Skip to main content
SpringerLink
Log in

Fungicide Field Treatments to Control Potato Leak Caused by Pythium ultimum

  • Published:
American Journal of Potato Research Aims and scope Submit manuscript

Abstract

Potato leak, caused by Pythium ultimum, is characterized by brown to dark-gray lesions on tubers. The efficacy of fungicides applied by foliar spray, in-furrow treatment, or by combination of both methods on disease incidence was evaluated in three field trials. In 2018, a single [50 days after planting (DAP), or 1 week prior to haulm kill (HK)], or two foliar sprays (50 DAP and 1 week pre-HK) of metalaxyl, hymexazol and propamocarb-HCl were evaluated. Disease incidence was significantly reduced only by metalaxyl. In 2019 trials, only metalaxyl treatments were included: a single (50 DAP; 2-weeks pre-HK; 2-days post-HK) or two foliar sprays (50 DAP; 2-weeks pre-HK), in-furrow treatment, alone or combined with foliar spray (2-weeks pre-HK). Disease incidence was significantly reduced by all treatments, except for foliar spray 50 DAP (only in Exp C). The lowest incidence was observed in the in-furrow treatment alone or combined with foliar spray applied 2-weeks before HK.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Al-Mughrabi, K.I., R.D. Peters, H.W. Platt, G. Moreau, A. Vikram, R. Poirier, and I. MacDonald. 2007. In-furrow applications of metalaxyl and phosphite for control of pink rot (Phytophthora erythroseptica) of potato in New Brunswick, Canada. Plant Disease 91: 1305–1309.

    Article  CAS  Google Scholar 

  • Barak, E., L.V. Edgington, and B.D. Ripley. 1984. Bioactivity of the fungicide metalaxyl in potato tubers against some species of Phytophthora, Fusarium, and Alternaria, related to polyphenoloxidase activity. Canadian Journal of Plant Pathology 6 (4): 304–308.

    Article  CAS  Google Scholar 

  • Bruin, C.A., L.V. Edgington, and B.D. Ripley. 1982. Bioactivity of the fungicide metalaxyl in potato tubers after foliar sprays. Canadian Journal of Plant Pathology 4 (4): 353–356.

    Article  CAS  Google Scholar 

  • Fernandez-Northcote, E.N., R.E. Huapaya, and M.H. Torres. 1972. La podredumbre rosada de la papa; busqueda de fuentes de resistencia en tuberculos (Pink rot of potatoes; screening for tuber resistance). Fitopatologia 6: 18–27.

    Google Scholar 

  • Gachango, E., W.W. Kirk, and R. Schafer. 2012. Effects of in-season crop-protection combined with postharvest applied fungicide on suppression of potato storage diseases caused by oomycete pathogens. Crop Protection 41: 42–48.

    Article  CAS  Google Scholar 

  • Hamm, P.B., D.A. Inglis, R. Finn, and G. Olaya. 2004. Resistance to mefenoxam in isolates of Pythium ultimum from potato in Oregon. American Journal of Potato Research 81: 64.

    Google Scholar 

  • Hollingshead, A.K., N.L. Olsen, M. Thornton, J. Miller, D.A. Schisler, and P.J. Siliniger. 2020. Potato cultivar susceptibility to Pythium leak as influenced by harvest and early storage temperatures. American Journal of Potato Research 97: 393–403. https://doi.org/10.1007/s12230-020-09769-1.

    Article  Google Scholar 

  • James, R.V., and W.R. Stevenson. 1999. Evaluation of the effect of foliar fungicides on potato storage quality. Fungicide and Nematicide Tests 54: 180.

    Google Scholar 

  • Johnson, D.A., D.A. Inglis, and J.S. Miller. 2004. Control of potato tuber rots caused by oomycetes with foliar applications of phosphorous acid. Plant Disease 88: 1153–1159.

    Article  CAS  Google Scholar 

  • Kato, S., R. Coe, L. New, and M.W. Dick. 1990. Sensitivities of various oomycetes to hymexazol and metalaxyl. Journal of General Microbiology 136: 2127–2134.

    Article  CAS  Google Scholar 

  • Kirk, W.W., J.M. Stein, R.L. Schafer, and R.S. Shaw. 2001. Evaluation of at-planting in-furrow soil applications of Ridomil 4EC, Ultra Flourish 2EC and phosphonic acid programs for potato pink rot and Pythium leak control, 2000. Fungicide and Nematicide Tests 56: 44.

    Google Scholar 

  • Knowles, R.N., and E.S. Plissey. 2008. Maintaining tuber health during harvest, storage, and post-storage handling. Chapter 10. In Potato Health Managment, 2ndEdition, ed. D.A. Johnson, 79–99. St. Paul: American Pathological Society.

    Google Scholar 

  • Lambert, D.H., M.L. Powelson, and W.R. Stevenson. 2005. Nutritional interactions influencing diseases of potato. American Journal of Potato Research 82 (4): 309–319.

    Article  CAS  Google Scholar 

  • Mayton, H., G.A. Forbes, E.S.G. Mizubuti, and W.E. Fry. 2001. The roles of three fungicides in the epidemiology of potato late blight. Plant Disease 85: 1006–1012.

