Researchers have found that rust-coated irrigation pivots could signal an absence of nitrate in nearby groundwater -- and position them as a guidepost when monitoring for the contaminant, which has ...

If your sprinkler water comes from a well, you know all about rust. Your house probably has been marked with that dirty brownish-bronze color, which, by the way, does not match any color at your local ...

Oh, we don’t have to worry about that area. They have red pivots. On its face, the anecdote was clear enough. The “red” in question, Troy Gilmore knew, was rust. The pivots, meanwhile, were center ...