A Comparison of Disinfectants to Prevent Spread of Potyviruses in Greenhouse Tomato Production

Fig. 1. Comparison of PVY infection of tomato between serial and direct inoculation methods and among treatments of pruning tools with either sodium hypochlorite solutions (bleach) or quaternary ammonium solutions. DI = Direct Inoculation (blade passed through PVY solution immediately prior to cutting the stem of each tomato plant); SI = Serial Inoculation (blade passed through PVY solution immediately prior to cutting the stem of the first tomato plant, but then used to cut the next 7 plants without exposure to any additional inoculum); Treatments 1 through 6 (T1-T6) were performed using the direct inoculation method, with blade dipped in inoculum, then virucide, before cutting stem of plant.
T1 = blade dipped 2 seconds in 10% sodium hypochlorite (bleach);
T2 = blade dipped 15 seconds in 0.5% sodium hypochlorite;
T3 = blade dipped 15 seconds in 0.75% sodium hypochlorite;
T4 = blade dipped 2 seconds in 1% quaternary ammonium solution;
T5 = blade dipped 15 seconds in 1% quaternary ammonium solution;
T6 = blade dipped 15 seconds in 3% quaternary ammonium solution.
Means with the same letter are not significantly different (P < 0.05) based on analysis of least square means using the Tukey-Kramer method.



Image from Plant Health Progress article:
A Comparison of Disinfectants to Prevent Spread of Potyviruses in Greenhouse Tomato Production