Summary
Different amounts ofRhizoctonia solani inoculum were applied to sprouted and non-sprouted seed tubers cultivar Désirée during planting in field experiments at Rothamsted in 1984 and 1985. Severity of stem canker and stolon infection increased with increasing amounts of inoculum; with small or medium amounts these infections were most severe on plants from sprouted seed. In 1985 plants grown from non-sprouted, seed had most stem canker when large amounts of inoculum were applied.
Severe infection following high inoculum levels delayed shoot emergence, increased the variability in stem height and decreased the mean height of stems and weight of foliage but did not affect the number of stems per plant or final plant populations. Tuber initiation was delayed and tuber numbers slightly decreased by severe infection and at harvest the size distribution of tubers was altered. Tuber yields from severely infected plants were decreased by 15% (sprouted seed) and 19% (non-sprouted seed) in 1984 and by 17 and 28% respectively in 1985.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Brenchley, G. H. & H. J. Wilcox, 1979.Potato Diseases, HMSO, London, 106 pp.
Frank, J. A., S. S. Leach & R. E. Webb, 1976. Evaluation of potato clone reaction toRhizoctonia solani.Plant Disease Reporter 60: 910–912.
Glendenning, D., 1965. Some aspects of the infection of potato stolons byRhizoctonia solani.European Potato Journal 8: 189–912.
Harrison, M. D., 1978. The Rhizoctonia disease of potatoes: importance and control. In:Control of important fungal diseases of potatoes. Report of a Planning Conference, pp. 129–150, Peru.
Hide, G. A., P. J. Read & J. P. Sandison, 1985a. Stem canker (Rhizoctonia solani) of maincrop potatoes. I. Development of the disease.Annals of Applied Biology 106: 413–422.
Hide, G. A., P. J. Read & J. P. Sandison, 1985b. Stem canker (Rhizoctonia solani) of maincrop potatoes. II. Effects on growth and yield.Annals of Applied Biology 106: 423–437.
Hide, G. A., P. J. Read, J. P. Sandison & S. M. Hall, 1988a. Stem canker (Rhizoctonia solani) on five early and seven maincrop potato cultivars. I. Infection of shoots, stolons and tubers.Annals of Applied Biology (in press).
Hide, G. A., P. J. Read, J. P. Sandison & S. M. Hall, 1988b. Stem canker (Rhizoctonia solani) on five early and seven maincrop potato cultivars. II. Effects on growth and yield.Annals of Applied Biology (in press).
Hirst, J. M. & G. A. Salt, 1959.Oospora pustulans Owen & Wakefield as a parasite of potato root systems.Transactions of the British Mycological Society 42: 59–66.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Read, P.J., Hide, G.A., Firmager, J.P. et al. Growth and yield of potatoes as affected by severity of stem canker (Rhizoctonia solani). Potato Res 32, 9–15 (1989). https://doi.org/10.1007/BF02365813
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02365813