1. Bud necrosis, a storage disease of tulips. II. Analysis of disease-promoting storage conditions

   • W. J. De Munk

   OriginalPaper Pages: 177 - 186

2. Resistance to benomyl and some chemically related compounds in strains of Penicillium species

   • G. J. Bollen

   OriginalPaper Pages: 187 - 193

3. Influence of fumigations with NO₂ on growth and yield of tomato plants

   • F. H. F. G. Spierings

   OriginalPaper Pages: 194 - 200

4. Three new beetle vectors of rice yellow mottle virus in Kenya

   • W. Bakker

   OriginalPaper Pages: 201 - 206

5. Book reviews

   • J. Dijkstra
   • G. W. Ankersmit
   • A. J. van der Plaats-Niterink

   BookReview Pages: 207 - 208