carbon emitting from RMH/ carbon capture by veggies?

Question: A fully working RMH, would it emit much carbon? Which plants around a homestead would be best for capturing carbon and then eating? Thanks.

What's an RMH? Generally speaking woody perennials are best, with dense and long-lived species ideal. These are followed by herbaceous perennials, and finally by well – managed annuals, ideally in a minimum tillage or mulched situation with crop rotation and cover crops.