Autumn Care 6 - 12 - 12 may state on the product label that it can be used on turf but it does not give rates for doing so and we are unable to advise on this. We would recommend reaching out to the manufacturer directly to see if they have further information on this use. They can be reached at 800-648-7626
Yes, Autumn Care 6 - 12 - 12 can be applied using correctly calibrated fertilizer injection equipment no lower than 8 inches. Apply 2-3 gallons of tank mix per inch of trunk diameter. Please review the product label for mix rates and more information.