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Development of a 15-day Interval Spraying Program for Controlling Major Apple Diseases

  • Lee, Dong-Hyuck (Apple Experiment Station, National Horticultural Research Institute) ;
  • Kim, Dae-Hee (School of Applied Biology and Chemistry, Kyungpook National University) ;
  • Shin, Ho-Cheol (Central Research Institute, Kyung Nong Co. Ltd.) ;
  • Uhm, Jae-Youl (School of Applied Biology and Chemistry, Kyungpook National University)
  • Published : 2008.12.01

Abstract

A fungicidal spray program for effective control of three major apple diseases in Korea (white rot, bitter rot, and Marssonina blotch) was developed. This was based on our previous studies showing that application of ergosterol biosynthesis inhibitors (EBIs) in early or mid-August can eradicate white rot infection in fruit and that some protective fungicides show after-infection activity against white rot. The basic spray program focused on control of white rot, the main target disease, and the fungicides were sprayed at 15-day intervals from petal fall to late August using fungicides that show after-infection and EBI activity. The basic spray program was modified over 4 successive years to improve control efficacy against bitter rot and Marssonina blotch, which sometimes cause as much damage as white rot. Modifications to the regime were made every year by replacing one fungicide in the basic program at a specific spraying time. Substitution of only one fungicide in the spray program, even early in the growing season, greatly influenced the final disease incidence at harvest. Applying this principle, a moderately efficient spray program for cv. Fuji that increased the spray interval from 10 to 15 days and thus reduced the number of sprays required per crop season was developed.

Keywords

References

  1. Hayashi, S. 1984. Epidemiology and control of apple ring rot. Plant Protect. 38:553-556 (in Japanese)
  2. Ijima, A. 1999. Epidemiology and control of apple bitter rot. Plant Protect. 53:253-256 (in Japanese)
  3. Kim, D. H. 2000. Ecology and chemical control of apple white rot. Ph.D. dissertation. Kyungpook National University, Daegu, Korea
  4. Kim, D. H. and Uhm, J. Y. 2002. Effect of application timing of ergosterol biosynthesis-inhibiting fungicides on the suppression of disease and latent infection of apple white rot caused by Botryosphaeria dothidea. J. Gen. Plant Pathol. 68:237-245 https://doi.org/10.1007/PL00013082
  5. Kim, K. W., Park, E. W., Kim, S. B. and Yun, J. L. 1995. Temporal dynamics of Botryosphaeria dothidea spore dispersal in apple orchards related climatological factors. Korean J. Plant Pathol. 11:230-237 (in Korean with English abstract)
  6. KSPP (Korean Society of Plant Pathology). 2004. List of Plant Diseases in Korea, 4th ed., pp. 353-361
  7. Lee, D. H., Lee, S. W., Choi, K. H., Kim, D. A. and Uhm, J. Y. 2006. Survey on the occurrence of apple diseases in Korea from 1992 to 2000 . Plant Pathol. J. 22:375-380 https://doi.org/10.5423/PPJ.2006.22.4.375
  8. Lee, D. H., Kim, D. H., Woo, H. and Uhm, J. Y. 2007. After-infection activities of protective fungicides against apple white rot. Plant Pathol. J. 23:166-173 https://doi.org/10.5423/PPJ.2007.23.3.166
  9. Ogata, T. 1997. Environmental and cultural factors affecting the occurrence cycle of Botryosphaeria fruit rot of apple, and its control measures. Plant Protect. 51:11-14 (in Japanese)
  10. Sutton, T. B. 1981. Production and dispersal of conidia of Physalospora obtusa and Botryosphaeria dothidea in apple orchards. Phytopathology 71:584-589 https://doi.org/10.1094/Phyto-71-584
  11. Uhm, J. Y. 1998. Current practice of chemical control against apple diseases and its improvement in Korea. In: Proceedings of the International Symposium on Recent Technology of Chemical Control of Plant Diseases, pp. 19-49. Korean Society of Plant Pathology, Daegu, Korea
  12. Uhm, J. Y. 2005. Protocol for chemical control of apple diseases and fungicidal spray programs in 2005. In: Effective control of apple diseases with reduced use of chemicals, pp. 7-9. Apple Research Institute, Kyungpook National University, Daegu, Korea

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