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For multi-stemmed and low-growing brush that have stem
diameters that are difficult to determine, apply the
DuPont™ 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
- SITE PREPARATION
Where burning is desired, burn the vegetation only after any
residual brush has completely defoliated, at least twice,
allowing for sufficient root uptake of VELPAR® DF.
Following harvest, allow sufficient time for stumps and
injured trees to adequately resprout before applying
VELPAR® DF.
RELEASE
- HARDWOOD SUPPRESSION
VELPAR® DF is recommended for conifer release where
the following species are grown:
EASTERN US
WESTERN US
APPLICATION TIMING
EASTERN US
Apply VELPAR® DF from early spring to early summer
after hardwoods have broken bud and before full leaf
expansion.
Applications made over the top of pines may result in
excessive pine injury under conditions of high humidity and
temperature (80 degrees F).
WESTERN US
Rainbelt (areas of high spring rainfall): For best results,
apply in late winter or spring when brush is actively
growing, but prior to conifer budbreak. If application is
made after bud break, use directional spray equipment to
prevent contact with conifer foliage, as injury may result.
Snowbelt (areas of low spring rainfall): For best results,
apply in the fall before soil freezes and after the final resting
bud has hardened on the conifers. Or, spring applications
may be made after snow cover melts in anticipation of
rainfall prior to conifer budbreak. Brush control results
from spring treatments will be dependent on sufficient
rainfall following application to activate VELPAR® DF.
USE RATES
The rates listed below are for broadcast application. Do not
use more than one application of VELPAR® DF per year.
EASTERN US
VELPAR® DF
(Lb/Acre)
Crop Species Soil Description Established Trees
Loblolly pine Loamy sand,
Longleaf pine sandy loam 1 1/3 - 2
Shortleaf pine Loam, silt loam,
Virginia pine silt, sandy clay loam 1 1/3 - 2 2/3
Slash pine Silty clay loam,
clay loam, sandy clay,
silty clay, clay 3 - 4
Red pine Loamy sand, sandy loam 1 1/3 - 2 2/3
Loam, silt loam, silt,
sandy clay loam 2 2/3 - 4
Silty clay loam, clay loam,
sandy clay, silty clay, clay 4 - 5 1/3
Established Trees- 4 years of age from transplanting on
coarse-textured soils
- 3 years of age from transplanting on
medium-textured soils
- 2 years of age from transplanting for
Red Pine
WESTERN US
Application rates by soil type for VELPAR® DF in the
following western conifers: Blue spruce, Douglas fir, Engleman
spruce, Grand fir, Jeffrey pine, Lodgepole pine, Noble fir,
Ponderosa pine, Sitka spruce, Western hemlock and White fir.
VELPAR® DF
Soil Description (Lb/Acre)
Loamy sand,
sandy loam 1 1/3 - 3
Loam,
silt loam,
sandy clay loam 2 2/3 - 4
Silt, silty clay loam,
clay loam,
sandy clay, silty clay,
clay 3 - 4
For first year plantings utilizing bare root stock, treat only
transplant stock that is 2 years old (2-0, 1-1) or more, except
(1-0) for Ponderosa and Jeffrey pines. Apply VELPAR® DF
only if rainfall has settled the soil around the base and root
systems of the transplants.
Blue spruce
Douglas fir
Engleman spruce
Grand fir
Jeffrey pine
Lodgepole pine
Noble fir
Ponderosa pine
Sitka spruce
Western hemlock
White fir
Balsam fir
Black spruce
Loblolly pine
Longleaf pine
Norway spruce
Red pine
Red spruce
Shortleaf pine
Slash pine
Virginia pine
White spruce
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