Ascochyta Blight of Lentils

Ascochyta lentis

Names:

Ascochyta Black Spot of Lentils

Description:

A fugal disease of Lentils that appears as black spots on the leaves.

Species Affected:

Lentils.

Biology:

Favoured by moist conditions
Survives on crop residues.
Spread by infected seed, wind and water splash.

Life Cycle:

Origin and History:

Distribution:

Significance:

Management and Control:

Plant Lentils more than 500 m from previous crops.
Plant more resistant varieties.
Rotate crops so there is at least 3 years between Lentil crops.
Use seed from a crop that was not infected. Test seed for the disease.
Treat all seed with P-Pickle T, but note that this may fail if more than 12% of seeds are infected.
Apply all foliar fungicide sprays before rain.
Apply first fungicide spray 3-4 weeks after emergence.
Use higher fungicide rates if the disease is observable.
Use fine nozzles at high pressures (4 bar) delivering at least 80 L/ha spray mix.

Related and Similar Species:

References:

Acknowledgments:

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