Picked up some NPP 1-2-3 from ICT. Want to use it on 3 lawns infected with Necrotic Ring Spot. All three lawns had bad flare ups late last summer, and some of the frogeyes even remain up to now. Looks like a good stretch of warm (70 deg +) weather this coming week. Lawns are not stressed now. Is it a good time to put down a preventative app of 1-2-3 NPP at this point? Soil temp looks to be 60 or so and likely to go up this week. OR Should I put down a curative rate of this product since there are active pathogens on each of these properties? I would ask ICT Bill but cannot get ahold of him at all.