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Some long-term effects of slurry on grassland

Published online by Cambridge University Press:  27 March 2009

P. Christie
P. Christie
Affiliation:
Agricultural and Food Chemistry Department, The Queen's University of Belfast, and Department of Agriculture for Northern Ireland, Newforge Lane, Belfast, BT9 5PX
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Summary

A field experiment is described in which three rates of pig and cow slurry were applied to a ryegrass sward over a period of 16 years. The experiment included control plots and plots receiving fertilizer supplying 200 kg N, 32 kg P and 160 kg K/ha per year.

The slurry nutrient concentrations were similar to published values. Pig slurry was more variable than cow slurry and both varied significantly from year to year. Slurry was applied at 50, 100 or 200 m3/ha per year, with each rate divided into three equal applications.

Even the highest slurry application rate did not depress herbage yield, which showed a typical response curve to the amount of soluble nitrogen applied. The ammoniumnitrogen content of slurry (61% on average) gave an adequate measure of its effect on herbage yield when it was applied three times per year in spring and summer.

Recovery of phosphorus in the herbage averaged 30% from pig slurry, 40% from cow slurry and 66% from-fertilizer. Pig slurry supplied more phosphorus than did cow slurry, and herbage phosphorus content was significantly correlated with the amount applied. Much of the slurry phosphorus may have been organically bound and not available to plants in the short term.

Recovery of potassium from pig slurry and fertilizer was nearly 90% and from cow slurry about 70%. Cow slurry supplied potassium in excess of crop requirements so that it accumulated in the soil under the largest dressing. Soil phosphorus reserves declined under the smallest dressing of cow slurry but were maintained at higher application rates. The pig slurry produced a marked accumulation of phosphorus under the largest dressing. The substantial accumulations of phosphorus and potassium from pig and cow slurry respectively gave marked penetration of the soil below 10 cm depth only at the highest application rate. The data suggest that at rates typical of farm practice significant losses of phosphorus and potassium from the rooting zone would be unlikely to occur.

The main invading plant species were Agrostis stolonifera L. and Poa spp. Small slurry dressings produced a similar botanical composition to that of plots given fertilizer. Increasing slurry application rates decreased the proportion of L. perenne and increased that of A. stolonifera but only under the largest dressing did L. perenne fall to a small proportion of the sward and A. stolonifera become very dominant. L. perenne made maximum contribution to herbage dry-matter yield early in the season while the proportion of A. stolonifera increased as the season progressed.

Under these conditions even extremely large slurry dressings did not depress herbage yield and may not necessarily have reduced herbage quality despite marked changes in sward botanical composition.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 108 , Issue 3 , June 1987 , pp. 529 - 541
Copyright
Copyright © Cambridge University Press 1987

