Phytopathological and biochemical impacts of Trichoderma harzianum and certain plant resistance inducers on faba bean root rot disease

Egyptian Journal of Biological Pest Control

Table 1 The influence of Trichoderma harzianum, salts and oxidants on faba bean root rot disease incidence

Treatment (2% w:v)	Root rot incidence %
Treatment (2% w:v)	Pre-emergence	Reduction^*	Post-emergence	Reduction^*
Disodium phosphate	8.3e	78.3e	0.0c	100.0c
Calcium sulfate	6.7e	82.5e	0.0c	100.0c
Potassium metabisulfite	11.7d	69.5d	0.0c	100.0c
Sodium sulfate	11.7d	69.5d	0.0c	100.0c
Cysteine	21.7b	43.3b	0.0c	100.0c
Potash alum	13.3 cd	65.3 cd	0.0c	100.0c
Cysteine + potash alum	8.3e	78.3e	0.0c	100.0c
Cysteine + Trichoderma harzianum	6.7e	82.5e	0.0c	100.0c
Potash alum + T. harzianum	13.3 cd	65.3 cd	0.0c	100.0c
Cysteine + potash alum + T. harzianum	8.3e	78.3e	0.0c	100.0c
Enervit	5.0e	86.9e	0.0c	100.0c
Selenium	11.7d	69.5d	0.0c	100.0c
Vitamin E	11.7d	69.5d	0.0c	100.0c
Vitamin C	13.3 cd	65.3 cd	0.0c	100.0c
Vitamax plus	23.3b	39.2b	2.2b	91.7b
Trichoderma harzianum + enervit	16.7c	56.4c	0.0c	100.0c
T. harzianum + selenium	20.0b	47.8b	0.0c	100.0c
T. harzianum + vitamin E	8.3e	78.3e	0.0c	100.0c
T. harzianum + vitamin C	13.3 cd	65.3 cd	0.0c	100.0c
T. harzianum + vitamax plus	16.7c	56.4c	0.0c	100.0c
Vitamin E + vitamin C + enervit + selenium + vitamax plus	15.0c	60.8c	0.0c	100.0c
T. harzianum + vitamin E + vitamin C + enervit + selenium + vitamax plus	13.3 cd	65.3 cd	0.0c	100.0c
Trichoderma harzianum (10⁸ spores/ml)	20.0b	47.8b	0.0c	100.0c
Rizolex-T (50WP) (1 gm/l)	35.0a	8.6a	21.6a	18.8a
Untreated control	38.3a	–	26.6a	–

Mean values within columns followed by the same letter are not significantly different at P ≤ 0.05
\({\text{Reduction }}\% \, = \frac{{{\text{Untreated}}\;{\text{control }}{-}{\text{ treatment}}}}{{{\text{Untreated}}\;{\text{control}}}} \times 100\)