Stripe Blight of Oats

Pseudomonas syringae pv. striafaciens

Description:

Light green, water soaked spots appear initially and enlarge to brown stripes often with a thin yellow edge on leaves and sheaths. As the disease progresses, the stripes merge into brown irregularly shaped blotches. The leaves may wither and die, starting from the tip. When stripes form on the boot the florets inside may be stained and rotten. Emerged florets may be mottled brown to white and sterile.

Species Affected:

Oats.

Biology:

Survives on crop residues and seed.
Spread by raindrop splash, direct contact and aphids or other insects.
Moist weather favours disease spread and warm dry weather stops spread.

Life Cycle:

Origin and History:

Distribution:

Significance:

Management and Control:

Plant resistant varieties.
Plant clean seed.
Avoid planting into Oat stubble.

Related and Similar Species:

References:

1293

Acknowledgments:

Collated by HerbiGuide. Phone 08 98444064 or www.HerbiGuide.com.au for more information.