Abstract

BIOLOGICAL CONTROL OF PENICILLIUM EXPANSUM DURING STORAGE OF PEARS USING SOME MICROORGANISMS

Ramesh Baviskar* and Sanjay Marathe

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Abstract

Total sixteen microorganisms were tested antagonistically to fludioxonil resistant (Pe-EMS-11) of Penicillium expansum (blue mold of pear) when tested individually and in mixture with fludioxonil fungicide. In vitro Bacillus subtilis gave higher inhibition zone (29.20) and others also inhibited the growth of Penicillium expansum. In vivo the culture filtrates of sixteen microorganisms were tested individually and in mixture with fludioxonil resistant (Pe-EMS-11) of Penicillium expansum. Bacillus subtilis gave significant PCE individually and followed by other microbes PCE ranged from (0.61-65.80) while in mixture with fludioxonil the highest PCE showed Bacillus subtilis and followed by other microbes ranged from (15.05-80.00). In mixture with fludioxonil the PCE increased as compared to individual. Bacillus subtilis, Pseudomonas fluorescens, and Trichoderma harzianum, T. viride have more effective for the controlling of Penicillium expansum.

Keywords: Pear, blue mold, fludioxonil, Penicillium expansum, biocontrol agents.