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Response of an old pasture to applied nitrogen under steady-state continuous grazing

Published online by Cambridge University Press:  27 March 2009

J. R. B. Tallowin ,
F. W. Kirkham ,
S. K. E. Brookman  and
M. Patefield
J. R. B. Tallowin
Affiliation:
AFRC Institute for Grassland and Animal Production, North Wyke Research Station, Okehampton, Devon, EX20 2SB, UK
F. W. Kirkham
Affiliation:
AFRC Institute for Grassland and Animal Production, North Wyke Research Station, Okehampton, Devon, EX20 2SB, UK
S. K. E. Brookman
Affiliation:
AFRC Institute for Grassland and Animal Production, North Wyke Research Station, Okehampton, Devon, EX20 2SB, UK
M. Patefield
Affiliation:
AFRC Institute for Grassland and Animal Production, Hurley, UK
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Summary

The response of an old, unimproved mixed-species pasture to fertilizer nitrogen was examined under 4-weekly cutting or continuous grazing with young beef cattle. Five N fertilizer rates were applied: zero, 100, 200, 400 or 800 kg/ha per year. The investigation was carried out in Devon, on a heavy clay soil in a region of high winter rainfall in 1984, 1985 and 1986.

Annual total herbage dry-matter (DM) production, live weight gain (LWG) and utilized metabolizable energy (UME) output all increased with successive increments of fertilizer N up to 400 kg N/ha per year. Under 4-weekly cutting, the response per kg applied N fell below 10 kg DM at an application rate of 268 kg N/ha per year, giving a yield of 10·6 t/ha per year. Under grazing, the overall response during the grazing season per kg applied N fell below 300 kg live weight carried per ha at a fertilizer rate of 248 kg/ha per year, giving a UME output of 78 GJ/ha over the grazing season. High available soil N contributed to the high productivity from these swards. Animal output at moderate (200 kg N/ha per year) N application rates did not appear to be constrained by the initial botanical composition of this unimproved sward. Repeated high N applications in the 400 kg N/ha per year treatment reduced output in 1986 under grazing and cutting, compared with treatments which had received the lower N applications.

The DM yield from the 4-weekly cutting study gave a satisfactory prediction of UME output from this pasture. Climatic conditions, particularly high rainfall, appeared to be an important constraint on animal performance at pasture.

The high UME output achieved from this pasture at 200 kg applied N/ha was well above the average UME for commercial farms.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 115 , Issue 2 , October 1990 , pp. 179 - 194
Copyright
Copyright © Cambridge University Press 1990

