Studies on the disinfection of cucumber seeds contaminated with Pseudomonas lachrymans.
Cucumber seeds infected with P. lachrymans were immersed in hot water at 18-58 deg C for 15-60 min, streptomycin or oxytetracyclin, both at 80-100 p.p.m. for 15-60 min, or treated with Bromocet (based on cetylpyridine bromide) at 20-400 p.p.m. Hot water treatment above about 54 deg delayed germination, and subsequent rootlet growth was adversely affected; however, cotyledon infection was reduced or eliminated by the higher temperatures and longer exposure times. Streptomycin gave good disease control at all concentrations, the 15 min immersion being adequate. Oxytetracyclin was less effective, and was phytotoxic at the high [concentrations. Bromocet was an effective bactericide but was phytotoxic at all concentrations.