    Article  CAS  Google Scholar 

  • Moorman, G.W., and S.H. Kim. 2004. Species of Pythium from greenhouses in Pennsylvania exhibit resistance to propamocarb and mefenoxam. Plant Disease 88: 630–632.

    Article  CAS  Google Scholar 

  • Mulrooney, R.P. 1982. Evaluation of Ridomil for pink rot and leak control, 1981. Fungicide and Nematicide Tests 37: 78.

    Google Scholar 

  • Mulrooney, R.P. 1998. Evaluation of foliar fungicides to control Pythium leak, 1997. Fungicide and Nematicide Tests 53: 208.

    Google Scholar 

  • Payne, P., and G. Williams. 1990. Hymexazol treatments of sugar-beet seed to control seedling diseases caused by Pythium spp. and Aphanomyces cochlioides. Crop Protection 9: 371–377.

    Article  CAS  Google Scholar 

  • Platt, H.W., R.D. Peters, T. Kloepfer-Dawes, R. Coffin, Y. Leclerc, I. Macdonald, and K. MacIsaac. 2003. Foliar and in-furrow treatments of mefenoxam for control of leak or watery rot of potatoes. Tests of Agrochemicals and Cultivars 24: 4–5.

    CAS  Google Scholar 

  • Porter, L.D., P.B. Hamm, N.L. David, S.L. Gieck, J.S. Miller, B. Gundersen, and D.A. Inglis. 2009. Metalaxyl-M-resistant Pythium species in potato production areas of the Pacific Northwest of the USA. American Journal of Potato Research 86 (4): 315–326.

    Article  CAS  Google Scholar 

  • Powelson, M.L., and R.C. Rowe. 2008. Managing diseases caused by seedborne and soilborne fungi and fungus-like pathogens. Chapter 19. In Potato Health Managment, 2nd Edition, ed. D.A. Johnson, 183–195. St. Paul: American Pathological Society.

    Google Scholar 

  • Salas B., Secor, G.A. 2001. Leak. In: Compendium of Potato Diseases, 2nd Edition, ed. W.R. Stevenson, R. Loria, G.D. Franc, D.P. W, 30–31. St Paul: American Phytopahological society.

  • Salas, B., G.A. Secor, R.J. Taylor, and N.C. Gudmestad. 2003. Assessment of resistance of tubers of potato cultivars to Phytophthora erythroseptica and Pythium ultimum. Plant Disease. 87: 91–97.

    Article  Google Scholar 

  • Secor, G.A., and N.C. Gudmestad. 1999. Managing fungal diseases of potato. Canadian Journal of Plant Pathology 21 (3): 213–221.

    Article  CAS  Google Scholar 

  • Taylor, R.J., B. Salas, G.A. Secor, V. Rivera, and N.C. Gudmestad. 2002. Sensitivity of North American isolates of Phytophthora erythroseptica and Pythium ultimum to mefenoxam (metalaxyl). Plant Disease 86: 797–802.

    Article  CAS  Google Scholar 

  • Taylor, R.J., B. Salas, and N.C. Gudmestad. 2004. Differences in etiology affect mefenoxam efficacy and the control of pink rot and leak tuber diseases of potato. Plant Disease 88 (3): 301–307.

    Article  CAS  Google Scholar 

  • Taylor, R.J., J.S. Pasche, and N.C. Gudmestad. 2008. Susceptibility of eight potato cultivars to tuber infection by Phytophthora erythroseptica and Pythium ultimum and its relationship to mefenoxam-mediated control of pink rot and leak. Annals of Applied Biology 152 (2): 189–199.

    Article  CAS  Google Scholar 

  • Tsror (Lahkim), L., M. Aharon, and O. Erlich. 1999. A survey of bacterial and fungal seedborne diseases in imported and domestic potato seed tubers. Phytoparasitica 27: 215–226.

    Article  Google Scholar 

  • Yellareddygari, S.K.R., R.J. Taylor, J.S. Pasche, and N.C. Gudmestad. 2019. Risk assessment analysis of potato genotype susceptibility to water rot-causing oomycetes. Crop Protection 115: 59–63.

    Article  Google Scholar 

Download references

Acknowledgements

The authors thank Sara Lebiush for statistical analyses. This research was funded by The Vegetables Producing and Marketing Board, Israel. Contribution from Agricultural Research Organization, Institute of Plant Protection, Gilat Research Center.

Author information

Authors and Affiliations

  1. Department of Plant Pathology, Agricultural Research Organization-Volcani Institute, Gilat Research Center, MP Negev, 8528000, Israel

    Leah Tsror (Lahkim), Orly Erlich & Marina Hazanovsky

  2. Ego Ltd, Negev, Israel

    Gilan Marshak & Gil Segev

  3. Yaham Enterprises Ltd, Negev, Israel

    Uri Zig

Authors
  1. Leah Tsror (Lahkim)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Orly Erlich
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Marina Hazanovsky
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Gilan Marshak
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Gil Segev
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Uri Zig
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Leah Tsror (Lahkim).

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Tsror (Lahkim), L., Erlich, O., Hazanovsky, M. et al. Fungicide Field Treatments to Control Potato Leak Caused by Pythium ultimum. Am. J. Potato Res. 98, 115–121 (2021). https://doi.org/10.1007/s12230-021-09822-7

Download citation

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12230-021-09822-7

Keywords

Search

Navigation