Biocontrol agents are commonly isolated from sources such as soil [6] and compost [7]. Aerobic and anaerobic composts previously attracted wide attention for their disease-suppressive effect as well as for their rich biota of bacteria (phyla Actinobacteria, Bacteroidetes, Firmicutes, Proteobacteria and Deinococcus-Thermus) with biocontrol possibilities [8] and [9]. Biological control measures employing antagonistic microorganisms against pathogens and pests have been previously reported to represent an eco-friendly approach for numerous agricultural crops [10]