Sorry, I just put in the link because I figured people might be confused by me saying "rust" without it. I'm basing my comments on reading The Wizard and the P

Sorry, I just put in the link because I figured people might be confused by me saying "rust" without it. I'm basing my comments on reading The Wizard and the Prophet which gets into the nuts and bolts of the Green Revolution and the various research programs involved. I don't have an online source on hand better than what either of us could Google.