Stripe rust turning up in Louisiana wheat plots

Stephen Harrison, Louisiana State University small grains breeder, sent out the following advisory today:

Dr. Boyd Padgett (LSU AgCenter plant pathologist) visited the variety trial location in Alexandria, LA this morning.

Boyd reports that there is stripe rust present at low levels in the variety trials and noted that he observed stripe rust on AGS 2000.

AGS 2000 has some stripe rust resistance but is quite susceptible to some races. It had 80% stripe rust at Winnsboro in 2005, the last year stripe rust was a major problem. This may indicate that a virulent race is present in the state (or may not). Our stripe rust epidemics usually develop the first half of March and peak by early April when temperatures surpass the optimum for stripe rust development. Growers, consultants and agents should scout wheat fields for the presence of stripe rust and be prepared to apply fungicides if warranted.

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