Agriculture Reference
In-Depth Information
3b
3c
Plate 3.
Pest damage on onions. (a) Thrips, Thrips tabaci, damage where leaf blades emerge from
the neck of an onion plant, showing the silvering of the leaf as a result of thrips puncturing cells and
feeding on the contents (image kindly provided by De Groot en Slot B.V., Broek op Langedijk, The
Netherlands
©
). (b) Damage to young onions caused by subsoil feeding along the plant row by onion
fly larvae, Delia antiqua(image kindly provided by De Groot en Slot B.V., Broek op Langedijk, The
Netherlands
©
). (c) Onion fly, Delia antiqua, damage to an onion bulb. A whitish larva can be seen
