Description:A bacterial disease of Peas. Plants from infected seed develop water soaked spots on the stems near ground level that become purplish brown with age. Stems may be thin and shrivelled. Bacteria from these lesion infect leaves of other plants. The lesion tends to fan out from the base of the leaflet or may be on the edges. Initially they have a water soaked appearance and change to yellow then brown and then the tissue dies and becomes grey brown and papery. On pods the lesion usually appear on the edges and as dark green water soaked areas that that soon become dark brown patches. Infected young pods often shrivel. A cream coloured, slimy substance is sometimes produced from the lesions in wet conditions. Small black seed remnants or shrivelled seed may occur depending on the time of infection.
Species Affected:Peas, Sweet Pea and some other Pisum species.
Biology:Infects plants through wounds and stomata.
Life Cycle:Origin and History:
Management and Control:Use healthy seed. Harvest seed early and from the cleanest part of the paddock.
Related and Similar Species:References:
Acknowledgments:Collated by HerbiGuide. Phone 08 98444064 for more information.