Practice Abstract 38 - Stem and bulb nematode – host range and field management

Short title (native language): 
Stem and bulb nematode – host range and field management

Short summary for practitioners (native language): 
Ditylenchus gigas
Thought to be the main species affecting UK field beans, it causes significant crop damage but has a limited host range that includes the following:
Vicia faba, Lens culinaris, Vicia and Lathyrus spp., Pisum sativum, Allium spp., Ranunculus arvensis, Convolvulus arvensis, Lamium album, Lamium purpureum, Lamium amplexicaule, Avena sterilis (Stawniak, 2011)
Avoidance of beans in the same rotation as these species will help to reduce the chances of rapid build-up of D. gigas.
Ditylenchus dipsaci
Thought to be the less common species affecting field UK beans, D. dipsaci has many plant hosts, including Alliums, Brassicas, bulb flowers, field and broad beans, oats, sugar beet, hemp, strawberries, lucerne, tobacco, Phaseolus beans, phlox, peas, rye, potatoes, clover, maize and some weeds. As such, management of rotations is more difficult, although some crops in the rotation may be treated with nematicides, reducing populations overall. A list of species can be found at https://www.cabi.org/isc/datasheet/19287.