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References

REFERENCES

Association of Official Analytical Chemists (1965). Official Methods of Analysis, 10th edn.Washington DC: AOAC.Google Scholar
Baker, R. D. (1986). Efficient use of nitrogen fertilizers. In Grassland Manuring. (Eds Cooper, J. P. & Raymond, W. F.), pp. 15–27. Occasional Symposium of the British Grassland Society, No. 20. Hurley: British Grassland Society.Google Scholar
Baker, R. D. (1988). Grazing management and the integration of grazing and conservation. In Efficient Beef Production from Grass. (Ed. Frame, J.), pp. 65–78. Occasional Symposium of the British Grassland Society, No. 22. Hurley: British Grassland Society.Google Scholar
Butris, G. Y. & Phillips, C. J. C. (1987). The effect of herbage surface water and the provision of supplementary forage on the intake and feeding behaviour of cattle. Grass and Forage Science 42, 259–264.CrossRefGoogle Scholar
Chalmers, A. G., Leech, P. K. & Kershaw, C. D. (1988). Survey of fertilizer practice: fertilizer use on farm crops in England and Wales, 1987. London: Ministry of Agriculture, Fisheries and Food.Google Scholar
Chalmers, A. G., Kershaw, C. D. & Leech, P. K. (1989). Survey of fertilizer practice: fertilizer use on farm crops in England and Wales, 1988. London: Ministry of Agriculture, Fisheries and Food.Google Scholar
Charles, A. H., Jones, J. L., Thornton, M. S. & Thomas, T. A. (1979). Comparison of ryegrass with some common unsown grasses sown separately and in mixtures. In Changes in Sward Composition and Productivity (Eds Charles, A. H. & Haggar, R. J.), pp. 25–29. Occasional Symposium of the British Grassland Society, No. 10. Hurley: British Grassland Society.Google Scholar
Clement, C. R. & Hopper, M. J. (1968). The supply of potassium to high yielding cut grass. NAAS Quarterly Review, No. 79, 101–109.Google Scholar
Collins, D. R. & Murphy, W. E. (1979). Effect of sward composition on animal output. In Changes in Sward Composition and Productivity (Eds Charles, A. H. & Haggar, R. J.), pp. 93–100. Occasional Symposium of the British Grassland Society, No. 10. Hurley: British Grassland Society.Google Scholar
Corrall, A. J. & Fenlon, J. S. (1978). A comparative method of describing the seasonal distribution of production from grasses. Journal of Agricultural Science, Cambridge 91, 61–67.CrossRefGoogle Scholar
Dibb, C. (1985). Problems and benefits of grass weeds. In Weeds, Pests and Diseases of Grassland and Herbage Legumes (Ed. Brockman, J. S.), pp. 112–119. Occasional Symposium of the British Grassland Society, No. 18, BCPC Monograph, No. 29. Croydon: British Crop Protection Council.Google Scholar
Genstat 5 Committee (1987). GENSTAT 5 Reference Manual. Oxford: Clarendon Press.Google Scholar
Green, J. O. & Lazenby, A. (1981). Improvement of permanent grassland. Is reseeding necessary? SPAN 24, 66–69.Google Scholar
Halley, R. J. & Dougall, B. M. (1962). The feed intake and performance of dairy cows fed on cut grass. Journal of Dairy Research 29, 241–248.CrossRefGoogle Scholar
Hopkins, A. (1986). Botanical composition of grassland in England and Wales in relation to soil, environment and management factors. Grass and Forage Science 41, 237–246.CrossRefGoogle Scholar
Hopkins, A., Gilbey, J., Dibb, C., Bowling, P. J. & Murray, P. J. (1990). Response of permanent and reseeded grassland to fertilizer nitrogen. 1. Herbage production and herbage quality. Grass and Forage Science 45, 43–55.CrossRefGoogle Scholar
Jewiss, O. R. (1966). Morphological and physiological aspects of growth of grasses during the vegetative phase. In The Growth of Cereals and Grasses (Eds Milthorpe, F. L. & Ivins, J. D.), pp. 39–54. Proceedings of the Twelfth Easter School in Agricultural Science, University of Nottingham, 1965. London: Butterworths.Google Scholar
Johnson, I. R. & Parsons, A. J. (1985). Use of a model to analyse the effects of continuous grazing managements on seasonal patterns of grass production. Grass and Forage Science 40, 449–458.CrossRefGoogle Scholar
Large, R. V. & Spedding, C. R. W. (1956). The growth of lambs at pasture. 4. Growth at different times of the year. Journal of the British Grassland Society 20, 123–128.CrossRefGoogle Scholar
