John from Nashville, Tn writes
Very compacted soil in tall fescue lawn and needs mechanical aeration annually. I will not be overseeding and need information on the timing of Prodiamine 65 WDG treatments.
Aerating should be done prior to applying pre emergents such as Prodiamine 65 WDG (Generic Barricade) and can be done 2 times a year if needed (March-April and August-October). Do not aerate or detach lawns after pre emergent applications as this will disturb and break the barrier the herbicide is providing against weeds. Effective pre emergent control of weeds is relies heavily on correct timing of the application. In spring, pre emergent applications need to be done when the soil temperature average is just under 55 degrees consecutlvely for 4-5 days. In the fall, pre emergents need to be applied when soil temps begin to drop to 70 degrees and continue to cool. Pleae contact your County Extension Office for exact timing recommendations in your area or use Syngenta’s GreenCast Soil Temperature Website for soil temperature averages and current readings. View our Cool Season Lawn Care Schedule for more information.
Answer last updated on: 04/04/2022
