From the NC State vegetable cultivars list: "Nenagreen (U.S. 253) - Breeder: R.E. Wester, H.B. Cordner, and P.H Massey, Jr., USDA, Oklahoma Agr. Expt. Sta., and Virginia Polytechnic Inst., respectively. Parentage: Okla. 27 (nematode resistant) x Early Thorogreen, backcrossed once to Early Thorogreen. Resistance: nematodes. Similar: Early Thorogreen. Adaptation: nematode areas. Seed World, 1958 (spring issue)." It is available from Clifton Seed I have root knot nematodes, but probably not in the populations you are experiencing. Have relatively good luck with Thorogreen.

Here is a link that might be useful: Nemagreen lima.

farmerdilla, thank you so very much. I will contact this company asap. Again, thanks.