Article 42(4)
1. Ditylenchus destructor Thorne — Potato tuber nematode
2. Ditylenchus dipsaci (Kühn) Filipjev — Stem nematode
3. Globodera rostochiensis (Wollenweber) Behrens and Globodera pallida Stone Behrens — Potato cyst nematodes
4. Clavibacter michiganensis subsp. insidios (McCulloch) Davis et al. (syn. Corynebacterium insidiosum (McCulloch) Jensen) — Bacterial wilt of Lucerne
5. Clavibacter michiganensis subsp. michiganensis (Smith) Davis et al. (syn. Corynebacterium michiganse (Smith) Jensen pv. michiganse Dye and Kemp) — Bacterial canker of tomato
6. Erwinia amylovora (Burr.) Winslow et al., the cause of Fire blight of Roseaceae, in areas designated as fire blight free buffer zones
7. Erwinia chrysanthemi pv. dianthicola (Hellmers) Dickey — Slow wilt of carnation
8. Xanthomonas campestris pv. vesicatoria (Diodge) Dye — Tomato bacterial spot
9. Didymella ligulicola (Baker, Dimock and Davis) V. Arx (syn. Mycosphaerella ligulicola Baker et al.) — Chrysanthemum ray blight
10. Phialophora cinerescens (Wollenweber) Van Beyma — a carnation wilt
11. Puccinia horiana P. Henn — Chrysanthemum white rust
12. Verticillium albo-atrum Reinke and Berth. — Verticillium wilt disease
13. Verticillium dahliae Klebahn — Verticillium wilt of hops
14. Arabis mosaic virus
15. Chrysanthemum stunt viroid
16. Plum pox virus
17. Raspberry ringspot virus
18. Strawberry crinkle virus
19. Strawberry latent ringspot virus
20. Strawberry mild yellow edge virus
21. Tomato black ring virus
22. Tomato spotted wilt virus