I have ten acres I sprayed with 2.5 quarts per acre glyphosate. It had no effect on the teaweed (spiny sida). My neighbor row cropper doesnt want me to spray 24d because of possible drift. Keystone pest solutions indicated tryclopyr would be an alternative, but the residual could affect planting up to two months. My only other option is to disk the ten acres. Probably going to take two passes with a disk - maybe three. Two days with a disk instead of two hours with a sprayer. Anyone have any experience with tryclopyr and residual? Keystone even said their was potential drift with tryclopyr in warm weather. I said what is considered warm and they said anything over 75 degrees. I just laughed.