Enhanced control of postharvest citrus fruit decay by means of the combined use of compatible biocontrol agents

•Pseudomonas and Trichoderma strains have a biocontrol activity against Penicillium digitatum.•Combined use of biocontrol agents increases efficacy of biocontrol strategy.•Synergistic effects of the mixtures are evidenced in in vivo conditions.•Synergistic and antagonistic interactions in the mixture must be considered.