Marsh, R. (1975). A comparison between spring and autumn pasture for beef cattle at equal grazing pressures. Journal of the British Grassland Society 30, 165–170.CrossRefGoogle Scholar
Michell, P. & Large, R. V. (1983). The estimation of herbage mass of perennial ryegrass swards: a comparative evaluation of a rising-plate meter and a single probe capacitance meter calibrated at and above ground level. Grass and Forage Science 38, 195–199.CrossRefGoogle Scholar
Milk Marketing Board (1976). The Grassmeter. Report of the Breeding and Production Organisation, No. 26, 1975/76. Thames Ditton, Surrey: Milk Marketing Board.Google Scholar
Ministry of Agriculture, Fisheries and Food (1984). Energy Allowances and Feeding Systems for Ruminants. Reference Book 433. London: HMSO.Google Scholar
Ministry of Agriculture, Fisheries and Food (1985). Fertilizer Recommendations. Reference Book 209. London: HMSO.Google Scholar
Ministry of Agriculture, Fisheries and Food (1986). The Analysis of Agricultural Materials. Reference Book 427. London: HMSO.Google Scholar
Morrison, J. (1988). Grassland production: fertilizer-N, water and white clover. In Proceedings of a Colloquium on Nitrogen and Water Use by Grassland (Ed. Wilkins, R. J.), pp. 6–23. Hurley: AFRC Institute for Grassland and Animal Production.Google Scholar
Morrison, J., Jackson, M. V. & Sparrow, P. E. (1980). The response of perennial ryegrass to fertilizer nitrogen in relation to climate and soil. Technical Report, Grassland Research Institute, Hurley No. 27.Google Scholar
Orr, R. J., Parsons, A. J., Treacher, T. T. & Penning, P. D. (1988). Seasonal patterns of grass production under cutting or continuous stocking managements. Grass and Forage Science 43, 199–207.CrossRefGoogle Scholar
Peel, S., Matkin, E. A. & Huckle, C. A. (1988). Herbage growth and utilized output from grassland on dairy farms in south west England: case studies of five farms, 1982 and 1983. II. Herbage utilization. Grass and Forage Science 43, 71–78.CrossRefGoogle Scholar
Prins, W. H. & Neeteson, J. J. (1982). Grassland productivity as affected by intensity of nitrogen fertilization in preceding years. Netherlands Journal of Agricultural Science 30, 245–258.CrossRefGoogle Scholar
Sparrow, P. E. (1979). The comparison of five response curves for representing the relationship between the annual dry-matter yield of grass herbage and fertilizer nitrogen. Journal of Agricultural Science, Cambridge 93, 513–520.CrossRefGoogle Scholar
Tallowin, J. R. B., Williams, J. H. H. & Large, R. V. (1986). Some consequences of imposing different continuous grazing pressures in the spring on sward morphology, herbage quality and the performance of young beef cattle. Journal of Agricultural Science, Cambridge 106, 129–139.CrossRefGoogle Scholar
Tilley, J. M. & Terry, R. A. (1963). A two-stage technique for in vitro digestion of forage crops. Journal of the British Grassland Society 18, 104–111.CrossRefGoogle Scholar
Tyson, K. C. (1986). Weather and soil moisture conditions: North Wyke. Final Annual Report 1984–85, Grassland Research Institute, Hurley, 170–176.Google Scholar
Tyson, K. C. (1988 a). Weather and soil moisture conditions: North Wyke. Annual Report 1985–86, Animal and Grassland Research Institute, Hurley 132–138.Google Scholar
Tyson, K. C. (1988 b). Weather and soil moisture conditions: North Wyke. Annual Report 1986, AFRC Institute for Grassland and Animal Production, Hurley 118–124.Google Scholar
Warren Wilson, J. (1959). Analysis of the foliage area in grassland. In The Measurement of Grassland Productivity (Ed. Ivins, J. D.), pp. 51–61. Proceedings of the Sixth Easter School in Agricultural Science, University of Nottingham, 1958. London: Butterworths.Google Scholar
Whitehead, D. C. (1981). An improved chemical extraction method for predicting the supply of available soil nitrogen. Journal of the Science of Food and Agriculture 32, 359–369.CrossRefGoogle Scholar
Wilkins, R. J., Garwood, E. A., Hopkins, A. & Tallowin, J. R. B. (1987). Beef production from permanent grassland in Britain. Irish Grassland and Animal Production Association Journal, 21, 71–76.Google Scholar
Wilkins, R. J., Newberry, R. D. & Titchen, N. M. (1983). The effects of sward height on the performance of beef cattle grazing permanent pasture. Annual Report 1982, Grassland Research Institute, Hurley 82–83.Google Scholar