Well it’s probably a good thing I had excess water flowing through the yard because the couple of trees I had on the slope, above the water table, had nitrogen damage to their newer leaves today. I ran a few gallons of water through the root zone to try to dilute it some more. Apparently 4tbsp of 46-0-0 in a half gallon of water is too concentrated for 1 tree.
I think I’ll cut back to about 1tbsp and just apply more frequently. They’re voracious N eaters, but apparently I overstuffed them.