Sunn hemp has been demonstrated to reduce populations of sedentary endoparasitic nematodes, a group that remains in one location and feeds on roots throughout their life cycle. This group includes root knot (Meloidogyne spp.), sting (Belonolaimus longicaudatus), stubby root (Paratrichodorous minor), dagger (Xiphinema americanum) and burrowing (Radopholus similis) nematodes. A summary of the effects of sunn hemp and other cover crops on plant-parasitic nematodes is presented in