Abstract
Control of disease in seedlings was obtained by treating cucumber [Cucumis sativus]seeds for 20 min in aqueous preparations (50.degree. C) of calcium propionate or tartaric acid, each at 33 g/l, or with acidic cupric acetate at 50 g/l. Seeds had been vacuum-inoculated with Pseudomonas syringae pv. lachrymans. Seed germination was not affected by chemical-heat treatments. Tests were conducted in the growth room and in the field. Disease control was obtained in growth room tests when inoculated seeds were treated 20 min with cupric acetate in 95% ethanol at 50.degree. C.