Armezon

Manufacturer
BASF
Category
Herbicides
Registered until
2025-12-31
Registration number
30131
Active materials
Links

FOR SALE FOR USE ON FIELD CORN (including both conventional and herbicide tolerant varieties), SWEET CORN AND SEED CORN


GENERAL INFORMATION
ARMEZON herbicide is a systemic post-emergence herbicide for selective control of grasses and broadleaf weeds in field corn (conventional and herbicide tolerant hybrids), sweet corn and seed corn (hybrids and inbred lines).
ARMEZON herbicide is absorbed by leaves, roots, and shoots and translocated to the growing points of sensitive weeds to provide post-emergence control of emerged weeds. ARMEZON herbicide controls weeds by inhibiting carotenoid biosynthesis (HPPD inhibitor). Temperatures and moisture conditions for active plant growth are important for optimum ARMEZON herbicide activity.


DIRECTIONS FOR USE
FIELD CORN, SWEET CORN AND SEED CORN (Hybrids and Inbred Lines)
ARMEZON herbicide is effective in post-emergence control of annual weeds in conservation tillage as well as in conventional production systems. Apply ARMEZON herbicide as a post-emergence treatment to corn when weeds are actively growing. For optimal weed control, apply ARMEZON herbicide before the weeds exceed labeled leaf stages.
ARMEZON herbicide can be applied post-emergence on field corn, including imazethapyr tolerant corn (i.e., Clearfield), glyphosate tolerant corn (i.e. Roundup Ready) and glufosinate ammonium tolerant corn (i.e. LibertyLink hybrids), sweet corn and seed corn (hybrids and inbred lines).
ARMEZON herbicide should be applied during favourable growing conditions for optimum crop tolerance and weed control. Crops under environmental stress are more likely to show injury from any herbicide application. Rarely, plants under these conditions treated with ARMEZON herbicide may show some transient bleaching of the portion of the leaves intercepting the spray application. These symptoms are transient and occur infrequently. Growth is not affected and normal plant appearance is seen within 1 to 2 weeks.

Field sprayer application
DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty. DO NOT apply with spray droplets smaller than the American Society of Agricultural Engineers (ASAE) medium classification. Boom height must be 60 cm or less above the crop or ground.
DO NOT apply by air.

Buffer zones
Use of the following spray methods or equipment DO NOT require a buffer zone: hand-held or backpack sprayer and spot treatment.
The buffer zones specified in the table below are required between the point of direct application and the closest downwind edge of sensitive terrestrial habitats (such as grasslands, forested areas, shelter belts, woodlots, hedgerows, riparian areas and shrublands) and sensitive freshwater habitats (such as lakes, rivers, sloughs, ponds, prairie potholes, creeks, marshes, streams, reservoirs and wetlands).

Method of application – Field sprayer (1)
Crop – Field corn
Buffer Zones (metres) Required for the Protection of:
Freshwater Habitat of Depths:
Less than 1 m – 1
Greater than1 m – 1
Terrestrial Habitat – 5
(1) For field sprayer application, buffer zones can be reduced with the use of drift-reducing spray shields. When using a spray boom fitted with a full shield (shroud, curtain) that extends to the crop canopy, the labeled buffer zone can be reduced by 70%. When using a spray boom where individual nozzles are fitted with cone-shaped shields that are no more than 30 cm above the crop canopy, the labeled buffer zone can be reduced by 30%.

For tank mixes, consult the labels of the tank-mix partners and observe the largest (most restrictive) buffer zone of the products involved in the tank mixture and apply using the coarsest spray (ASAE) category indicated on the labels for those tank mix partners.


RESISTANCE-MANAGEMENT RECOMMENDATIONS
For resistance management, ARMEZON herbicide is a Group 27 herbicide. Any weed population may contain or develop plants naturally resistant to ARMEZON herbicide and other Group 27 herbicides. The resistant biotypes may dominate the weed population if these herbicides are used repeatedly in the same field. Other resistance mechanisms that are not linked to site of action, but specific for individual chemicals, such as enhanced metabolism, may also exist. Appropriate resistance-management strategies should be followed.
To delay herbicide resistance:
Where possible, rotate the use of ARMEZON herbicide or other Group 27 herbicides with different herbicide groups that control the same weeds in a field.
Use tank mixtures with herbicides from a different group when such use is permitted.
Herbicide use should be based on an IPM program that includes scouting, historical information related to herbicide use and crop rotation, and considers tillage (or other mechanical), cultural, biological and other chemical control practices.
Monitor treated weed populations for resistance development.
Prevent movement of resistant weed seeds to other fields by cleaning harvesting and tillage equipment and planting clean seed.
Contact your local extension specialist or certified crop advisors for any additional pesticide resistance-management and/or integrated weed-management recommendations for specific crops and weed biotypes.
For further information or to report suspected resistance, contact BASF at 1-877-371-2273.


