Powdery mildew on winter wheat in Bulgaria, 1980: Relations between disease incidence, disease severity, and yield T. D. ZaharievaW. A. J. De MillianoJ. C. Zadoks OriginalPaper Pages: 41 - 54
Further characterization of melon necrotic spot virus causing severe disease in glasshouse cucumbers in the Netherlands and its control L. BosH. J. M. Van DorstD. Z. Maat OriginalPaper Pages: 55 - 69
Infection and necrosis of cowpea mesophyll cells by tobacco necrosis virus and two strains of tobacco mosaic virus J. Salinas CalveteD. H. Wieringa-Brants OriginalPaper Pages: 71 - 78
Isolation and identification of hyperparasitic fungi associated with Erysiphaceae T. HijwegenH. Buchenauer OriginalPaper Pages: 79 - 83