Salicylic acid concentration used (mM)
Fungitested 0 1 5 10 25 Average per fungus testeda*
FOL 4.47 3.62 2.95 2.88 0 2.78 ab
FORL 4.78 3.68 3.13 2.23 0 2.77 ab
F.  solani 4.85 3.33 3.05 2.45 0 2.74 ab
VD 3.28 3.05 2.68 0 0 1.80 d
C. coccodes 4.30 4.03 3.88 0 0 2.44 bc
R. solani 4.82 4.72 3.63 0 0 2.63 abc
S. sclerotiorum 4.97 4.18 0 0 0 1.83 d
P. aphanidermatum 4.40 3.47 0 0 0 1.57 d
B. cinerea 4.67 4.58 3.03 2.38 0 2.93 a
A. solani 4.30 3.40 2.40 1.57 0 2.33 c
Average per salicylic acid concentrationb* 4.48 a 3.81 b 2.48 c 1.15 d 0.00 e  
LSD (Fungalpathogens xSA concentrations) = 0.631 cm at P≤0.05.
aMean mycelial growth per fungal pathogen for allsalicylic acid concentrations combined.
b Mean mycelial growth per salicylic acid concentration for all fungal pathogens combined.
* For fungal pathogens and salicylic acid concentrations tested, values (means) followed by the same letter are not significantly different according to Duncan's Multiple Range test at P ≤0.05.
Pathogens were cultured on PDA medium and incubated at 25°C for 1 d (P. aphanidermatum), 2 d (R. solaniand S. sclerotiorum), 3 d (B. cinerea, FOL, FORL and F. solani), 4 d (A. solani and C. coccodes) and 7 d (VD).
Table 3: Effect of different salicylic acid concentrations on the in vitro mycelial growth of tomato fungal pathogens cultured on PDA medium at 25°C.