If you are also considering a lawn treatment with the active ingredient in Actinovate, you may want to research their product called Actino-Iron. It, in addition to the ingredient in Actinovate adds other ingredients oriented to lawn application.
As it is not water soluble, I think a drop spreader (mix it in with your normal fertilizer) would be a good way to apply it. I don't want to sound like a "salesman" for them, but with the benefits I have experienced with Actinovate, I would be inclined to believe their literature on the potential benefits of Actino-Iron. Application rate is 5 pounds per 1000 sq. ft.
http://naturalindustries.com/commerc...tino-iron.html
It's worth a "read" in any event, just to get yourself educated.
Raybo
p.s. Here is a link to it on Amazon, just for reference:
http://www.amazon.com/Natural-Indust...8501422&sr=8-2