Blackstem and Leaf Spot of Clover, Lucerne, Medic

Phoma medicaginis

Description:

Species Affected:

Clover, Lucerne, Medic, Peas.

Biology:

Life Cycle:

Origin and History:

Distribution:

Significance:

Management and Control:

Clover

Plant resistant varieties. See Disease Susceptibility of Clover Varieties.

Pea

Use healthy seed.
Do a PreDicta B soil test which is available from SARDI Root Disease Testing Service.
Treat seed with fungicide containing thiram.
Delay planting to a cooler period of the year e.g. Late June rather than May to early June.
Don't plant Peas on areas that have had Peas in the last 3 years or within 500 m of Peas from the previous season.
Plant in well-drained areas. Avoid over watering
Destroy infected crop residues.
Fungicide programs have generally not been very successful.

Related and Similar Species:

References:

Acknowledgments:

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