WEEDS CONTROLLED
For best performance on broadleaf weeds, spray before the weeds exceed the maximum leaf stage listed in the Application Directions table.
For best performance on grass weeds, spray before they exceed the maximum leaf stage listed in the Application Directions table.
ARMEZON herbicide is effective on biotypes of species listed that may be resistant to triazines or ALS herbicide products.
For field corn, ARMEZON herbicide may be tankmixed with Aatrex 480, atrazine, glyphosate, atrazine plus glyphosate, atrazine plus Frontier Max or atrazine plus glyphosate plus Frontier Max to provide improved control of annual broadleaf and annual grass weeds.
For weed control in sweet corn and seed corn, ARMEZON herbicide must be tankmixed with atrazine. For full broad spectrum seasonal weed control, apply to sweet and seed corn following a pre-emergence application of a residual herbicide such as Frontier Max.


APPLICATION DIRECTIONS
Uniformly apply with properly calibrated ground equipment using 100-200 L water per hectare. Flat-fan nozzle tips are recommended for post-emergence applications. A spray pressure of 140-276 kPa is recommended.
Do not apply when wind speeds exceed 8 km/h or when drift near desirable plants is possible.


SPRAY ADDITIVES
For best adherence and foliar uptake, ARMEZON herbicide may require the addition of spray additives to the spray solution. Consult the Application Direction tables for rates and recommendations.
For application to sweet and seed corn, use Assist Oil Concentrate plus liquid fertilizer (UAN 28%) only with ARMEZON herbicide.


FIELD CORN
ARMEZON herbicide should be used as a broadcast ground treatment in tank mix with atrazine or with atrazine plus Frontier Max for improved residual control of grass weeds. ARMEZON herbicide may be used in tank mix with glyphosate, atrazine plus glyphosate or atrazine plus glyphosate plus Frontier Max for control of a broader spectrum of emerged grass and broadleaf weeds. Refer to the atrazine, glyphosate and Frontier Max labels for precautions and restrictions.


SWEET CORN AND SEED CORN (Hybrids and Inbred Lines)
ARMEZON herbicide must be used as a broadcast ground treatment in tank mix with atrazine for improved weed control. For full broad spectrum seasonal weed control, apply following a pre-emergence application of a residual herbicide such as Frontier Max. Refer to the atrazine label for precautions, restrictions and limitations.
Sweet and seed corn cultivars may vary in their tolerance to herbicides, including a tank mix of ARMEZON herbicide (topramezone) + atrazine (Aatrex Liquid 480 Herbicide). Since not all sweet and seed corn cultivars have been tested for tolerance to a tank mix of topramezone + atrazine, first use should be limited to a small area of each cultivar to confirm tolerance prior to adoption as a general field practice. Additionally, consult your seed supplier for information on the tolerance of specific cultivars of sweet and seed corn to the tank mix of ARMEZON herbicide + atrazine.


TANK MIXES
When ARMEZON herbicide is used in combination with another herbicide, refer to the respective label for rates, methods of application, proper timing, restrictions and precautions. Always use in accordance with the most restrictive label restrictions and precautions.

Tankmix with atrazine (for use in field corn, sweet corn and seed corn – hybrids and inbred lines)
Apply ARMEZON herbicide when the corn is at the 1 to 7-leaf stage, broadleaf weeds are at the 1 to 8-leaf stage and grass weeds are at the 1 to 4-leaf stage.
Refer to the atrazine label for precautions, restrictions and limitations. Always use in accordance with the more restrictive label restrictions and precautions.

Sweet corn and seed corn (hybrids and inbred lines)
Herbicide - ARMEZON herbicide + Aatrex 480 (1) + Assist (2)+ UAN (3)
Rate/ha - 37 mL + 1.04 L (500 g ai/ha)
Weeds Controlled - Common lamb’s quarters, Lady’s thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed Green pigweed
Weeds Suppressed – Velvetleaf, Common chickweed, Green foxtail, Yellow foxtail, Large crabgrass, Barnyard grass

Herbicide - ARMEZON herbicide + atrazine + Assist (2) + UAN (3)
Rate/ha - 37 mL + 500 g ai/ha
Weeds Controlled - Common lamb’s quarters, Lady’s thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed Green pigweed
Weeds Suppressed – Velvetleaf, Common chickweed, Green foxtail, Yellow foxtail, Large crabgrass, Barnyard grass

(1) Other atrazine formulations may require rate calculation adjustment according to percent of active ingredient.
(2) Use at 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution.
(3) Use at 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution.

