Tuesday, 21 October 2014

Pea Leaf Spot - Asccochyta pisi and Mycosphaerella pinodes



Ascochyta pisi and Mycosphaerella pinodes are fungal diseases of pea plants. 


Also known as black spot, and causes leaf, stem and pod blight of peas, especially snow peas.

Fungal spores can be carried by wind, or on infected seed and may even survive for years in the soil.

Severe infections may rot stems and cause plant death. Ascochyta pisi has a distinct dark margin, and Mycosphaerella pinodes a fuzzy one.

Prevention:
Rotate crops, grow your peas from seed and plant in sunny, well-drained position.

Treatment:
Copper ammonium and copper hydroxide. If stem rot occurs, don't treat, just pull the plant out and dispose of it in the bin.


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