I worked with a guy that gardened for food. His method was to disc his one acre plot then after deciding what he wanted to eat would mix all the seeds together. Then he would sow them about. A final light disc by a local farmer who would wait for him to sow. Done.
Then in about two months he would walk though his garden taking anything he found. He would do this harvest walk about once a week sometime more if the bounty warranted the walk.
Bill