Field corn
Herbicide - ARMEZON herbicide + Aatrex 480 (1) + Merge (2) OR Assist (3)+ UAN (4)
Rate/ha - 37 mL + 1.04 L (500 g ai/ha)
Weeds Controlled - Common lamb’s quarters, Lady’s thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed Green pigweed
Weeds Suppressed – Velvetleaf, Common chickweed, Green foxtail, Yellow foxtail, Large crabgrass Barnyard grass

Herbicide - ARMEZON herbicide + atrazine + Merge (2) OR Assist (3) + UAN (4)
Rate/ha - 37 mL + 500 g ai/ha
Weeds Controlled - Common lamb’s quarters, Lady’s thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed Green pigweed
Weeds Suppressed – Velvetleaf, Common chickweed, Green foxtail, Yellow foxtail, Large crabgrass Barnyard grass

(1) Other atrazine formulations may require rate calculation adjustment according to percent of active ingredient.
(2) Use Merge Adjuvant at 0.5% v/v, i.e. 5 litres per 1000 L spray solution.
(3) Use at 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution.
(4) Use at 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution.

Tankmix with atrazine plus Frontier Max (for use in field corn)
Apply ARMEZON herbicide when the corn is at the 1 to 3 leaf stage, broadleaf weeds are at the 1 to 8 leaf stage and grass weeds are at the 1 to 4 leaf stage.
Refer to the atrazine and Frontier Max labels for precautions, restrictions and limitations. Always use in accordance with the most restrictive label restrictions and precautions.

Herbicide - ARMEZON herbicide + atrazine + Frontier Max + Merge (1) OR Assist (2) + UAN (3)
Rate/ha - 37 mL + 500 g ai/ha + 756 mL to 963 mL (4)
Weeds Controlled - Common lamb’s quarters, Lady’s thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed, Green pigweed, Green foxtail, Yellow foxtail, Large crabgrass, Barnyard grass, Fall panicum (5), Old witchgrass
Weeds Suppressed – Velvetleaf, Common chickweed

(1) Use Merge Adjuvant at 0.25% v/v, i.e. 2.5 litres per 1000 L spray solution.
(2) Use at 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution.
(3) Use at 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution.
(4) Apply Frontier Max herbicide at the higher label rates on fine textured or high organic soils and for heavier weed problems.
(5) Apply before fall panicum exceeds the 2-leaf growth stage. If applied later, this weed will only be suppressed.

Tankmix with glyphosate
For control of emerged weeds, apply when the corn is at the 1 to 7 leaf stage, broadleaf weeds are at the 1 to 8 leaf stage and grass weeds are at the 1 to 4 leaf stage. Refer to glyphosate label for additional flexibility in weed stages at the time of application.
WARNING: Apply glyphosate on glyphosate tolerant field corn varieties only, i.e. varieties with the Roundup Ready gene. CORN VARIETIES WHICH ARE NOT DESIGNATED AS GLYPHOSATE TOLERANT WILL BE DAMAGED OR DESTROYED BY THIS TREATMENT.
Refer to the glyphosate label for precautions, restrictions and limitations. Always use in accordance with the more restrictive label restrictions and precautions.

Herbicide (1) - ARMEZON herbicide + glyphosate (2)
Rate/ha - 37 mL/ha + (900 g ae/ha)
Weeds Controlled - Common ragweed, Eastern black nightshade, Volunteer Canola (3), Kochia (4), Wild mustard
Weeds Suppressed – Common lamb's quarters, Velvetleaf, Common chickweed, Lady’s thumb, Green foxtail, Yellow foxtail, Large crabgrass, Barnyard grass
Refer to the glyphosate label for additional weed species controlled or suppressed.

(1) Spray additives are not required.
(2) Only use glyphosate products registered for post-emergence application on glyphosate-tolerant corn, where glyphosate is present as isopropylamine salt or potassium salt. A rate of 900 g ae/ha is equivalent to 1.67 L/ha of Roundup WeatherMax or 2.5 L/ha of Roundup Original.
(3) All types including glyphosate tolerant. Apply before volunteer canola exceeds the 6-leaf stage.
(4) All types including glyphosate-resistant. Apply to kochia less than 10 cm.

