I am developping a poor man way of fencing beans (fava and green as well), I guess I am just finding back what were doing people before. The idea is to skip all kind of expensive plastic rope, wires or whatever. I use hazelnut and chestnut poles that lasts several years (chestnut, forever) that can be placed rapidly and interlace them with branches that i shape with a knife to put them in the ground.
I have already carried around one hundred of this poles on my back (no horse, no tractor road to the wood).