Resistance levels in Coffea arabica to Gibberella xylarioides and distribution pattern of the disease N. A. Van Der GraaffR. Pieters OriginalPaper Pages: 117 - 120
Race-specific aspects of polygenic resistance of barley to leaf rust, Puccinia hordei J. E. Parlevliet OriginalPaper Pages: 121 - 126
A study of the development of Ophiostoma ulmi in elms with immunological techniques D. M. ElgersmaP. A. Steerenberg OriginalPaper Pages: 127 - 133
Pythium uncinulatum sp. nov. and P. tracheiphilum pathogenic to lettuce Ida BlokA. J. van der Plaats-Niterink OriginalPaper Pages: 135 - 147
Potato leafroll virus: antiserum preparation and detection in potato leaves and sprouts with the enzyme-linked immunosorbent assay (ELISA) D. Z. MaatJ. A. de Bokx OriginalPaper Pages: 149 - 156