Tankmix with glyphosate plus atrazine
For control of emerged weeds, apply when the corn is at the 1 to 7 leaf stage, broadleaf weeds are at the 1 to 8 leaf stage and grass weeds are at the 1 to 4 leaf stage. Refer to glyphosate label for additional flexibility in weed stages at the time of application.
WARNING: Apply glyphosate on glyphosate tolerant field corn varieties only, i.e. varieties with the Roundup Ready gene. CORN VARIETIES WHICH ARE NOT DESIGNATED AS GLYPHOSATE TOLERANT WILL BE DAMAGED OR DESTROYED BY THIS TREATMENT.
Refer to the atrazine and glyphosate labels for precautions, restrictions and limitations. Always use in accordance with the more restrictive label restrictions and precautions.

Herbicide - ARMEZON herbicide + glyphosate (2) + atrazine (3)
Rate/ha - 37 mL/ha + (900 g ae/ha) + (500 g ai/ha)
Weeds Controlled - Common lamb's quarters, Lady’s thumb, Common ragweed, Eastern black nightshade, Volunteer Canola (4), Kochia (5), Wild mustard, Redroot pigweed, Green pigweed
Weeds Suppressed – Velvetleaf, Common chickweed, Green foxtail, Yellow foxtail, Large crabgrass, Barnyard grass
Refer to the glyphosate label for additional weed species controlled or suppressed.

(1) Spray additives are not required.
(2) Only use glyphosate products registered for post-emergence application on glyphosate-tolerant corn, where glyphosate is present as isopropylamine salt or potassium salt. A rate of 900 g ae/ha is equivalent to 1.67 L/ha of Roundup WeatherMax or 2.5 L/ha of Roundup Original.
(3) Equivalent to 1.04 L/ha of Aatrex 480.
(4) All types including glyphosate tolerant. Apply before volunteer canola exceeds the 6-leaf stage.
(5) All types including glyphosate-resistant. Apply to kochia less than 10 cm.

Tankmix with atrazine plus glyphosate plus Frontier Max
Apply when the corn is at the 1 to 3 leaf stage, broadleaf weeds are at the 1 to 8 leaf stage and grass weeds are at the 1 to 4 leaf stage. Refer to glyphosate label for additional flexibility in weed stages at the time of application.
WARNING: Apply glyphosate on glyphosate tolerant field corn varieties only, i.e. varieties with the Roundup Ready gene. CORN VARIETIES WHICH ARE NOT DESIGNATED AS GLYPHOSATE TOLERANT WILL BE DAMAGED OR DESTROYED BY THIS TREATMENT.
Refer to the Frontier Max, atrazine and glyphosate labels for precautions, restrictions and limitations. Always use in accordance with the more restrictive label restrictions and precautions.

Herbicide - ARMEZON herbicide + atrazine + Frontier Max herbicide + glyphosate (2)
Rate/ha - 37 mL + 500 g a.i. + 756 mL to 963 Ml (3) + 900 g a.e.
Weeds Controlled - Common lamb’s-quarters, Lady’s thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed, Green pigweed, Green foxtail, Kochia (4), Yellow foxtail, Large crabgrass, Barnyard grass, Fall panicum (5), Old witchgrass, Volunteer canola (6)
Weeds Suppressed – Velvetleaf, Common chickweed
Refer to the glyphosate label for additional weed species controlled or suppressed.

(1) Spray additives are not required.
(2) Only use glyphosate products registered for post-emergence application on glyphosate-tolerant corn, where glyphosate is present as isopropylamine salt or potassium salt. A rate of 900 g ae/ha is equivalent to 1.67 L/ha of Roundup WeatherMax or 2.5 L/ha of Roundup Original.
(3) Apply Frontier Max herbicide at the higher label rates on fine textured or high organic soils and for heavier weed problems.
(4) All types including glyphosate-resistant. Apply to kochia less than 10 cm.
(5) Apply before fall panicum exceeds the 2-leaf growth stage. If applied later, this weed will only be suppressed.
(6) All types including glyphosate tolerant. Apply before volunteer canola exceeds the 6-leaf stage.


