What is wrong with my potatoes?
Hello. It's my first time growing potatoes, specifically Red Norland, and I have them in a canvas-y container I had picked up years ago someplace. They were growing fine, like crazy, and now the leaves are yellowing, spotted, and something is eating them. Tried to do some research online, and it appeared to be a magnesium problem so I watered them with epsom salts, with no results. It also was maybe nitrogen, so all I had with nitrogen was regular Miracle Grow so I tried that, no result. I had an organic fungicide so I sprayed them with that. I sprinkled egg shells around for the fun of it. They look worse than ever. The only bugs I can see on them are ants, so I don't know what could be eating the leaves.
What can I do to fix them? Or do I not need to and the potatoes will be fine? The funny thing, to me, is the container has a divider down the middle. The one side started with the yellowing long before the other. I don't know what that might mean, just seemed odd to me.