limestone-riddled, poor, high ph soil

hi all
I need you help else I might go crazy
our soil is poor , high in ph , with high amount of calcium carbonate , it is great in growing all kind of weed , especially pampas , nieghbours are doing fine with chemical and spraying , but am still holding my posation with little out come , can any body tell me how can permaculture save my soul ?

bury dead trees, add sulphur pastiles, and some iron.

These will help the soil grow fungi and bacteria, then the plants can use and store the rest of the nutrients from top dressing fertilizer and compost.

Morgan thank you
sure I will give it a try , but I would like to know what kind of iron you mean? , then I want you to know it's a ten acres am talking about