Table 1: Effect of Hypovirulent Binucleate Rhizoctonia (HBNR) with various pre-incubation times on the reduction of lesion development of Fusarium Crown and Root Rot (FCRR) of tomato caused by Fusarium Oxysporum f.sp. Radicis Lycopersici (FORL) in water agar a.

Treatments Lesion Development (cm)b
3 cmc 6 cm
-12d 0 12 24 -12 0 12 24
Pathogen 7.2 be 7.0 b 6.7 b 7.0 b 6.4 b 6.1 b 5.6 b 6.1 b
HBNR W1 0.8 a 0.8 a 0.7 a 0.5 a 2.2 a 1.8 a 1.6 a 1.1 a
HBNR Rhv7 1.4 a 0.7 a 0.6 a 0.7 a 2.6 a 2.2 a 1.6 a 1.6 a

a Eight-day-old tomato seedlings were grown in 2% water agar treated with HBNR and challenge-inoculated with FORL. b Lesion development was recorded 8 days after inoculation with FORL. c Inoculation points of FORL were 3 cm and 6 cm away from HBNR position. d Pre-incubation of HBNR on neck root: 12 h after inoculation of pathogen (-12); simultaneous inoculation of HBNR and pathogen (0 h); 12 h before inoculation of pathogen (12); 24 h before inoculation of pathogen (24). e Mean of four replications with five seedlings per replication. Values followed by the same letter do not differ significantly (P > 0.05) according to Fisher’s least significant difference test.

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