Liberty 280 SL Herbicide Product Label goes over detailed info in regards to maximum amounts of active ingredient and ounces of product per acre that can be applied per spray and per year. You would need to refer to the product label charts for the crop type you are spraying over, to determine if you are able to do a follow up application and what interval to apply it from the first treatment. For more specific advice we would suggest contacting the manufacturer at 800-992-5994
Liberty 280 SL Herbicide is a non-selective herbicide, so it will affect whatever plants you spray with it. If you are targeting weeds that are around desirable plants such as daylilies, then you would need to spot treat the target weeds very carefully so that there is no overspray onto the daylilies.