Originally Posted by americanlawn
The Midwest has had no rain for a month. Most customers don't water cuz they're cheap like me. I believe in adding organic matter to poor soils, but nothing works unless you can get the product into the soil (root system). We're applying 50% slow release nutrients on lawns right now, so these nutrients will be available when rainfall & cooler temps arrive. Kinda like a preemergent only with nutrients instead of pesticides. ISU research also proves this. Lawns recover more quickly & stronger when they are fertilized during summer months.
That is one study I would like to analyze to see where the line is drawn between poor fertility needing fresh N apps and N burning...
The Late Spring app is the Summer app... once the temps cool around mid Aug. I'll be putting down the second round of fertilizer...
Do you have that ISU Research???