Korean natural farming (KNF) is an organic agricultural practice that takes advantage of indigenous microorganisms (IMO) (bacteria, fungi, nematodes and protozoa) to produce fertile soils that yield high output without the use of herbicides or pesticides. KNF emphasizes self-sufficiency by limiting external inputs and relying on recycled farm waste to produce biologically active inputs. While this practice has grown in popularity, scientific evidence of the benefits of KNF is relatively limited.