Ascochyta blight of field pea is a disease complex caused by three closely related fungi; Ascochyta Mycosphaerella pinodes, A. pinodella and A. pisi. The disease complex is usually most severe in growing seasons with high rainfall. Yield losses in field peas of up to 80 have been reported due to A. pinodes. Ascochyta infected seeds usually have low germination and poor emergence.

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