Hostname: page-component-7bb8b95d7b-l4ctd Total loading time: 0 Render date: 2024-09-18T03:33:00.578Z Has data issue: false hasContentIssue false
  • English
  • Français

Results from experiments on winter barley measuring the effects of amount and timing of nitrogen and some other factors on the yield and nitrogen content of the grain

Published online by Cambridge University Press:  27 March 2009

A. Penny ,
F. V. Widdowson  and
J. F. Jenkyn
A. Penny
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts., AL5 2JQ
F. V. Widdowson
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts., AL5 2JQ
J. F. Jenkyn
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts., AL5 2JQ
Get access Rights & Permissions [Opens in a new window]

Summary

Seven experiments on winter barley, made during 1979–81, measured the effects of several amounts of nitrogen, applied at different times in spring, on grain yield and nitrogen content. All of these experiments also tested a growth regulator applied in spring, and five of them tested fungicide sprays. In 1980 the experiment at Rothamsted also tested sowing dates, and an eighth experiment, also at Rothamsted in 1980, tested sowing dates and mildew fungicides applied in autumn or spring. In all the experiments treatments were tested in factorial combination.

N applied in February was less effective than N applied in March and both were less effective, in terms of grain yield, than N applied in April. Divided dressings were best applied in February and April or March and April; effects on % N in grain followed the same pattern and so, therefore, did the efficiency of uptake of fertilizer N. The growth regulator consistently reduced the length of the straw and diminished lodging; it increased yields in five of the seven experiments in which it was tested.

Responses to fungicides were inconsistent from year to year. Sowing in September rather than in October 1979 increased yield in both of the experiments at Rothamsted in 1980, especially of the 6-row variety Hoppel.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 106 , Issue 3 , June 1986 , pp. 537 - 549
Copyright
Copyright © Cambridge University Press 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Anon. (1976). Manual of Plant Growth Stage and Disease Assessment Keys. Ministry of Agriculture, Fisheries and Food. Agricultural Development and Advisory Service.Google Scholar
Anon. (1984). Agricultural Statistics for the United Kingdom, 1983. London: H.M.S.O.Google Scholar
Green, C. F., Furmston, D. T. & Ivins, J. D. (1985). Time of sowing and the yield of winter barley. Journal of Agricultural Science, Cambridge 104, 405–411.CrossRefGoogle Scholar
Knopp, E. (1985). Shoot apex development, date of anthesis and grain yield of autumn-sown spring and winter barley (Hordeum vulgare L.) after different sowing times. Journal of Agronomy and Crop Science 155, 73–81.Google Scholar
Prew, R. D., Church, B. M., Dewar, A. M., Lacey, J., Penny, A., Plumb, R. T., Thorne, Gillian N., Todd, A. D. & Williams, T. D. (1983). Effects of eight factors on the growth and nutrient uptake of winter wheat and on the incidence of pests and diseases. Journal of Agricultural Science, Cambridge 100, 363–382.CrossRefGoogle Scholar
Whitear, J. D. (1982). Fertilizers for winter and spring barley. Agtec, Summer 1982, 14–17.Google Scholar
Widdowson, F. V. (1973). Results from experiments with wheat and barley measuring the effects of paths on yield. Experimental Husbandry 23, 16–20.Google Scholar
Widdowson, F. V., Darby, R. J., Dewar, A. M., Jenkyn, J. F., Kerry, B. R., Lawlor, D. W., Plumb, R. T., Ross, G. J. S., Scott, G. C., Todd, A. D. & Wood, D. W. (1986). The effects of sowing date and other factors on growth, yield and nitrogen uptake, and on the incidence of pests and diseases, of winter barley at Rothamsted from 1981 to 1983. Journal of Agricultural Science, Cambridge 106, 551–574.CrossRefGoogle Scholar
Widdowson, F. V., Jenkyn, J. F. & Penny, A. (1976). Results from two barley experiments at Saxmundham, Suffolk, measuring effects of the fungicide benodanil on three varieties, given three amounts of nitrogen at two times 1973–4. Journal of Agricultural Science, Cambridge 86, 271–280.CrossRefGoogle Scholar
Widdowson, F. V., Jenkyn, J. F. & Penny, A. (1982). Results from factorial experiments testing amounts and times of granular N-fertilizer, late sprays of liquid N-fertilizer and fungicides to control mildew and brown rust on two varieties of spring barley at Saxmundham, Suffolk 1975–8. Journal of Agricultural Science, Cambridge 99, 377–390.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