We are switching to a 100% liquid program. In the past our tankers have not had a large problem with burning. But yes, spraying or applying when its steamy hot is a poor choice. We spray at 3 gallons so its more high volume.
We are in MN so cool season grasses.
I should specify, first round is Pre-em and fert, 2nd is herbicide and fert mixed w/ X10. round 4 is herb and fert.
Usually we arent applying fert when its super hot, just herbicide.