Potato Research

, Volume 32, Issue 1, pp 91–99 | Cite as

Factors influencing the control of potato gangrene by fungicide treatment

  • G. A. Hide
  • G. R. Cayley
Article

Summary

Potato tubers inoculated withPhoma exigua var.foveata were dipped or sprayed with fungicide immediately after wounding or after holding them at 5 or 15°C for up to 14 days. Thiabendazole and 2-aminobutane, either separately or combined, controlled gangrene when applied soon after wounding: on tubers with little inoculum, application in 2 litres t1 was better than in 400 ml t−1. When treatment was delayed, 2-aminobutane or the mixture was more effective than thiabendazole alone. Adsorption of thiabendazole onto soil increased with decreasing soil pH and the fungicide gave better control of disease on tubers carrying neutral than acid soil. Treating tubers with dichlorophen increased gangrene.

Additional key words

thiabendazole 2-aminobutane soil adsorption soil pH dichlorophen inoculum level 

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References

  1. Adams, M. J., 1980. The significance of tuber damage and inoculum concentration ofPhoma exigua var.foveata in the development of gangrene in stored potato tubers.Annals of Applied Biology 95: 31–40.Google Scholar
  2. Austin, D. J. & G. G. Briggs, 1976. A new extraction method for benomyl residues in soil and its application in movement and persistence studies.Pesticide Science 7: 201–210.Google Scholar
  3. Bolton, J., 1971. Long-term liming experiments at Rothamsted and Woburn.Rothamsted Experimental Station Report for 1970, part 2, pp. 98–110.Google Scholar
  4. Briggs, G. G., 1981. Relationships between chemical structure and the behaviour and fate of pesticides.Proceedings 1981 British Crop Protection Conference — Pests and Diseases 3: 701–710.Google Scholar
  5. Cayley, G. R., G. A. Hide, R. J. Lewthwaite, B. J. Pye & P. J. Vojvodic, 1987. Methods of applying fungicide sprays to potato tubers and description and use of a prototype electrostatic sprayer.Potato Research 30: 301–317.Google Scholar
  6. Cayley, G. R., G. A. Hide, K. A. Lord, D. J. Austin & A. R. Davies, 1979. Control of potato storage diseases with formulations of thiabendazole.Potato Research 22: 177–190.Google Scholar
  7. Cayley, G. R. & K. A. Lord, 1980. The extraction and assay of thiabendazole in strong adsorbing soils.Pesticide Science 11: 9–14.Google Scholar
  8. Harris, R. I. 1981. The interaction between bactericidal chemicals and the wound healing process of potato tuber tissue.Pesticide Science 12: 443–448.Google Scholar
  9. Hide, G. A. & G. R. Cayley, 1982a. Methods of testing fungicides for controlling skin spot (Polyscytalum pustulans) on potatoes during storage.Potato Research 25: 89–97.CrossRefGoogle Scholar
  10. Hide, G. A. & G. R. Cayley, 1982b. Chemical techniques for control of stem canker and black scurf (Rhizoctonia solani) disease of potatoes.Annals of Applied Biology 100: 105–116.Google Scholar
  11. Hide, G. A. & G. R. Cayley, 1983. Effects of delaying fungicide treatment on the incidence of gangrene in stored potato tubers.Annals of Applied Biology 102: 107–115.Google Scholar
  12. Hide, G. A., R. L. Griffith & M. J. Adams, 1977. Methods of measuring the prevalence ofPhoma exigua on potatoes and in soil.Annals of Applied Biology 87: 7–15.Google Scholar
  13. Kalembasa, S. J. & D. S. Jenkinson, 1973. A comparative study of titrimetric and gravimetric methods for the determination of organic carbon in soils.Journal of the Science of Food and Agriculture 24: 1085–1090.Google Scholar
  14. Malone, J., 1986. Interaction of the fungicide 2-aminobutane with potato tubers. PhD thesis, University of Edinburgh.Google Scholar
  15. Scudamore, K. A., 1980. Determination of 2-aminobutane in potatoes by high-performance liquid chromatography.Analyst 105: 1171–1175.CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • G. A. Hide
    • 1
  • G. R. Cayley
    • 1
  1. 1.Wellcome Research LaboratoriesBerkhamstedUK

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