MIXING INSTRUCTIONS AND ORDER
ARMEZON herbicide Tank Mixes:
Add dry material first for proper dispersion.
1. Fill sprayer ½ full with clean water and agitate.
2. Add dry tank mix partners into the spray tank and agitate.
3. Add ARMEZON herbicide and thoroughly mix.
4. After the ARMEZON herbicide has visibly dispersed, add any liquid herbicide tank mix partners.
5. Add either Merge Adjuvant to the spray tank or Assist followed by liquid fertilizer (UAN 28%), with the exception of glyphosate tank-mixes.
6. While agitating, fill the remainder of the tank with water up to the proper level.


CROP HARVEST
Do not apply ARMEZON herbicide within 45 days of corn harvest (silage, fodder or grain).
Do not graze or feed treated corn forage, silage, fodder or grain for at least 45 days after an application of ARMEZON herbicide.
Treated seeds grown for seed production are not to be fed to livestock.


ROTATIONAL CROPPING
In the event of crop failure in fields treated with ARMEZON herbicide, only field corn can be planted as a rescue crop. A second application of ARMEZON herbicide cannot be made in the rescue crop.
Fields treated with ARMEZON herbicide can be seeded to winter wheat at a minimum four months after application and can be seeded to spring wheat, field corn, navy (white) beans, soybeans, peas and alfalfa the following year.
Conduct a field bioassay (a test strip grown to maturity) the year before growing any other crop.
If using ARMEZON herbicide in tank mixtures, always refer to the tank mix partner’s product label for any additional recropping restrictions.


PRECAUTIONS
Make only one application of ARMEZON herbicide per year.
1. KEEP OUT OF REACH OF CHILDREN.
2. Avoid breathing spray or spray mist.
3. Avoid contact with skin, eyes, and clothing.
4. Harmful if swallowed.
5. DO NOT APPLY BY AIR.
6. When mixing and loading or applying, wear a long sleeved shirt, long pants, shoes and socks. In addition, wear chemical resistant gloves and protective eyewear (face shield or safety glasses) while mixing and loading.
7. Do not enter or allow worker entry into treated areas during the restricted entry interval (REI) of 12 hours.
8. Do not apply directly to water or areas where surface water is present.
9. Do not contaminate irrigation or drinking water supplies or aquatic habitats by cleaning of equipment or disposal of wastes.
10. Do not apply this product through any type of irrigation system.
11. Do not contaminate domestic or irrigation water. Thoroughly clean application equipment. (See Container Cleaning and Disposal)


SPRAY DRIFT PRECAUTIONS
ARMEZON herbicide may cause injury to desirable trees and plants. Follow these precautions when spraying in the vicinity of sensitive crops:
1. Do not spray ARMEZON herbicide if wind velocity exceeds 8 km/h. Leave an adequate buffer zone between spraying area and sensitive plants.
2. Use high-volume sprays under low pressure. Use coarse sprays since they are less likely to drift than fine sprays. Keep spray pressure below 276 kPa and the spray volume above 200 L/ha unless otherwise required by the nozzle manufacturer.
3. Apply only when the potential for drift to areas of human habitation or areas of human activity such as houses, cottages, schools and recreational areas is minimal. Take into consideration wind speed, wind direction, temperature, application equipment and sprayer settings.


DISPOSAL AND DECONTAMINATION
Container Cleaning and Disposal
Do not reuse this container for any purpose. This is a recyclable container, and is to be disposed of at a container collection site. Contact your local distributor/dealer or municipality for the location of the nearest collection site. Before taking the container to the collection site:
1. Triple- or pressure-rinse the empty container. Add the rinsings to the spray mixture in the tank.
2. Make the empty, rinsed container unsuitable for further use.
If there is no container collection site in your area, dispose of the container in accordance with provincial requirements.
For information on disposal of unused, unwanted product, contact the manufacturer or the provincial regulatory agency. Contact the manufacturer and the provincial regulatory agency in case of a spill, and for clean-up of spills.

ARMEZON herbicide with other tank mixes
Follow these steps to clean the spray equipment:
1. Thoroughly hose down the inside and outside of equipment surfaces while filling the spray tank half-full with water. Flush by operating the sprayer until the system is purged of the rinse water.
2. Fill the tank with water, adding 1 L of household ammonia for every 100 L of water. Operate the spray pump to circulate the ammonia solution through the spray system for 15-20 minutes and discharge a small amount of the ammonia solution throughout the spray boom and nozzles. Let the solution stand for several hours, preferably overnight.
3. Flush the solution out of the spray tank through the boom.
4. Remove the nozzles and screens and flush the system with two tanks full of water.
5. Refer to the tank mix partner’s product label for any additional cleaning instructions not included in the above steps. 

Registered for cultures
Corn