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Yield depression in New Zealand potato crops associated with soil compaction and soil-borne diseases

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posted on 2023-05-03, 19:26 authored by Sarah Sinton, Richard Falloon, Peter Jamieson, Esther MeenkenEsther Meenken, Farhat Shah, Hamish Brown, Steven Dellow, Alex Michel, John Fletcher
In New Zealand, potato crop yields of 90 t ha−1 are achievable but at 55 t ha−1, the average is becoming economically unsustainable. In 2012/13, a grower-initiated survey found that Rhizoctonia solani and Spongospora subterranea (soil-borne pathogens) and soil compaction were widespread in 11 Canterbury potato crops. Targeted areas in these crops had measured yield losses of 0 (healthy plants) – 42 (diseased, resource constrained plants) t ha−1, limiting the farmer-measured field yield to a 56 t ha−1 average. In 2014/15, growth, water use and health of three contrasting crops were measured. Near-potential yield was achieved in one crop when disease incidence and severity were low and resources adequate. The other two crops yielded less than potential; one had an inadequate water supply and the other widespread soil-borne disease. Any suspected links between soil-borne disease, soil compaction and yield were further investigated by using them as factors in replicated experiments reported elsewhere.


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© The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.


  • English

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Springer Nature

Journal title

American Journal of Potato Research




Sinton, S. M., Falloon, R. E., Jamieson, P. D., Meenken, E. D., Shah, F. A., Brown, H. E., Dellow, S. J., Michel, A. J., & Fletcher, J. D. (2022). Yield depression in New Zealand potato crops associated with soil compaction and soil-borne diseases. American Journal of Potato Research, 99, 160–173.

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