DuPont Authentication Velpar H - 64953 - Manual (Page 6)

NOTE: Severe alfalfa injury may result following
application after cutting if either the regrowth is more than 2
inches high, significant stubble is left after alfalfa cutting, or
the air temperature is above 90 °F.
DORMANT VARIETIES
Make a single application after alfalfa becomes dormant and
before new growth begins in the spring. Where weeds have
emerged, use a surfactant.
USE RATES
Use higher rates on hard-to-control species, (see Weeds
Controlled section below) fine textured soils, soils
containing greater than 5% organic matter, or under adverse
environmental conditions such as temperature extremes or
when weeds are stressed due to low rainfall.
For dormant alfalfa, use a surfactant approved for crops at
the rate of 0.25% v/v (1 quart per 100 gallons of spray
solution).
Select the appropriate rate for soil texture and organic
matter content as follows:
DuPont™ VELPAR® DF (Lb/Acre)*
Percent Organic Matter in Soil
Soils <1% 1–5% >5%
Coarse Texture
Loamy sand,
sandy loam 2/3 - 1 2/3 - 1 1 1/3 -2
Medium Texture
Loam, silt loam
silt, clay loam,
sandy clay loam
2/3 - 1 1 - 2 1 1/3 - 2
FineTexture
Silty clay loam,
sandy clay,
silty clay, clay
1 - 2 1 - 2 1 1/3 - 2
NOTE:
- In the states of MT, ND, SD, and WY, do not exceed a use rate of
1 1/3 pounds per acre on medium and fine textured soils.
- In the state of Montana (MT), do not apply to soils with less than
1.5% organic matter.
- In the state of Wyoming (WY):
Do not apply to soils with less than 0.5% organic matter.
Apply to irrigated alfalfa only.
WEEDS CONTROLLED
VELPAR® DF, when applied preemergence or early
postemergence at the following rates, is recommended for
the control or suppression of the following species in alfalfa
crops:
1/3 - 2/3 Lb/Acre
2/3 - 1 1/3 Lb/Acre
1 1/3 - 2 Lb/Acre
* Suppression - a visible reduction in plant population and/or
plant vigor as compared to an untreated area and generally not
accepted as control.
VELPAR® DF, when applied in late spring or after cutting
at the following rates, will control these species listed
below:
2/3 - 2 Lb/Acre
SPRAY EQUIPMENT
Apply VELPAR® DF using a fixed boom power sprayer or
aerial equipment.
For ground applications apply in a minimum of 20 gallons
of spray solution per acre and by air in a minimum of 5
gallons.
Crabgrass Digitaria spp
Fleabane Conyza spp
Foxtail Setaria spp.
Jimsonweed Datura stramonium
Lambsquarters, common Chenopodium album
Pigweed, redroot Amaranthus retroflexus
Alfalfa* (seedling) Medicago sativa
Barley, foxtail (seedling) Hordeum jubatum
Bluegrass, perennial* (spring only) Poa spp
Cockle, white*
Melandrium album
Dandelion, common* Taraxacum officinale
Dandelion, false* (spotted catsear) Hypochaeris radicata
Foxtail* Setaria spp
Kochia Kochia scoparia
Lambsquarters, common Chenopodium album
Lettuce, prickly* Lactuca serriola
Mallow, common Malva neglecta
Ryegrass, Italian (annual) Lolium multiflorum
Quackgrass* Elytrigia repens
Speedwell, ivyleaf Veronica hederaefolia
Tea, Mexican* Chenopodium
ambrosioides
Thistle, Canada (seedling) Cirsium arvense
Thistle, Russian Salsola iberica
Bluegrass, annual Poa annua
Brome, downy (cheatgrass) Bromus tectorum
Buckwheat, wild Polygonum convolvulus
Catchfly, English Silene gallica
Chamomile, mayweed (dogfennel) Anthemis cotula
Chickweed, common Stellaria media
Fiddleneck, tarweed Amsinckia lycopsoides
Filaree Erodium sp.
Flixweed Descurainia Sophia
Groundsel, common Senecio vulgaris
Henbit* Lamium amplexicaule
Lettuce, Miner’s Montia perfoliata
Mustard, blue Chorispora tenella
Mustard, Jim Hill (tumble) Sisymbrium altissimum
Mustard, wild Brassica kaber
Orchardgrass (seedling) Dactylis glomerata
Pigweed, redroot Amaranthus retroflexus
Radish, wild Raphanus raphanistrum
Rocket, London Sisymbrium irio
Rocket, common yellow Barbarea vulgaris
Salsify Tragopogon spp.
Shepherdspurse Capsella bursa-pastoris
Speedwell, purslane Veronica peregrina
Spurry, corn Spergula arvensis
Tansymustard Descurainia pinnata
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