The Period of Susceptibility of Red Beet to Streptomyces Scab

SUMMARY Red beet growing in pots, either out-of-doors in Hertforoshire or in the glasshouse, was inoculated with a pathogenic Streptomyces isolate. The Plants which become susecptible at decortication (about five weeks after sowing), became resistant after about a further two weeks. This allows a relatively short period during which a potential control measure would need to be effective.