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References

Adams, S. N. (1974). The response of pastures in Northern Ireland to N, P and K fertilizers and to animal slurries. III. Effects in experiments continued for either two or three years. Journal of Agricultural Science, Cambridge 82, 129–137.CrossRefGoogle Scholar
Adams, S. N. & McAllister, J. S. V. (1975). Nutrient cycles involving phosphorus and potassium on livestock farms in Northern Ireland. Journal of Agricultural Science, Cambridge 85, 345–349.CrossRefGoogle Scholar
Berryman, C. (1971). Residual value of slurries (cattle, pig and poultry). In Residual Value of Applied Nutrients, pp. 326–333. Technical Bulletin No. 20., Ministry of Agriculture, Fisheries and Food. London: H.M.S.O.Google Scholar
Castle, M. E. & Drysdale, A. D. (1966). Liquid manure as a grassland fertilizer. V. The response to mixtures of liquid manure (urine) and dung. Journal of Agricultural Science, Cambridge 67, 397–404.CrossRefGoogle Scholar
Collins, D. P. & Murphy, W. E. (1979). Effect of sward composition on animal output. In Changes in Sward Composition and Productivity (ed. Charles, A. H. and Haggar, R. J.), pp. 93–100. Occasional Symposium No. 10. Hurley: British Grassland Society.Google Scholar
Culley, J. L. B., Phillips, P. A., Hore, F. R. & Patni, N. K. (1981). Soil chemical properties and removal of nutrients by corn resulting from different rates and timing of liquid dairy manure applications. Canadian Journal of Soil Science 61, 35–46.CrossRefGoogle Scholar
During, C. & Weeda, W. C. (1973). Some effects of cattle dung on soil properties, pasture production, and nutrient uptake. II. Influence of dung and fertilizers on sulphate sorption, pH, cation-exchange capacity, and the potassium, magnesium, calcium, and nitrogen economy. New Zealand Journal of Agricultural Research 16, 431–438.CrossRefGoogle Scholar
Hannapel, R. J., Fuller, W. H., Bosma, S. & Bullock, J. S. (1964). Phosphorus movement in a calcareous soil. I. Predominance of organic forms of phosphorus in phosphorus movement. Soil Science 97, 350–357.CrossRefGoogle Scholar
Henderson, J. L., Edwards, R. S. & Hammerton, J. L. (1962). The productivity of five grass species at six levels of compound fertilizer application. 1. Dry-matter production. Journal of Agricultural Science, Cambridge 59, 5–11.CrossRefGoogle Scholar
Hopkins, A. & Green, J. O. (1979). The effect of soil fertility and drainage on sward changes. In Changes in Sward Composition and Productivity (ed. Charles, A. H. and Haggar, R. J.), pp. 115–129. Occasional Symposium No. 10. Hurley: British Grassland Society.Google Scholar
Howe, C. D. & Snaydon, R. W. (1986). Factors affecting the performance of seedlings and ramets of invading grasses in an established ryegrass sward. Journal of Applied Ecology 23, 139–146.CrossRefGoogle Scholar
Kuo, S. & Baker, A. S. (1982). The effect of soil drainage on phosphorus status and availability to corn in long-term manure-amended soils. Soil Science Society of America Journal 46, 744–747.CrossRefGoogle Scholar
McAllister, J. S. V. (1976). Studies in Northern Ireland on problems related to the disposal of slurry. In Agriculture and Water Quality, pp. 418–431. ADAS Technical Bulletin No. 32. Ministry of Agriculture, Fisheries and Food. London: H.M.S.O.Google Scholar
McAllister, J. S. V. (1977). Efficient recycling of nutrients. Proceedings of a Seminar on the Utilization of Manures by Landspreading (ed. Vorburg, J. H.), pp. 87–103. Commission of the European Communities, Modena, Italy.Google Scholar
McAllister, J. S. V. (1981). Responses to slurry-N in Northern Ireland. In Nitrogen Losses and Surface Run-off from Landspreading of Manures (ed. Brogan, J. C.), pp. 389–393. The Hague: Nijhoff/Junk.Google Scholar
McAllister, J. S. V. & Stevens, R. J. (1981). Problems related to phosphorus in the disposal of slurry. In Phosphorus in Sewage Sludge and Animal Waste Slurries (ed. Hucker, T. W. G. and Catroux, G.), pp. 383–396. Dordrecht: Reidel.Google Scholar
Ministry of Agriculture, Fisheries and Food (1981). The Analysis of Agricultural Materials, 2nd edn, Reference Book 427. London: H.M.S.O.Google Scholar
Ministry of Agriculture, Fisheries and Food (1985). 1985–86 Fertilizer Recommendations for Agricultural and Horticultural Crops, 4th edn, Reference Book 209. London: H.M.S.O.Google Scholar
Morrison, J. (1979). Botanical change in agricultural grassland in Britain. In Changes in Sward Composition and Productivity (ed. Charles, A. H. and Haggar, R. J.), pp. 5–10. Occasional Symposium No. 10. Hurley: British Grassland Society.Google Scholar
Rolston, D. E., Rauschkolb, B. S. & Hoffman, D. L. (1975). Infiltration of organic phosphorus compounds in soil. Soil Science Society of America Proceedings 39, 1089–1094.CrossRefGoogle Scholar
Smith, A. & Allcock, P. J. (1985). Influence of age and year of growth on the botanical composition and productivity of swards. Journal of Agricultural Science, Cambridge 105, 299–325.CrossRefGoogle Scholar
Smith, G. S., Middleton, K. R. & Edmonds, A. S. (1978). A classification of pasture and fodder plants according to their ability to translocate sodium from their roots into aerial parts. New Zealand Journal of Experimental Agriculture 6, 183–188.CrossRefGoogle Scholar
Smith, K. A. & Unwin, R. J. (1985). Fertilizer value of animal waste slurries. In Crop Nutrition and Soil Science 1983, Reference Book 253 (83), pp. 11–41. Ministry of Agriculture, Fisheries and Food. London: H.M.S.O.Google Scholar
Stevens, R. J. (1983). A comparison of the methods used in soil testing for soil fertility in Northern Ireland before and after 1983. Record of Agricultural Research, Northern Ireland 31, 17–22.Google Scholar
Stewart, T. A. (1968). The effect of age, dilution, and rate of application of cow and pig slurry on grass production. Record of Agricultural Research, Northern Ireland 17, 67–90.Google Scholar
Tunney, H. & Molloy, S. (1975). Variations between farms in N, P, K, Mg, and dry matter composition of eattle, pig and poultry manures. Irish Journal of Agricultural Research 14, 71–79.Google Scholar
Unwin, R. J. (1981). Phosphorus accumulation and mobility from large applications of slurry. In Phosphorus in Sewage Sludge and Animal Waste Slurries (ed. Hucker, T. W. G. and Catroux, G.) pp. 333–344. Dor-drecht: Reidel.Google Scholar
Unwin, R. J., Pain, B. F. & Whinham, W. N. (1980). The effect of rate and time of application of nitrogen in cow slurry on grass cut for silage. Agricultural Waster 15, 253–268.CrossRefGoogle Scholar