Pre- and postharvest treatment with alternatives to synthetic fungicides to control postharvest decay of sweet cherry |
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| Institution: | 1. Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy;2. Department of Agricultural, Food and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy;1. Department of Horticulture, Oregon State University, Mid-Columbia Agricultural Research and Extension Center, 3005 Experiment Station Dr., Hood River, OR 97031, United States;2. Oregon State University Extension, The Dalles, OR 97058, United States;1. Süleyman Demirel University, Faculty of Agriculture, Department of Horticulture, 32200, Isparta, Turkey;2. Gaziosmanpaşa University, Faculty of Agriculture, Department of Horticulture, 60240, Tokat, Turkey;3. Ordu University, Faculty of Agriculture, Department of Horticulture, 52200, Ordu, Turkey;1. School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China;2. Department of Food Science & Technology, Faculty of Agriculture, Food and Consumer Sciences, University for Development Studies, Tamale, Ghana;3. Indigenous Knowledge and Heritage Center at Ghibaish College of Science & Technology in Ghibaish, Sudan;4. College of Sciences and Arts-Alkamil, University of Jeddah, Alkamil, P.O. Box 110, Saudi Arabia;5. Department of Crop Production, Faculty of Agriculture, Red Sea University, Port Sudan, Sudan;1. U.S. Department of Agriculture—Agricultural Research Service (USDA-ARS), 2217 Wiltshire Road, Kearneysville, WV 25430, United States;2. Department of Postharvest Science of Fresh Produce ARO, The Volcani Center P.O. Box 6, Bet Dagan 50250, Israel;3. School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China;4. Dipartimento di Agraria, Università Mediterranea di Reggio Calabria, Località Feo di Vito, 89124 Reggio Calabria, Italy |
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| Abstract: | The effectiveness of alternatives to synthetic fungicides for the control of pathogens causing postharvest diseases of sweet cherry was tested in vitro and in vivo. When amended to potato dextrose-agar, oligosaccharides, benzothiadiazole, chitosan, calcium plus organic acids, and nettle macerate reduced the growth of Monilinia laxa, Botrytis cinerea and Rhizopus stolonifer. Treatment of sweet cherries three days before harvest or soon after harvest with oligosaccharides, benzothiadiazole, chitosan, calcium plus organic acids, nettle extract, fir extract, laminarin, or potassium bicarbonate reduced brown rot, gray mold, Rhizopus rot, Alternaria rot, blue mold and green rot of cherries kept 10 d at 20 ± 1 °C, or 14 d at 0.5 ± 1 °C and then exposed to 7 d of shelf-life at 20 ± 1 °C. Among these resistance inducers, when applied either preharvest or postharvest, chitosan was one of the most effective in reducing storage decay of sweet cherry, and its antimicrobial activity in vitro and in field trials was comparable to that of the fungicide fenhexamid. Benzothiadiazole was more effective when applied postharvest than with preharvest spraying. These resistance inducers could represent good options for organic growers and food companies, or they can complement the use of synthetic fungicides in an integrated disease management strategy. |
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