Agriculture Reference
In-Depth Information
8b
8c
Plate 8.
Soil-borne disease infection of roots and stem bases. (a) White rot, Sclerotium
cepivorum, attack on stem bases of salad onions showing white mycelial masses and patches of
black sclerotia (image kindly provided by Warwick HRI, Wellesbourne, UK
©
). (b) Pink root,
Pyrenochaeta terrestris, symptoms on onion (image kindly provided by Bejo Zaden B.V.,
Warmenhuizen, The Netherlands
©
). (c) Onion stem bases infected by Fusarium basal rot, Fusarium
oxysporumf.sp. cepae(image kindly provided by De Groot en Slot B.V., Broek op Langedijk, The
