Answer by wollington for Is it safe to grow and eat food on post-nuclear-war land?

I believe that in a highly irradiated area, growing crops and subsequently eating those crops could be very dangerous. That dirt's irradiated man, so is that water, and those crops will be too.
This article might help a bit and if not, it's an interesting read regardless: https://phys.org/news/2015-03-crops-radiation-contaminated-soil.html