When applying herbicides, including Drive XLR8 Herbicide Crabgrass Killer, it is not recommended to be used in a hose end sprayer. It is better to use a hand pump or backpack sprayer to ensure the most accurate application.
The Drive XLR8 Label does not specifically mention Big Bluestem grass or Indian grass on the label whether it be as a target pest or as a tolerant species to the product. From the links below from the USDA NRCS it states that those grasses are tolerant to most broadleaf herbicides and should not be harmed if product directions are followed and applied accurately. That being said, you can follow the link below to the USDA Service Center Locator to speak with your local conservationist in your region on what works bests in your area and what products they may recommend.
Big Bluestem Grass
http://plants.usda.gov/factsheet/pdf/fs_ange.pdf
Indian grass
http://plants.usda.gov/factsheet/pdf/fs_sonu2.pdf
USDA Service Center Locator
The most important factor when planning to tank mix various herbicides is referring to all manufacturer's product labels for tank mixing restrictions. In this case, because Drive XLR8 Herbicide Crabgrass Killer requires the use of an MSO Surfactant like Prime Source Duo Stick Select in order to be effective, it would not be recommended due to the fact that most Turflon Ester product labels advise not adding a surfactant for lawn treatments as this can cause damage to turf grass.
In a 40 gallon tank you would add 64 oz of Drive XLR8 and 10 oz of methylated seed oil surfactant, and this should just about cover 1 acre. Keep in mind that it is most important to use the correct amount of product for the area you are treating, rather than an exact amount of water.
The single application maximum rate for Drive XLR8 Herbicide is 1.45 oz per 1000 sq ft, or 64 oz per Acre. The product label gives instructions for split applications depending on the type of annual grass you are treating. Otherwise the full rate would be used for most applications.
Most herbicides such as Drive XLR8 and Trimec Classic can be mixed with other EPA-registered herbicides. We recommend that you read and follow the label instructions to prepare a tank mix test to ensure that the two products mix well and there is no clumping or separating.
Depending on the type of fescue you have, Drive XLR8 Herbicide can be used at the time of seeding. If you are overseeding with fine fescue, it is recommended that you use Drive XLR8 at least 7 days before seeding or 28 days after emergence of the new seed. If you are overseeding with tall fescue, Drive XLR8 can be used at any time. We do recommend using an MSO surfactant with this product as well. Please check the label for complete application instructions.
Before mixing Battleship III and Drive XLR8, a simple jar test is required to ensure compatibility of herbicides and/or additives, like DyneAmic that's recommended to be used with Drive XLR8. Refer to the respective product labels for specific use directions, precautions, and limitations before tank mixing and we recommend that you follow the label instructions of the product with the most restrictions. Be sure that both products are safe to use on the turf you have.
Drive XLR8 Herbicide Crabgrass Killer is not labeled to be used around Asiatic Jasmine however we do have Grass Out Max Herbicide that is labeled to treat grassy weeds in Asiatic Jasmine as well as most landscape, home and garden, ornamental, agricultural and non-crop uses.
You can view the full list of tolerant ornamentals on the product label.
