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Effects of early application of chlormequat on tillering and yield of winter wheat

Published online by Cambridge University Press:  27 March 2009

P. S. Kettlewell ,
Eleri A. Whitley ,
W. S. Meredith  and
R. Sylvester-Bradley
P. S. Kettlewell
Affiliation:
Harper Adams Agricultural College, Newport, Shropshire, TF10 8NB
Eleri A. Whitley
Affiliation:
Harper Adams Agricultural College, Newport, Shropshire, TF10 8NB
W. S. Meredith
Affiliation:
Harper Adams Agricultural College, Newport, Shropshire, TF10 8NB
R. Sylvester-Bradley
Affiliation:
Plant Physiology Unit, Ministry of Agriculture, Fisheries and Food, Woodthorne, Wolverhampton, WVQ 8TQ
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Extract

Early investigations into the effects of the growth retardant chlormequat on wheat and barley showed that in the absence of lodging the number of ears was frequently increased following treatment at the beginning of stem elongation (Humphries, Welbank & Witts, 1965; Alcock, Morgan & Jessop, 1967; Barrett, Meens & Mees, 1967). More recently, earlier applications, at the three-leaf stage, to barley have been shown to be more effective in increasing the number of ears (Koranteng & Matthews, 1982). However, there appears to be little information on the effects on number of ears of early application of chlormequat to winter wheat. Therefore, in 1982 three field experiments were carried out to investigate the effects of early application of chlormequat on the numbers of tillers and ears and grain yield of winter wheat.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 100 , Issue 3 , June 1983 , pp. 735 - 738
Copyright
Copyright © Cambridge University Press 1983

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References

Alcock, M. B., Morgan, E. W. & Jessop, R. S. (1967). The response of wheat and barley to applications of (2-chloroethyl) trimethylammonium chloride (CCC). Agricultural Progress 42, 89–101.Google Scholar
Austin, R. B., Bingham, J., Blackwell, R. D., Evans, L. T., Ford, M. A., Morgan, C. L. & Taylor, M. (1980). Genetic improvements in winter wheat yields since 1900 and associated physiological changes. Journal of Agricultural Science, Cambridge 94, 675–689.CrossRefGoogle Scholar
Barret, D. W. A., Meens, B. E. & Mees, G. C. (1967). The control of lodging in cereals by (2-chloroethyl) trimethylammonium chloride (CCC). Field trials in Britain in 1964 and 1965. Journal of Agricultural Science, Cambridge 68, 39–46.CrossRefGoogle Scholar
Batch, J. J. (1981). Recent developments in growth regulators for cereal crops. Outlook on Agriculture 10, 371–378.CrossRefGoogle Scholar
Bingham, J. (1967). Investigations on the physiology of yield in winter wheat, by comparisons of varieties and by artificial variation in grain number per ear. Journal of Agricultural Science, Cambridge 68, 411–422.CrossRefGoogle Scholar
Bremner, P. M. (1969). Growth and yield of three varieties of wheat, with particular reference to the influence of unproductive tillers. Journal of Agricultural Science, Cambridge 72, 281–287.CrossRefGoogle Scholar
Holliday, R. (1960). Plant population and crop yield. Part 1. Field Crop Abstracts 13, 159–167.Google Scholar
Humphries, E. C., Welbank, P. J. & Witts, K. J. (1965). Effect of CCC (chlorocholine chloride) on growth and yield of spring wheat in the field. Annals of Applied Biology 56, 351–361.CrossRefGoogle Scholar
Koranteng, G. O. & Matthews, S. (1982). Modifications of the development of spring barley by early applications of CCC and GA3, and the subsequent effects on yield components and yield. In Chemical Manipulation of Crop Growth and Development (ed. Mclaren, J. S.), pp. 343–357. London: Butterworth.CrossRefGoogle Scholar
Zadoks, J. C., Chang, T. T. & Konzak, C. F. (1974). A decimal code for the growth stages of cereals. Weed Research 14, 415–421.CrossRefGoogle Scholar