Performance of scab resistant potato varieties in western Nebraska H. O. WernerR. F. Sandsted OriginalPaper Pages: 645 - 658
Effect of aphid control on the spread of leafroll in potatoes K. E. GibsonB. J. LandisE. C. Klostermeyer OriginalPaper Pages: 658 - 666
Naturally occurring strains of the potato leaf roll virus R. E. WebbR. H. LarsonJ. C. Walker OriginalPaper Pages: 667 - 671