As with the other Nordics, the disease situation is slightly different because this is the northernmost cereal cultivation area in the world. In 2009 the worst pathogens were: on barley, the fungal leaf spots (
Drechslera teres,
Cochliobolus sativus,
Rhynchosporium secalis), and possibly
Fusarium langsethiae and
Ramularia collo-cygni in the future; on
spring wheat, the
leaf blotch diseases; on
oat,
Pyrenophora chaetomioides,
Phaeosphaeria avenaria,
C. sativus, and possibly
F. langsethiae in the future; rarely
powdery mildew and
yellow rust. The benefit of
fungicide is 11% in barley and 13% in spring wheat. Fungicides are used by 73% of cereal farmers.
Monographella nivalis and
Puccinia recondita routinely plague
winter rye. Native
cultivars are usually more well suited to the native
disease and abiotic environment (with the exception of one variety and one disease). Late-sowing is the better disease management strategy in Finland.
Puccinia triticina (
wheat leaf rust) commonly appears late in the wheat season. Severe losses are rare but do occur with a combination of susceptible cultivars, mild winter, and further favorable weather through the rest of the season. The most common
resistance gene deployed between 1992 and 2002 was
Lr10 at 20.0% (less popular were
Lr14a and
Lr26). The most popular cultivars were: for spring wheat, 'Tjalve' (no
Lrs), 'Mahti' (
Lr10), 'Vinjett' (
Lr14a), 'Kruunu' (
Lr10), 'Bastian' (none), 'Zebra' (
Lr14a), 'Manu' (unknown) and 'Anniina' (unknown); and for winter wheat, 'Tryggve' (unknown), 'Urho' (unknown), 'Tarso' (Lr26+other unknown), 'Aura' (unknown), 'Ilves' (none), 'Gunbo' and 'Ramiro'. 20% of cultivars had no noticeable resistance. The existing leaf rust virulence pattern likely reflects selection by the
Lrs that have been deployed up to now. == See also ==