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Safety - page 25 • First aid - page 33 • Resistance management - page 41
Herbicides
Leaching
:
The use of Vanquish chemical may result in contamination of groundwater, as it will leach in coarse
textured soils.
Toxicity
Slightly toxic by ingestion. Acute oral LD
50
(
rats) = > 3,512 mg/kg. Slightly toxic by contact.
Storage
Heated storage not required. Freezing may cause crystalization but no activity is lost if completely resuspended.
Varro
Group 2
Formulation
Product
Company
Active ingredient
Formulation
Container size
Varro (PCP#29070)
Bayer CropScience
Thiencarbazone-methyl: 10 g/L
Suspension
8.0
L jug
One 8 litre jug of Varro will treat 40 acres.
Crop, Timing and Rate
Crop
Timing
Rate
Spring and durum wheat
1 - 6
leaves on main stem plus 3 tillers but prior to the presence of the
first node (jointing).
0.2
L/acre
Winter wheat
Apply either in fall or spring when the majority of plants have one leaf
to full tillering but prior to the presence of the first node (jointing).
Weeds Controlled and Staging
For best results, apply to emerged, young, actively growing weeds according to the weed stages listed. Under stressed
conditions and/or heavy crop canopy, early application will result in improved weed control.
Grassy weeds: Apply at 1 to 6 leaves, up to emergence of the 3rd tiller
barnyard grass
volunteer canary seed (1 - 6 leaf,
up to emergence of 2nd tiller)
green foxtail
Japanese brome (suppression, 1 - 6 leaf)
Persian darnel (suppression)
yellow foxtail (suppression)
wild oats
Broadleaf weeds: Unless otherwise stated, apply at 1 - 6 leaf stage
cleavers (1 - 6 whorls)
hemp-nettle
lamb’s-quarters (suppression)
pale smartweed
redroot pigweed
shepherd’s-purse
stinkweed
volunteer canola
1
wild buckwheat
wild mustard
round-leaved mallow (suppression)
Russian thistle (suppression, up to 10 cm in height)
1
Excluding Group 2 resistant canola
Spring wheat only
For more consistent weed control including wild oats in areas of heavy infestation add Ammonium sulphate at 202 g/
acre (99% solution), .4 L/acre (49% solution) or .5 L/acre (40% solution).
Durum wheat
For more consistent weed control add a non-ionic surfactant (Agral 90, AgSurf or Surf 92) at 0.25% v/v.
Registered Tank Mixes
Tank mix partner
Varro plus tank mix partner rate
Crop stage/comments
In spring wheat (including durum)
2,4-
D ester
Varro: 0.2 L/acre + 2,4-D ester up to
142
g ai/acre
Wheat: 4 - 6 leaf stage plus 3 tillers but prior to
presence of first node (jointing)
Vanquish/VMD 480 (cont’d)