Applications of plant growth promoting bacteria and Trichoderma spp. for controlling Orobanche crenata in faba bean

Bulletin of the National Research Centre

Table 2 Effects of plant growth-promoting bacteria and Trichoderma species on O. crenata growth parameters in faba bean under greenhouse conditions (Experiment II)

Treatments	Averages of O. crenata growth parameters
	Numbers		Fresh weight		Dry weight		Length
	No./plant	Red.%	g./plant	Red.%	g./plant	Red.%	cm	Red.%
Two months
Orobanche alone (Orob.)	4.4^a*	–	0.54^a	–	0.07^a	–	ND	ND
Orob. + glyphosate alone	1.9^bc	57	0.32^bc	41	0.03^b	57	ND	ND
Orob. + nutrient broth medium	3.6^ab	18	0.53^a	2	0.07^a	0	ND	ND
Orob. + P. fluorescens	1.1^c	75	0.42^ab	22	0.05^ab	29	ND	ND
Orob. + B. subtilis	1.6^c	64	0.29^bc	46	0.03^b	57	ND	ND
Orob. + B. pumilus	1.6^c	64	0.21^c	61	0.03^b	57	ND	ND
Orob. + malt extract medium	3.9^a	11	0.53^a	2	0.07^a	0	ND	ND
Orob. + T. harzianum	0.8^c	82	0.39^ab	28	0.05^ab	29	ND	ND
Orob. + T. viride	1.8^bc	59	0.40^ab	26	0.05^ab	29	ND	ND
Orob. + T. vierns	1.0c	77	0.34^bc	37	0.04^b	43	ND	ND
Four months
Orobanche alone (Orob.)	35.4^a	–	2.25^a	–	0.27^a	–	8.88^a	–
Orob. + glyphosate alone	12.5^b	68	0.78^c	65	0.09^c	67	4.50^cd	49
Orob. + nutrient broth medium	33.0^a	7	1.93^a	14	0.22^ab	19	7.25^ab	18
Orob. + P. fluorescens	14.3^b	60	1.07^bc	52	0.13^c	52	5.38^bcd	39
Orob. + B. subtilis	17.8^b	50	1.02^bc	55	0.13^c	52	4.25^d	52
Orob. + B. pumilus	20.1^b	43	1.34^b	40	0.16^bc	41	5.50^bcd	38
Orob. + malt extract medium	34.0^a	4	2.00^a	11	0.20^b	26	7.75^abc	13
Orob. + T. harzianum	18.4^b	48	1.29^bc	43	0.15^bc	44	5.13^bcd	42
Orob. + T. viride	22.1^b	38	0.90^bc	60	0.11^c	59	4.56^cd	49
Orob. + T. vierns	17.3^b	51	1.29^bc	43	0.16^bc	41	5.63^bcd	37

*In each column (for each month) followed by the same small letter are not significantly different according to Duncan’s multiple range test (p = 0.05)