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Rapid, broad-spectrum control of tough weeds in glyphosate-tolerant corn, to keep it clean and protect yield potential.

  • Fast-acting, post-emergent control of broadleaf weeds and grasses
  • Residual activity that lasts right up to canopy closure
  • Wide application window from pre-emergence to the 8-leaf stage in glyphosate-tolerant corn
  • Combining Group 27 and Group 15 chemistries, Armezon PRO offers multiple modes of action and is tank mixed with atrazine or atrazine and glyphosate
  • Armezon PRO can also be applied in tank mix with Marksman® herbicide and Roundup WeatherMAX® with Transorb® 2 Technology Liquid Herbicide1

1 Apply to glyphosate-tolerant corn from pre-emergence up to 5-leaf stage.

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Weed Management

Weed Class List of Weeds
Broadleafs - 1 to 8 leaf Common chickweed6
Common lamb’s quarters
Common ragweed
Eastern black nightshade
Green pigweed
Lady’s thumb
Redroot pigweed
Velvetleaf6
Wild mustard
Grasses - 1 to 4 leaf (except where indicated) Barnyard grass
Crabgrass (large)
Fall panicum - (up to 2 leaf)
Foxtail (green, yellow)
Old witchgrass
Weeds controlled when Armezon PRO is applied in a tank-mix with atrazine.

6 Suppression only.

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How it Works

Armezon PRO provides fast-acting control of broadleaf weeds and grasses, with residual activity that lasts right up to canopy closure. With Group 27 and Group 15 chemistries, it offers multiple modes of action for tank mixing with atrazine2(for conventional corn) or glyphosate plus atrazine2 (for GT corn). Flexible staging is included with a wide application window between the spike and 8-leaf stage in GT corn.


2Marksman herbicide as a source of atrazine is an optional tank-mix partner*, providing an additional mode of action for enhanced control of glyphosate-resistant weeds. For a tank-mix of Armezon PRO plus Marksman herbicide plus Roundup WeatherMax with Transorb 2 Technology Liquid Herbicide, see “When to apply and “How much to apply” for further details.


Application Tips

Prior to application, store Armezon PRO in a cool, dry place and protect from freezing.

For best performance spray weeds before they have reached the maximum leaf stage recommended on the label.

Temperature and moisture conditions for active plant growth are important for best results.

Rainfastness – Limited by glyphosate formulation.

Mixing order

  1. Fill clean spray tank half full with clean water and start agitation.
  2. If using dry tank mix partner, add correct amount to the tank and agitate.
  3. If using liquid or solution herbicide tank mix partner add correct amount.
  4. Add the correct amount of Armezon PRO while continuing agitation.
  5. Glyphosate: If adding a glyphosate formulation with full load of surfactant, add the correct amount to the tank after the addition of Armezon PRO. If adding a glyphosate formulation with low load of surfactant, add the correct amount prior to adding Armezon PRO into tank.
  6. Add either Merge adjuvant to the spray tank or Assist followed by liquid fertilizer (UAN 28%), with the exception of glyphosate tank-mixes.
  7. While agitating, fill the remainder of the tank with water up to the proper level.

Pre-harvest interval

80 days after application.

45 days after application for grazing or feeding treated corn forage, silage, fodder or grain to livestock.

When to Apply

CropsTank mixCrop staging
Field corn with atrazine (plus surfactant) pre-emergence to 3 leaf
Field corn, glyphosate-tolerant with atrazine with glyphosate pre-emergence to 8 leaf3

Refer to the glyphosate label for additional flexibility in weed stages at the time of application.

3For a tank-mix of Armezon PRO plus Marksman plus Roundup WeatherMax with Transorb 2 Technology Liquid Herbicide, apply from emergence up to 5-leaf stage.

How Much to Apply

Corn Type Mixes Rates
Glyphosate-Tolerant Corn Armezon PRO herbicide
+ Aatrex 4804
+ glyphosate4, 5
405 ml/ac (1 L/ha)
+ 421 ml/ac (500 g ai/ha)
+ 364 g ae/ac (900 g ae/ha)
Armezon PRO herbicide
+ Marksman herbicide4
+ Roundup WeatherMax with Transorb 2 Technology Liquid Herbicide 4
405 ml/ac (1 L/ha)
+ 1.0 L/ac (2.5 L/ha)
+ 0.67 L/ac (1.67 L/ha)
Conventional Field Corn Armezon PRO herbicide
+ Aatrex 4804
+ Merge®4
405 ml/ac (1 L/ha)
+ 421 ml/ac (500 g ai/ha)
+ 0.25% v/v
Armezon PRO herbicide
+ Aatrex 4804
+ Assist®4
+ UAN5
405 ml/ac (1 L/ha)
+ 421 ml/ac (500 g ai/ha)
+ 1.25% v/v (12.5 L/1000 L water)
+ 1.25% v/v (12.5 L/1000 L water)

Water Volume

Ground application only 40 L/ac (10 gal/ac, 100 L/ha)

4Atrazine, glyphosate, Marksman herbicide, Roundup WeatherMax with Transorb 2 Technology Liquid Herbicide, Merge, Assist, and 28% UAN are all sold separately.

5Only use glyphosate products present as isopropylamine salt or potassium salt. Read glyphosate label to confirm application rates.

Mixing Instructions

  1. Fill clean spray tank half full with clean water and start agitation.
  2. If using dry tank mix partner, add correct amount to the tank and agitate.
  3. If using liquid or solution herbicide tank mix partner add correct amount.
  4. Add the correct amount of Armezon PRO while continuing agitation.
  5. Glyphosate: If adding a glyphosate formulation with full load of surfactant, add the correct amount to the tank after the addition of Armezon PRO. If adding a glyphosate formulation with low load of surfactant, add the correct amount prior to adding Armezon PRO into tank.
  6. Add either Merge adjuvant to the spray tank or Assist followed by liquid fertilizer (UAN 28%), with the exception of glyphosate tank-mixes.
  7. While agitating, fill the remainder of the tank with water up to the proper level.

Follow Crops

4 months after application

  • Winter wheat

Following spring after application

  • Alfalfa
  • Field corn
  • Navy beans
  • Peas
  • Soybeans
  • Spring wheat

Refer to tank-mix partner’s product label for additional follow-crop restrictions.

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Product Specifications

Product Name: Armezon Pro
Product Article number: 59014375
Size (units x size): 2 x 8.1 L
PCP#: 32148
Ontario Classification: 3
Gross weight of package: 19.5 kg
Units/pallet: 36 cs / 72 jugs
PTS - T/L (48 foot): 24
Warehouse Stack Height: 3
Heated Storage: No
Flash Point: 98.9 C
NFC Class: N/R
TDG Information: Not Regulated

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