General Information


BROMAC Advanced is formulated as an emulsifiable concentrate of octanoic acid and heptanoic acid esters of bromoxynil containing the equivalent of 2.5 pounds of bromoxynil per gallon and 2.5 pounds per gallon of isooctyl ester of MCPA.

BROMAC Advanced is a selective postemergence herbicide for control of important broadleaf weeds infesting wheat, barley, oats, rye, flax and grass grown for sod. Optimum weed control is obtained when BROMAC Advanced is applied to actively growing weed seedlings. BROMAC Advanced is primarily a contact herbicide, therefore thorough coverage of the weed seedlings is essential for optimum control.

BROMAC Advanced has little residual activity. Therefore subsequent flushes of weeds will not be controlled by the initial treatment. Generally crops that form a good canopy will help shade subsequent weed flushes.

Occasional transitory leaf burn may occur. The temporary leaf burn is similar to that seen with liquid fertilizer. Because the activity of BROMAC Advanced is mainly contact, recovery of the crop is generally rapid with no lasting effect. Frequency and amount of leaf burn may be greater when crops are stressed by abrasive winds, cool to cold evening temperatures or mechanical injury, such as that caused by hail, sleet or insect feeding. To reduce the potential for temporary leaf burn, applications should be made to dry foliage in the recommended spray volumes per acre when weather conditions are not extreme.


BROMAC Advanced can be applied to registered use areas by ground, aerial and sprinkler irrigation equipment.


Select a spray volume and delivery system that will ensure thorough and uniform spray coverage. For optimum spray distribution and thorough coverage use of flat fan nozzles spaced no more than 20 inches on the boom with a spray pressure of 40-50 psi are recommended. Nozzle types, nozzle spacings and lower spray pressures that produce coarse spray droplets may not provide adequate coverage of the weeds to ensure optimum control. Raindrop nozzles and flood nozzles are not recommended as weed control with BROMAC Advanced may be reduced. A spray volume of 10 to 20 gallons per acre (GPA) is recommended for optimum spray coverage.

A maximum ground speed of 10 mph is suggested. Ground applications made when dry, dusty field conditions exist may provide reduced weed control in wheel track areas. Applications using less than 10 gallons per acre may result in reduced weed control.

When weed infestations are heavy, use of higher spray volumes will be helpful in obtaining uniform weed coverage. If you are unsure of the infestation level or size of crop, consult your local agronomist or extension service.

Do not apply when winds are gusty or when other conditions favor poor spray coverage and/or off target spray movement.


Use orifice discs, cores and nozzle types and arrangements that will provide for optimum spray distribution and maximum coverage. A minimum spray volume of 5 GPA and a maximum pressure of 40 psi are recommended. A minimum spray volume of 3 gallons per acre may be used if crop canopy and weed density allow adequate spray coverage. Aerial applications using less than 5 gallons of spray volume per acre may result in reduced weed control.

Do not apply during inversion conditions, when winds are gusty or when other conditions favor poor spray coverage and/or off target spray movement. Off target spray movement can be minimized by increasing the spray volume per acre and not applying when winds exceed 10 mph.

Do not apply with a nozzle height greater than 4 feet above the crop canopy.


BROMAC Advanced can be applied through sprinkler irrigation systems to wheat, barley, oats, rye and grasses grown for sod.

Apply BROMAC Advanced through sprinkler systems including center pivot, lateral move, side (wheel) roll, solid set or hand move irrigation systems only. If hand moved pipe is used for chemigation, the pipe must not be handled in any way until 24 hours after chemigation has been completed and residues have been flushed from the system. When applying by chemigation, no person may enter the application site unless in an enclosed vehicle. Do not apply this product through any other type of irrigation system.

Do not enter or allow worker entry into treated crops during the restricted entry interval (REI). For all crops except turf, the REI is 24 hours. The REI for harvesting sod farm turf is 12 days. The REI for other turf activities is 24 hours. For uses on turf grown for transplanting (e.g. on sod farms), notify workers of the application by warning them orally and by posting warning signs at entrances to treated areas.

Limitations, Restrictions, and Exceptions


Apply to flax that is 2 to 8 inches in height. Do not apply BROMAC Advanced to flax during or after the bud stage.


Apply to MOST SUSCEPTIBLE weeds that do not exceed the 4 leaf stage, 2 inches in height or 1 inch in diameter, whichever comes first.


RESTRICTIONS AND PRECAUTIONS: Flax (Linum usitatissium only)

- Do not apply if temperatures are expected to exceed 85° F at or 3 days following application or crop injury may occur.

- Unacceptable crop injury may occur following BROMAC Advanced application to flax grown on high organic, peat type soils.

- Application under high humidity conditions can injure flax.

- Unless otherwise instructed, do not apply BROMAC Advanced to flax with crop oil concentrate, surfactants or nitrogen solutions.

- Do not use on ornamental flax.

- Do not apply more than 0.72 pint of BROMAC Advanced per acre in a single growing season.

- Do not plant rotational crops within 30 days following BROMAC Advanced application.

Restricted Entry Interval

24 hours