I looked at the links, probably too quickly, and believe only corn stover was mentioned, which makes me wonder if it would work on cane???
There was a link to the researcher, I believe. The type of lime for making pickles was mentioned in the first link, and I doubt that is the same as the lime for plaster, etc.
I've made so few pickles other than watermelon rind, and not used lime, so no little about that lime and guess it may be either to keep pickles from getting mushy or to enhance crispness of dill pickles, maybe others.
Good luck with trying the process. Feed is so scarce, yet we in west central SD see tons and tons of hay 'going south' and even more in the past month. Some trucks are Canadian licensed, but we have seen many bales springing up on CRP fields even in our severe drought area, all seeming to be for sale. We think we have enough, after buying a little locally. And selling lots more cattle than we want to right now.
mrj