1. In memoriam

   • P. K. Schenk

   Announcement Pages: 179 - 180

2. In memoriam

   • H. J. de Fluiter

   Announcement Pages: 181 - 182

3. In memoriam

   • J. Dekker

   Announcement Pages: 182 - 183

4. Studies on Botrytis cinerea in tomatoes. Effect of soil nitrogen level and of methods of deleafing upon the occurrence of B. cinerea under commercial conditions

   • K. Verhoeff

   OriginalPaper Pages: 184 - 192

5. Effect of 6-azauracil on infection with tobacco mosaic virus

   • Jeanne Dijkstra
   • J. J. S. van Rensen

   OriginalPaper Pages: 193 - 201

6. Investigations into the cause of the phloem necrosis disease of Coffea liberica in Surinam, South America

   • H. Vermeulen

   OriginalPaper Pages: 202 - 218

7. Effect of 6-azauracil against apple powdery mildew and apple scab

   • J. Dekker
   • G. S. Roosje

   OriginalPaper Pages: 219 - 226

8. Nacobbus serendipiticus, a plant parasitic nematode new to The Netherlands

   • N. de Bruijn
   • S. Stemerding

   Short Communications Pages: 227 - 228

9. A biochemical mechanism of natural resistance of apple to Venturia inaequalis

   • J. Raa
   • A. Kaars Sijpesteijn

   Short Communications Pages: 229 - 231

10. Rare symptoms on chrysanthemum morifolium infected with Puccinia horiana

    • J. C. Zadoks
    • A. Kodde

    Short Communications Pages: 232 - 233

11. Evidence for the presence of the Ohio strain III of tobacco mosaic virus in tomato in The Netherlands

    • A. Th. B. Rast

    Short Communications Pages: 234 - 236

12. Boekbesprekingen

    • D.
    • A. J. P. Oort
    • J. de Wilde

    BookReview Pages: 237 - 238