Folia Horticulturae

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Effect of increasing concentrations of CO2 in controlled atmosphere storage on the development of physiological disorders and fungal diseases in plums (Prunus domestica L.)

Jan Ben*, Maria Gawęda**

**Department of Pomology
**Institute of Vegetables and Ornamental Plants
**Agricultural University
**29 Listopada 54, 31-425 Kraków, Poland

During 2 years of storage of Węgierka Zwykła (Prunus domestica L.) plums in controlled atmosphere (CA) the degree of internal breakdown in the fruit and the incidence of fungal diseases were determined at 2-week intervals. It was found that both the vegetation period and the method of storage strongly affected the conditions of the plums. The composition of gases applied significantly limited the development of internal breakdown and fungal diseases as compared with cold storage conditions (CS, at 0°C). Carbon dioxide in concentrations of 3 and 5% with a 3% oxygen content equally affected the number of infected fruits during 10 weeks of storage. An increase in CO2 content to 15% delayed the appearence of internal breakdown by 2 weeks and decreased the number of plums with signs of breakdown and fungal diseases found at the last stage of storage life.

Ben J., Gawęda M., 1992. Effect of increasing concentrations of CO2 in controlled atmosphere storage on the development of physiological disorders and fungal diseases in plums (Prunus domestica L.). Folia Horticulturae IV/2: 87-100.