Application of enzymes during bulb tissue extraction for detection of lily symptomless virus by ELISA in Lilium spp J. C. M. BeijersbergenCarola Th. C. Van Der Hulst OriginalPaper Pages: 277 - 283
Enzyme-linked immunosorbent assay (ELISA) for the detection of potato viruses S and M in potato tubers J. A. De BokxP. G. M. PironE. Cother OriginalPaper Pages: 285 - 290
The characteristics of mineral oils in relation to their inhibitory activity on the aphid transmission of potato virus Y J. J. De Wijs OriginalPaper Pages: 291 - 300
Mature plant resistance of potato against some virus diseases. III. Mature plant resistance against potato virus YN, indicated by decrease in ribosome-content in ageing potato plants under field conditions J. H. VenekampA. SchepersC. B. Bus OriginalPaper Pages: 301 - 309
A whitefly-transmitted disease of glasshouse vegetables, a novelty for Europe H. J. M. van DorstN. HuijbertsL. Bos Short Communication Pages: 311 - 313
Symptom expression in elms after inoculation with combination of an aggressive and a non-aggressive strain of Ophiostoma ulmi R. J. SchefferH. M. HeybroekD. M. Elgersma Short Communication Pages: 315 - 317