The population density ofHeterodera trifolii in pastures in the netherlands and its importance for the growth of white clover J. W. SeinhorstA. K. Sen Articles Pages: 169 - 183
Improvement of white clover growth with non-phytotoxic compounds known to control soil parasites G. C. EnnikJ. Kort Articles Pages: 184 - 195
Alteration in the susceptibility ofvicia faba toBotrytis fabae by various pretreatments of the leaves H. H. Sol Articles Pages: 196 - 202
Acceleration of apothecia development ofSclerotinia Trifoliorum J. Dijkstra Short Communication Pages: 203 - 203
Samenvattingen van de Voordrachten, Gehouden op de Planteziektendagen, 24 en 25 Februari 1966, te Wageningen Announcement Pages: 204 - 211
Activity against rust and powdery mildew of somepara phenylenediamines and related compounds G. J. NiemannJ. Dekker Articles Pages: 213 - 221
Presence of a substance in the white skin of young tulip bulbs which inhibits growth ofFusarium oxysporum B. H. H. Bergman Articles Pages: 222 - 230
Hostplants ofAgrobacterium gypsophilae H. P. Maas GeesteranusHetty Barendsen Articles Pages: 231 - 232
The biology, damage and control of the poplar and willow borer,Cryptorrhynchus lapathi D. Doom Articles Pages: 233 - 240
Pratylenchoides laticauda N.SP., a new endoparasitic phytonematode A. L. BraunP. A. A. Loof Articles Pages: 241 - 245
Does wheat mosaic virus belong to the tobacco rattle virus group? H. A. van Hoof Short Communications Pages: 246 - 247
Viruses of the tobacco rattle virus group in Northern Italy: Their vectors and serological relationships H. A. van HoofD. Z. MaatJ. W. Seinhorst Articles Pages: 253 - 258
The development of a viral antigen in the hemocytes ofPieris brassicae inoculated withTipula iridescent virus A. R. OliveiraM. B. Ponsen Articles Pages: 259 - 264
Identification of an aphid-transmitted cowpea mosaic virus O. LovisoloM. Conti Articles Pages: 265 - 269
Virus-free plants of iris ‘wedgwood’ obtained by meristem culture E. Rhoda BaruchFrederika Quak Articles Pages: 270 - 273
A microscopic study of powdery mildew on barley after application of the systemic compound wepsyn J. F. C. MagendansJ. Dekker Articles Pages: 274 - 278
Rotting by spread of mycelium from ascospore lesions ofSclerotinia trifoliorum J. Dijkstra Articles Pages: 279 - 283
Corynebacterium fascians andBotrytis cinerea inPelargonium zonale an aspect from the many factors causing the wilting of pelargonium H.P. Maas GeesteranusP. C. KoekTh. H. G. B. M. Wegman Articles Pages: 285 - 298
Winter-type california tobacco rattle virus in its relation to the infected cell G. A. De Zoeten Articles Pages: 311 - 313
Bolrot van lelies, veroorzaakt doorSclerotium wakkeri (zwartbenigheid) H. A. van Kesteren Articles Pages: 314 - 316
Footrot of tomatoes, caused by twoPhytophthora species K. VerhoeffL. Weber Short Communications Pages: 317 - 318