Bulletin of the National Research Centre

Table 4 Inhibitory activity of the crude cultural filtrates of biocontrol agents against Pectobacterium carotovorum subsp. Carotovorum strains, when artificially inoculated on potato tuber slices, in vivo tests

From: Biological control of Pectobacterium carotovorum subsp. carotovorum, the causal agent of bacterial soft rot in vegetables, in vitro and in vivo tests

Biocontrol agents	Soft rot symptoms
	2 h. before inoculation			At the same time			2 h. after inoculation
	Pcc₃	Pcc₄	Pcc₅	Pcc₃	Pcc₄	Pcc₅	Pcc₃	Pcc₄	Pcc₅
Bacterial agents
Bacillus subtilis	+ + ^*	+ + +	+ + +	+ + +	+ + +	+ + +	+ + +	+ + +	+ + +
Bacillus pumilus	-	-	+ + +	+ + +	-	+ + +	-	+ + +	+ + +
Bacillus megaterium	-	-	+ + +	-	-	+ + +	+ + +	-	+ + +
Pseudomonas fluorescens	-	-	-	-	-	+ + +	-	+ +	+ + +
Fungal agents
Trichoderma harzianum	+ + +	-	-	-	-	+ + +	-	-	+ + +
Trichoderma viride	+ + +	-	+ + +	+ + +	-	-	-	-	+ + +
Trichoderma virens	+ + +	+ + +	-	+ + +	-	-	-	-	+ +
Pathogen only
P. c. subsp. carotovorum only	+ + +	+ + +	+ + +	+ + +	+ + +	+ + +	+ + +	+ + +	+ + +
Untreated control
Water only	–	–	–	–	–	–	–	–	-

*-No rotting
+ Restricted rot < 1 cm
+ + Small active rot 1-2 cm
+ + + Highly active rot > 2 cm

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