Iron is not good as a foliar unless the spray system deposits evenly and accurately. I do not consider flood nozzles used as a boomless spray system even and accurate enough for that. Think spots in the lawn. A Cushman with a boom is probably the best for applying iron.
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775
Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738