I think laying strips of weed barrier between the rows would work slick If you got the good stuff and threw enough dirt on it to hold it down. you could roll it up in the fall and reuse it again the next year. I'd try it if I didn't dislike snakes so bad but that stuff is a snake magnet. my "garden crew" is an old WC Allis Chalmers with two row mounted cultivators, I would have a weedy mess without it.