An investigation was conducted to evaluate the potential of antagonistic cyanobacteria/bacterial cultures
amended compost and compost tea preparations for suppressing diseases caused by plant pathogenic
fungi Fusarium oxysporum, Pythium debaryanum, Pythium aphanidermatum and Rhizoctonia solani in
tomato. Two types of microbe-fortified composts and the compost tea preparations, along with the
recommended biological control (Trichoderma formulation) and chemical control (Thiram-Carbendazim),
were used for inoculating the potting mixture. Comparative performance of the treatments revealed the
superiority of both the composts/compost tea preparations in enhancing seed germination, seedling
length and biomass in the fungi challenged treatments. The most effective control of the diseases was
obtained by the composts amended with Anabaena oscillarioides C12 and Bacillus subtillis B5 and the
compost tea preparations. Both treatments provided significantly better control than the other treatments in terms of reduction in disease severity, reduction of fungal load and enhancement of plant
parameters. Our study reveals the efficacy of microbe-fortified composts for use in control of the studied
root diseases caused by phytopathogenic fungi.