Susceptible
varieties of spring wheat are showing high levels of infection from stripe rust
if they are not protected by fungicides. High levels are showing in Klasic, for
example, from the Aberdeen area through Idaho Falls.
Some
formerly resistant varieties are showing low levels of stripe rust as well.
There is heavy disease pressure in southeast Idaho. As spring wheat is starting
to head, please be aware that strobilurin fungicides should not be used
to control stripe rust due to the potential for increased DON levels from
Fusarium head blight. Choose a fungicide that will be effective for both stripe
rust control and FHB suppression and if possible, target application window for
FHB suppression.
Read
and follow all label directions.
Stripe
rust is also being found in winter and spring barley. We are not recommending
fungicide applications for stripe rust in barley at this time, but similar to
wheat, fungicide applications to suppress FHB will also protect against stripe
rust infection. In general, six row barleys are more susceptible than two row
barleys.
For more information or help:
No comments:
Post a Comment