General Information


VELPAR ALFAMAX GOLD herbicide is a waterdispersible granule that is mixed in water and applied as a spray for weed control in alfalfa.

VELPAR ALFAMAX GOLD is an effective general herbicide providing both contact and residual control of many annual and biennial weeds.

VELPAR ALFAMAX GOLD is noncorrosive to equipment.

Caution should be exercised when applying VELPAR ALFAMAX GOLD near desirable trees or shrubs as they can absorb VELPAR ALFAMAX GOLD through roots extending into treated areas.


VELPAR ALFAMAX GOLD is absorbed through the roots and foliage. Moisture is required to activate VELPAR ALFAMAX GOLD in the soil. Best results are obtained when the soil is moist at the time of application and 1/2–1 inch of rainfall occurs within 2 weeks after application.

For best results, apply VELPAR ALFAMAX GOLD preemergence or postemergence when weeds are less than 2 inches in height or diameter. Herbicidal activity is most effective under conditions of high temperature (above 80 °F), high humidity, and good soil moisture. Herbicidal activity may be reduced when vegetation is dormant, semi-dormant, or under stress(e.g. temperature or moisture).

Herbicidal activity will usually appear within 2 weeks after application to susceptible plants under warm, humid conditions; while 4–6 weeks may be required when weather is cool or dry, or when susceptible plants are under stress. If rainfall after application is inadequate to activate VELPAR ALFAMAX GOLD in the soil, plants may recover from contact effects and continue to grow.

The degree and duration of control will depend on the following:

- Use rate

- Weed spectrum and size at time of application

- Environmental conditions at and following treatment

Where a rate range is shown, use the higher levels of the dosage range on hard-to-control species, fine-textured soils, or soils containing greater than 5% organic matter or carbon. Refer to the USE RATES table for rate ranges.


VELPARALFAMAXGOLD may be applied by ground equipment and, where permitted, aerial equipment. Use rates, minimum spray gallonage, and other application information are described for various uses.


Before spraying, calibrate equipment to determine the quantity of water necessary to uniformly and thoroughly cover the vegetation and soil in a measured area to be treated. Make sure the volume of water is sufficient to completely suspend the VELPAR ALFAMAX GOLD.


When herbicides that affect the same biological site of action are used repeatedly over several years to control the same weed species in the same field, naturally-occurring resistant biotypes may survive a correctly applied herbicide treatment, propagate, and become dominant in that field.

Adequate control of these resistant weed biotypes cannot be expected. If weed control is unsatisfactory, it may be necessary to retreat the problem area using a product affecting a different site of action.

To better manage herbicide resistance through delaying the proliferation and possible dominance of herbicide resistant weed biotypes, it may be necessary to change cultural practices within and between crop seasons such as using a combination of tillage, retreatment, tank-mix partners and/or sequential herbicide applications that have a different site of action. Weed escapes that are allowed to go to seed will promote the spread of resistant biotypes.

It is advisable to keep accurate records of pesticides applied to individual fields to help obtain information on the spread and dispersal of resistant biotypes. Consult your agricultural dealer, consultant, applicator, and/or appropriate state agricultural extension service representative for specific alternative cultural practices or herbicide recommendations available in your area.


This product may be used as part of an Integrated Pest Management (IPM) program that can include biological, cultural, and genetic practices aimed at preventing economic pest damage. IPM principles and practices include field scouting or other detection methods, correct target pest identification, population monitoring, and treating when target pest populations reach locally determined action thresholds. Consult your state cooperative extension service, professional consultants or other qualified authorities to determine appropriate action treatment threshold levels for treating specific pest/crop systems in your area.

Limitations, Restrictions, and Exceptions


VELPAR ALFAMAX GOLD is registered for control of certain weeds in established alfalfa grown for hay.

- Do not apply within 30 days of harvest (cutting for hay), or feeding of forage or grazing.

- Do not exceed 1.5 pounds active ingredient hexazinone per acre per year.



In the following states, make a single application during winter months when alfalfa plants are in the least active stage of growth: Arizona, California, Colorado, Idaho, Kansas, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South, Texas, Utah, Washington, and Wyoming.

NOTE: Severe alfalfa injury may result following application, if after cutting the regrowth is more than 2 inches high, or there is significant stubble left after cutting or grazing, or the air temperature is above 90 °F.

In the following states, make a single application in the spring before new growth begins: Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, andWisconsin


Make a single application after alfalfa becomes dormant and before new growth begins in the spring. Where weeds have emerged, use a surfactant.


Use higher rates on hard-to-control species, 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.



VELPAR ALFAMAX GOLD is registered for the control or suppression of many annual broadleaf weeds and

grasses in established alfalfa grown for seed.



- Do not stress the alfalfa as crop injury may occur. Conditions that might cause injury could include drought stress, or induced drought stress to stimulate seed set, followed by irrigation resulting in a rapid uptake of product into the plant.

- Do not apply more than 2.2 pounds of product per acre on fields with sandy loam or loamy sand soils having 1–2% organic matter.

- Do not apply more than 2.2 pounds of product per acre on seed alfalfa that has been established for only one growing season.

- If abnormally dry conditions exist following application, restrict the first irrigation to no more than 1/2 inch of water.

- Injury or reduced seed production may occur when applications of VELPAR ALFAMAX GOLD are made to alfalfa planted in fields having a shallow hardpan layer.

- Do not use VELPAR ALFAMAX GOLD on gravelly or rocky soils, exposed sub-soils, hardpan, sand, poorly

drained soil, or alkali soils.

- Crop injury, including mortality, or reduced flowering or seed set, may result in fields with restricted root growth due to non-uniform soil profiles such as gravel bases and clay lenses.

- Do not use VELPAR ALFAMAX GOLD on fields with sandy loam or loamy sand soils having less than 1% organic matter.

Pre-Harvest Interval

30 days

Restricted Entry Interval

48 hours