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The relationship between yield and digestibility in spring varieties of barley, oats and wheat after ear emergence

Published online by Cambridge University Press:  27 March 2009

R. Q. Cannell
Affiliation:
School of Agriculture, University of Newcastle upon Tyne
H. T. Jobson
Affiliation:
School of Agriculture, University of Newcastle upon Tyne

Summary

The pattern of dry matter (D.M.) yield, digestibility and nitrogen (N) content of two contrasted grain:straw (G/S) ratio varieties each of barley, oats and wheat grown at three levels of nitrogen was measured over the 30 days after ear emergence, D.M. yield rose with time, while digestibilityand N content declined. Although the D.M. yield was highest in the oat variety, Maelor, one barley variety, Deba Abed, had the highest digestibility and a similar yield of digestible dry matter. Wheat was lowest yielding. The low G/S varieties of wheat and oats had higher yields of digestible D.M., but the high G/S variety, Deba Abed, was the higher yielding barley. Yield of digestible D.M. increased with increasing N fertilizer, due to the increased D.M. yield.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1968

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References

REFERENCES

Aldrich, D. T. A. & Dent, J. W. (1967). The relationship between yield and digestibility in the primary growth of nine grass varieties. J. natn. Inst. agric. Bot. 11, 104–13.Google Scholar
Bunting, E. S. (1966). Maize—an alternative fodder crop in Britain. Outl. Agric. 5, 104–9.Google Scholar
Cowling, D. W. &Lockyer, D. R. (1965). A comparison of the reaction of different grass species to fertilizer nitrogen and to growth in association with white clover. I. Yield of dry matter. J. Br. Grassld Soc. 20, 197204.CrossRefGoogle Scholar
Dent, J. W.Aldrich, D. T. A. & Silvey, V. (1967). Systematic testing of quality in grass varieties. I. An assessment of the degree of precision obtainable in comparing in vitro digestibility figures. J. Br. Grassld Soc. 22, 270–6.Google Scholar
Dent, J. W. & Boyd, A. G. (1965). Grain and straw under upland conditions in Scotland. J. natn. Inst. agric. Bot. 10, 180–7.Google Scholar
Greig, D. J. (1968). Unpublished work on the conservation of forage oats.Google Scholar
Holliday, R. & Wilman, D. (1965). The effect of fertilizer nitrogen and frequency of defoliation on yield of grassland herbage. J. Br. Grassld Soc. 20, 3240.CrossRefGoogle Scholar
Holmes, W. & Maclhsky, D. S. (1955). The intensive production of herbage for crop drying. Part VI. A study of the effect of intensive nitrogen fertilizer treatment on species and strains of grass, grown alone and with white clover. J. agric. Sci., Camb. 46, 267–86.Google Scholar
Hopkins, J. R. (1968). Whole crop barley for silage. N.A.A.S. Q. Rev. no. 79, 117–20.Google Scholar
Kirby, E. J. M. (1967). The effect of plant density upon the growth and yield of barley. J. agric. Sci., Camb. 68, 317–24.Google Scholar
Minson, D. J., Harris, C. E., Milford, R. & Raymond, W. F. (1964). The digestibility and voluntary intake of S. 22 and H. I ryegrass, S.170 tall fescue, S.48 timothy, S.215 meadow fescue and germinal cocksfoot. J. Br. Grassld Soc. 19, 298305.CrossRefGoogle Scholar
Nicholson, I. A. (1957). The effect of stage of maturity on the yield and chemical composition of oats for haymaking. J. agric. Sci., Camb. 49, 129–40.CrossRefGoogle Scholar
Reith, J. W. S., Inkson, R. H. E., Stewart, A. B., Holmes, W., Maclusky, D. S., Reid, D.Heddle, R. G., Clouston, D. & Copeman, G. J. F. (1961). The effects of fertilizers in herbage production. I. The effects of nitrogen, phosphate and potash on yield. J. agric. Sci., Camb. 56, 1730.CrossRefGoogle Scholar
Rogers, H. H. (1967). Breeding for maximum production. Fodder Conservation, Br. Grassld Soc., Occasional Symposium, no. 3, p. 159.Google Scholar
Rogers, H. H. & Whitmore, E. T. (1966). A modified method for the in vitro determination of herbage digestibility in plant-breeding studies. J. Br. Grassld Soc. 21, 150–2.Google Scholar
Swift, G. (1968). The feeding value of whole crop forages. Scott. Agric. 67, 43–6.Google Scholar
Watson, D. J., Thorne, G. N. & French, S. A. W. (1958). Physiological causes of differences in grain yield between varieties of barley. Ann. Bot. 22, 321–51.Google Scholar
Watson, D. J., Thorne, G. N. & French, S. A. W. (1963). Analysis of growth and yield of winter and spring wheats. Ann. Bot. 27, 1–22.Google Scholar