Agriculture Reference
In-Depth Information
9c
9d
Plate 9.
Fungal disease symptoms on onion bulbs. (a) Black scleroial masses on the outside of a
bulb infected by Botrytis allii(image kindly provided by Warwick HRI, Wellesbourne, UK
©
).
(b) Internal rot caused by neck rot, Botrytis allii, infection on onion bulbs (image kindly provided by
Bejo Zaden B.V., Warmenhuizen, The Netherlands
©
). (c) Black mould on outer fleshy scales of bulb
caused by Aspergillus niger(image kindly provided by Bejo Zaden B.V., Warmenhuizen,
The Netherlands
©
). (d) Onion smudge, Colletotrichum circinans, on outer scales of onion showing
