Abstract
Factors influencing the seasonal and daily variation in denitrification rates in grazed swards were examined at 5 experimental sites in England with wide ranging environmental/geographic conditions. There was a wide range of fertilizer inputs at each site. Rates of denitrification were estimated by a coring and field incubation technique using acetylene to inhibit the reduction of N2O to N2. Major features of the detailed results from two of the sites were: (i) the large ranges in rates of loss, (ii) the relatively low contributions to total annual loss during autumn and winter, (iii) the apparent association of high rates of loss with fertilizer additions made when the soil was wet or immediately preceding a rainfall event, and (iv) significant losses from soil at 10–30 cm in the profile. Multiple quadratic regression analysis of the effects of soil NO3 --N, soil temperature and water was used to explain variability in rates of loss. When separate regressions were fitted within each site × year × season × fertilizer level subset, 51% of the variation in loss was explained on a poorly drained fine loam/silt but only 38% on a freely drained loam.
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References
Ball, P R and Ryden, J C 1984 Nitrogen relationships in intensively managed temperate grasslands. Plant and Soil 76, 23–33.
Baker, R D 1985 Efficient use of nitrogen fertilizers. In Grassland Manuring. Eds. J PCooper and W FRaymond. pp 15–27. British Grassland Society, Hurley, UK.
Barraclough D, Jarvis S C, Davies G P and Williams J 1991 The relation between fertilizer applications and nitrate leaching from grazed grassland at five sites in the UK. Soil Use and Management. (In press.)
Burford, J R and Bremner 1975 Relationship between the denitrification capacities of soils and total, water soluble and readily decomposable soil organic matter. Soil Biol. Biochem. 7, 389–394.
Christensen, S and Tiedje, J M 1988 Denitrification in the field, analysis of spatial and temporal variability. In Nitrogen Efficiency in Agricultural Soils. Eds. D SJenkinson and K ASmith. pp 295–302. Elsevier, London.
Fillery, I R P 1983 Biological denitrification. In Gaseous Loss of Nitrogen from Plant-Soil Systems. Eds. J RFreney and J RSimpson. pp 33–64. Martinus Nijhoff/Dr Junk, The Hague, The Netherlands.
Garwood, E A and Ryden, J C 1986 Nitrate loss through leaching, and surface runoff from grassland: Effects of water supply, soil type and management. In Nitrogen Fluxes in Intensive Grassland Systems. Eds. H Gvan derMeer, J CRyden and G CEnnik. pp 99–113. Martinus Nijhoff, Dordrecht, The Netherlands.
Germon, J C and Couton, T 1981 Effects of repeated land-spreadings of pig slurry on the nitrifying and denitrifying activities in soils. In Nitrogen Losses and Surface Runoff from Landspreading of Manures. Ed. J CBrogan. pp 416–424. Martinus Nijhoff/Dr Junk, The Hague, The Netherlands.
Haynes, R J and Sherlock, R R 1986 Gaseous losses of nitrogen. In Mineral Nitrogen in the Plant-Soil System. Ed. R JHaynes. pp 242–302. Academic Press Inc., London.
Jarvis S C and Barraclough D 1990 Contents and forms of mineral nitrogen under grazed swards (unpublished information).
Ramanathan, V, Callis, L, Cess, R, Hansen, J, Isaksen, I, Kuhn, W, Lacis, A, Luther, F, Mahlman, J, Reck, R and Schlesinger, M 1987 Climate-chemical interactions and effects of changing atmospheric trace gases. Rev. Geophysics 25, 1441–1482.
Ryden, J C 1985 Denitrification loss from managed grassland. In Denitrification in the Nitrogen Cycle. Ed. H LGotterman. pp 121–134. Plenum, New York.
Ryden, J C 1986 Gaseous losses of nitrogen from grassland. In Nitrogen Fluxes in Intensive Grassland Systems. Eds. H Gvan derMeer, J CRyden and G CEnnik. pp 59–73. Martinus Nijhoff, Dordrecht, The Netherlands.
Ryden, J C, Skinner, J H and Nixon, D J 1987 Soil core incubation system for the field measurement of denitrification using acetylene-inhibition. Soil Biol. Biochem. 19, 753–757.
Scholefield, D, Corré, W J, Colbourne, P, Jarvis, S C, Hawkins, J and DeKlein, C 1990 Denitrification in grazed grassland soils assessed using the core incubation technique with acetylene inhibition. In Soil-Grassland-Animal Relations. Proceed. 13th European Grassland Fed. Mtg. Eds. NGáborcik, VKrajcovic and MZimková. Vol II, pp 8–12. EGF, Banska Bystrica, Czechoslovakia.
Tiedje, J M, Simkins, S and Groffman, P M 1989 Perspectives on measurement of denitrification in the field including recommended protocols for acetylene based methods. Plant and Soil 115, 261–284.
Webster, C P and Goulding, K W T 1989 Influence of soil carbon content on dentrification from fallow land during autumn. J. Sci. Food Agric. 49, 131–142.
Whitehead, D C, Garwood, E G and Ryden, J C 1988 The efficiency of nitrogen use in relation to grassland productivity. Animal and Grassland Research Inst. Ann. Rpt. 1985–1986, pp. 86–89.
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Jarvis, S.C., Barraclough, D., Williams, J. et al. Patterns of denitrification loss from grazed grassland: Effects of N fertilizer inputs at different sites. Plant Soil 131, 77–88 (1991). https://doi.org/10.1007/BF00010422
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DOI: https://doi.org/10.1007/BF00010422