Field trials of foliar sprays of 3,5-dichlorophenoxyacetic acid (3,5-D) against common scab on potatoes
- 38 Downloads
Foliar sprays of 3,5-dichlorophenoxyacetic acid (3,5-D) in June or early July decreased the incidence of common scab by about 30% in four field trials on cv. Maris Piper and cv. Désirée; however, significant decreases in yield and in mean tuber weight were also common.
The effects of 3,5-D on potatoes resembled those of the growth retardant daminozide in some ways, but 3,5-D was not persistent enough to have a useful effect on scab in the field.
Additional keywordsStreptomyces scabies daminozide
Unable to display preview. Download preview PDF.
- Burrell, M. M., 1982. The translocation of 3,5-dichlorophenoxyacetic acid in relation to its effect on potato common scab.J. exp. Bot. 33: 215–220.Google Scholar
- Dicks, J. W., 1972. Uptake and distribution of the growth retardant, aminozide, in relation to control of lateral shoot elongation inChrysanthemum morifolium.Ann. appl. Biol. 72: 313–326.Google Scholar
- Firn, R. D. & R. L. Wain, 1971. Studies on plant growth-regulating substances. XXXIV. The effects of 3,5-dichlorophenoxyacetic acid on plant growth.Ann. appl. Biol. 69: 73–80.Google Scholar
- Humphries, E. C. & P. W. Dyson, 1967. Effect of a growth inhibitor, N-dimethylaminosuccinamic acid (B9), on potato plants in the field.Eur. Potato J. 10: 116–126.Google Scholar
- Lapwood, D. H., 1973.Streptomyces scabies and potato scab disease. In: G. Sykes & F. A. Skinner (Ed.), Actinomycetales: characteristics and practical importance.Soc. appl. Bact. Symposium Series No. 2, p. 253–260.Google Scholar
- Lapwood, D. H. & P. W. Dyson, 1966. An effect of nitrogen on the formation of potato tubers and the incidence of common scab (Streptomyces scabies).Pl. Path., 15: 9–14.Google Scholar
- Large, E. C. & J. K. Honey, 1955. Survey of common scab of potatoes in Great Britain, 1952 and 1953.Pl. Path. 4: 1–8.Google Scholar
- McIntosh, A. H. & G. L. Bateman, 1979. Effects of foliar sprays of daminozide on the incidence of potato common scab.Ann. appl. Biol. 92: 29–38.Google Scholar
- McIntosh, A. H., G. L. Bateman, K. Chamberlain, G. W. Dawson & M. M. Burrell, 1981. Decreased severity of potato common scab after foliar sprays of 3,5-dichlorophenoxyacetic acid, a possible antipathogenic agent.Ann. appl. Biol. 99: 275–281.Google Scholar
- McIntosh, A. H. & M. M. Burrell, 1980. Movement of ethionine in potato plants after foliar application against common scab.Physiol. Pl. Path. 17: 205–212.Google Scholar
- Taylor, H. F. & R. L. Wain, 1978. Studies on plant growth-regulating substances. L11. Growth retardation by 3,5-dichlorophenoxyethylamine and 3,5-dichlorophenoxybutyric acid arising from their conversion to 3,5-dichlorophenoxyacetic acid in tomato plants.Ann. appl. Biol. 89: 271–275.Google Scholar
- Thomas, T. H. 1974. An assessment of the value of plant growth regulators and herbicides for crops grown for the processed food industries.Pestic. Sci. 5: 87–100.Google Scholar