My sister use to raise asparagus for market in Michigan. She salted the asparagus field for better production. Not quit sure why but that is what she told me. She had an acre and sold to a few supermarkets.
A friend use concrete reinforcement wire for tomato cages. The wire is not cheap but it sure is strong and doesnt fall down. Someone gave the wire to him. Im going to use 6 foot wood stakes and wire to make cages this year. h.h.