General Information


Quali-Pro Oxadiazon 2G is a selective, pre-emergent herbicide for control of annual grasses and many broadleaf weeds in commercial turf and on a wide variety of woody ornamental shrubs, vines, and trees. Quali-Pro Oxadiazon 2G controls weeds by killing the young weed seedlings as they come in contact with the herbicide during germination.

For best results, water-in the product as soon as practical after application.

10-10-10 fertilizer with secondary micronutrients is the carrier for the herbicide. Nutrients will be supplied according to the rates applied, but they are inert to the herbicide and its activity.

State Specific Restrictions:

- The state of Arizona has not approved this product for use on agricultural sites. Do not use this product on uses considered by the Arizona statutes to be agricultural uses.

DO NOT apply more than 300 lbs. Quali-Pro Oxadiazon 2G per acre per year (equivalent to 6 lbs. a.i./A/year) except in areas where there is heavy weed infestation. In areas of heavy weed infestation, the maximum application rate is 400 lbs. Quali-Pro Oxadiazon 2G per acre per year (equivalent to 8 lbs. a.i./A/year).

DO NOT apply more than 200 lbs. Quali-Pro Oxadiazon 2G per acre (equivalent to 4 lbs. a.i./A) in a single application.

Limitations, Restrictions, and Exceptions


Apply Quali-Pro Oxadiazon 2G anytime during the year, prior to weed seed germination, for weed control. Quali-Pro Oxadiazon 2G can be applied to both newly transplanted and established ornamentals. Application can be made to actively growing or dormant ornamentals. Rainfall or overhead irrigation after application of Quali-Pro Oxadiazon 2G will improve weed control activity. Quali-Pro Oxadiazon 2G should not be mixed into the soil. Cultivating or disturbing the soil may reduce the weed control activity of Quali-Pro Oxadiazon 2G. DO NOT apply to wet foliage or under conditions in which granules will collect on leaves.


Ground Application - Apply Quali-Pro Oxadiazon 2G broadcast to ornamentals at 100 to 200 pounds of product per acre (or 2 1/4 to 4 1/2 pounds per 1000 sq. ft.) depending on the weeds to be controlled, as listed below. Remove existing weed growth before application.

Quali-Pro Oxadiazon 2G at 100 to 200 pounds (2.0 to 4.0 pounds of active ingredient) per acre is effective in controlling annual grasses and broad-leaf weeds.


For the control of liverwort (Marchantia spp.) in California, Goosegrass (Eleusine Indica) and Prostrate Spurge (Euphorbia supina) use 200 pounds Quali- Pro Oxadiazon 2G (4.0 pounds of active ingredient) per acre.

Eveningprimrose, Galinsoga, Swinecress and Barnyardgrass : Use 150 to 200 pounds Quali-Pro Oxadiazon 2G (3.0 to 4.0 pounds of active ingredient) per acre for less susceptible weeds.

Restricted Entry Interval

12 hours