User manual

EASTERN US
D
uPont™ VELPAR® L (Pints/Acre)
Soil Texture First Year Established
D
escription Plantings Trees
Loamy sand, 4 4 – 5
s
andy loam(50-85% sand)
Loam, silt loam, silt, 4 – 5 5 – 7
sandy clay loam
Silty clay loam, 5 – 6 7 – 8
clay loam, sandy clay,
silty clay, clay
Red pine only - Refer to recommended rates in the
APPLICATION INFORMATION - Eastern US table
on page 13.
WESTERN US
Refer to recommended rates in the APPLICATION
INFORMATION - Western US table on page 13.
WEEDS CONTROLLED – RELEASE
VELPAR® L is recommended for the control or
suppression of the following species in forestry release sites:
* Suppression – a visible reduction in plant population and/or plant
vigor as compared to an untreated area and generally not accepted
as control.
FORESTRY—IMPREGNATION ON DRY
BULK FERTILIZER
VELPAR® L is recommended for impregnating or coating
dry bulk fertilizer to be applied on forested sites for the
establishment or r
elease of conifer plantations (except
longleaf pine) as specified on this label.
PLANTS CONTR
OLLED
Fertilizer impregnated with VELPAR® L is recommended
for the control and suppression of the weeds and brush
identified for the specific applications on this label. Consult
the appropriate segment of this label to determine the
appropriate rate of VELPAR® L to be applied per acre.
A
pply this amount of VELPAR® L to the volume of
fertilizer to be applied per acre.
IMPREGNATION EQUIPMENT
To impregnate or coat the fertilizer use a system consisting
o
f conveyor or closed drum used to blend dry bulk fertilizer.
IMPREGNATION INSTRUCTIONS
VELPAR® L may be used undiluted or mixed with a
sufficient quantity of water to ensure thorough coverage of
the fertilizer.
Direct the spray nozzles of the impregnation equipment to
deliver a fine spray of the mixture toward the fertilizer for
thorough coverage while avoiding contact with mixing
equipment. The use of a colorant or dye may be beneficial
to visually determine the uniformity of impregnation.
Uniform impregnation of dry bulk fertilizer may vary. If
absorption of the spray is not adequate, the use of an
absorptive powder or additive, such as “Microcel E” or
“HiSil 233”, may be required to produce a dry, free flowing
mixture.
Apply the fertilizer as soon as possible after impregnation
for optimum performance. Impregnated fertilizer may
become lumpy and difficult to apply following storage.
Diammonium phosphate, potassium chloride, 16-16-16 and
24-4-4 have been successfully impregnated.
APPLICATION EQUIPMENT
Applications of impregnated fertilizer may be made by
ground equipment or by air (helicopter or fixed wing).
Accurate calibration and patterning of the equipment is
essential for uniform distribution of the impregnated
fertilizer on the soil surface.
USE PRECAUTIONS
IMPREGNATED FERTILIZER FOR FORESTRY
• If fertilizer materials are excessively dusty, use a suitable
additive to reduce dust prior to impregnation. Application
of dusty fertilizer which has been impregnated may result
in off-targ
et drift and injury to desirable vegetation. Such
drift and associated injury may be aggravated by high
wind conditions.
• The dry fertilizer must be properly impregnated and
unif
or
ml
y applied to avoid pine injury/mortality and poor
w
eed and brush control.
• Uniform and precise application of the impregnated
fertilizer is essential for satisfactory weed and brush
control and to minimize pine injury. Overlaps or skips
between adjoining swaths or nonuniform distribution of
impregnated fertilizer within the swath will deliver poor
results and may result in pine injury or mortality.
• Do not impr
e
gnate potassium nitrate, sodium nitrate or
triple super phosphate fertilizers with VELPAR® L as
herbicidal action will be lost.
Asters Aster spp
Aster, heath* Aster ericoides
Barnyardgrass Echinochloa crus-galli
Bentgrass Agrostis spp
Bluegrass, annual Poa annua
Brackenfern Pteridium aquilinum
Bromegrass Bromus spp
Carrot, wild Daucus carota
Crabgrass* Digitaria spp
Daisy, oxeye Chrysanthemum leucanthemum
Dandelion, common* Taraxacum officinale
Dandelion, false*
(spotted catsear) Hypochaeris radicata
Dock, curly* Rumex crispus
Fescue* Festuca spp
Fireweed*(willowweed) Epilobium angustifolium
Fleabane Conyza spp
Foxtail Setaria spp
Goldenrod* Solidago spp
Groundsel, common Senecio vulgaris
Hor
se
w
eed/marestail
Con
yza canadensis
Or
c
hardgrass *
Dactylis glomer
a
ta
P
anicums
P
anicum spp
Pine
g
r
ass
Calama
g
r
ostis r
ubescens
Ra
gweed
,
common
Ambr
osia elatior
Ry
e
g
r
ass, Italian (ann
ual)
Lolium m
ultiflor
um
Ry
e
g
r
ass, per
ennial*
Lolium per
enne
Smar
tweed
,
P
ennsylv
ania
P
olyg
on
um pensylvanicum
Squa
wcarpet
Ceanothus pr
ostra
tus
V
elvetg
r
ass, common
Holcus lana
tus
17