Good point. I am in a hot area and the last thing that ever happens is volatilization. Now if you go spread 100 lb of urea over a dry dirt field, and do not water it yes. This is grass we are talking about, grass that has moisture or irrigation. I watch the N and source of N to prevent problems with soil pH and excessive top growth at the expense of root growth. I have walloped lawns with 2 lb of N to get it to grow. When I am doing a grow in after verticutting or a new plug or sprig job, N per month is up to 3 lb per month divided into 7 day applications. No burn problems because if the lawn does not have a correctly functioning automatic irrigation system, I am out.

 

I know you needed this a little while ago but we will use iorn, calcium, magnesum and Blue dye in our spray equipment for an over night green up. I know it sounds bad but if you need to make a show you do what you must.