphill side of
the stem. If treating resprouts from brush disturbed by cutting or
other mechanical methods, the rate of application should be
proportional to the original tree size, not just the size of sprout
regrowth.
USE PRECAUTIONS
- RELEASE GRID & SINGLE STEM
• Application of VELPAR® DF spots closer than 36 inches to
conifer seedlings in their first season or directly up slope from
these seedlings may result in injury or mortality.
• Use VELPAR® DF on seedlings in their first or fourth year
and older. Injury may result from use on two and three year
old seedlings where root growth is extensive but hardiness is
lacking.
RELEASE
- HERBACEOUS WEED CONTROL
VELPAR® DF is recommended for controlling herbaceous
weeds where the following species are grown:
EASTERN US
WESTERN US
APPLICATION TIMING
EASTERN US
Apply VELPAR® DF as a broadcast or banded spray in the
spring prior to conifer bud break to lessen conifer injury
potential.
Blue spruce
Douglas fir
Engleman spruce
Grand fir
Jeffrey pine
Lodgepole pine
Noble fir
Ponderosa pine
Sitka spruce
Western hemlock
White fir
Loblolly pine
Longleaf pine
Slash pine
Red pine
Ash
Aspen
Balsam poplar
Birch
Box elder
Brambles
Cherry (black, pin)
Deerbrush ceanothus
Dogwood*
Elm
Greenleaf manzanita
Hawthorne
Hazel
Honeysuckle
Oaks
Red maple*
Snowbush ceanothus
Sumac*
Sweetgum*
Whitehorn
Willow
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