Abstract
The fate of marked sections of stolons of white clover (Trifolium repens) over a 50-week period from May 1987 was followed in grazed grass/clover swards maintained at 5-cm sward surface height with and without N fertiliser. There was little effect of N treatment on the pattern of survival of stolon sections. The proportion of live stolons recovered decreased during the experiment, and in May 1988 on average only 29% of the marked sections remained alive. At all harvests only a small percentage of stolon sections showed signs of senescence; the maximum percentage, on average 20% of those marked, occurred in autumn, 15–20 weeks after marking. Following this period, i.e. in late autumn/winter, the most rapid increase in percentage of decomposed stolons was measured. Over 50% of stolon sections were buried within the 5-week period following marking and nearly all were buried after 20 weeks; generally a much smaller proportion of stolon tips was buried. Nutrient concentrations of N, P and K fell to their lowest levels in autumn, before increasing in the following spring. Results are discussed in relation to the cycling of nutrients via stolon senescence.
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References
Allen S E 1989 Chemical Analysis of Ecological Materials. 2nd edition. Blackwell Scientific Publications, Oxford. 368 p.
Barthram G T, Grant S A and Elston D A 1992 The effects of sward height and nitrogen fertiliser application on changes in sward composition, white clover growth and the stock carrying capacity of an upland perennial ryegrass-white clover sward grazed by sheep for four years. Grass Forage Sci. In press.
Barthram G T, Grant S A, Torvell L, Sim E and Small J 1986 Investigate the manipulation of clover content in grazed swards and the effect on herbage production. The Hill Farming Research Organisation, Biennial Report 1984–85, 21–22.
Brock J L, Hay M J M, Thomas V J and Sedcole J R 1988 Morphology of white clover (Trifolium repens L.) plants in pastures under intensive sheep grazing. J. Agric. Sci. Camb. 111, 273–283.
Caradus J R, Woodfield D R, van denBosch J, Mackay A C and Wewala S 1989 Seasonal variation in stolon growing point density of a world collection of white clover (Trifolium repens L.) cultivars. N.Z. J. Agric. Res. 32, 453–459.
Chapman D F 1983 Growth and demography of Trifolium repens stolons in grazed hill pastures. J. Appl. Ecol. 20, 597–608.
Chapman D F, Clark D A, Land C A and Dymock N 1984 Leaf and tiller or stolon death of Lolium perenne, Agrostis spp., and Trifolium repens in set-stocked and rotationally grazed hill pastures. N.Z. J. Agric. Res. 27, 303–312.
Curll M L and Wilkins R J 1983 The comparative effects of defoliation, treading and excreta on a Lolium perenne-Trifolium repens pasture grazed by sheep. J. Agric. Sci. Camb. 100, 451–460.
Fothergill M, Davies D A, Daniel G J and Morgan C T 1990 Comparative morphology of three contrasting white clover varieties under continuous stocking. Research Meeting No 2, British Grassland Society, September 1990, Session 111, Paper 2. BGS, Hurley.
Grant S A, Torvell L, Sim E and Small J 1991 The effect of stolon burial and defoliation early in the growing season on white clover performance. Grass Forage Sci. 46, 173–182.
Hay M J M 1983 Seasonal variation in the distribution of white clover (Trifolium repens L.) stolons among 3 horizontal strata in 2 grazed swards. N.Z. J. Agric. Res. 26, 29–34.
Hay M J M, Chapman D F, Hay R J M, Pennell C G L, Woods P W and Fletcher R H 1987 Seasonal variation in the vertical distribution of white clover stolons in grazed swards. N.Z. J. Agric Res. 30, 1–8.
Hilder E J 1966 Distribution of excreta by sheep at pasture. Proc. 10th Intern. Grassland Congress, Helsinki, 977–981.
Hill J 1980 The remobilization of nutrients from leaves. J. Plant Nutr. 2, 407–444.
Hoshino M 1974 Translocation and accumulation of assimilates and phosphorus in Ladino clover. Bull. Nat. Grassld Res. Inst. 5, 34–84.
Jackman R H 1960 Pasture and soil improvement. N.Z. J. Agric. Res. 4, 13–29.
Keeney D R and Macgregor A N 1978 Short-term cycling of 15N-urea in a ryegrass-white clover pasture. N.Z. J. Agric. Res. 21, 443–448.
Ladd J N, Amato M, Jackson R B and Butler J H A 1983 Utilisation by wheat crops of nitrogen from legume residues decomposing in soils in the field. Soil Biol. Biochem. 15, 231–238.
Ledgard S F and Saunders W M H 1982 Effects of nitrogen fertiliser and urine on pasture performance and the influence of soil phosphorus and potassium status. N.Z. J. Agric. Res. 25, 541–547.
Leopold A C 1961 Senescence in plant development. Science 134, 1727–1732.
Marriott C A, Smith M A and Baird M A 1987 The effect of sheep urine on clover performance in a grazed upland sward. J. Agric. Sci. Camb. 109, 177–185.
Petersen R G, WoodhouseJr W W and Lucas H L 1956 The distribution of excreta by freely grazing cattle and its effect on pasture fertility. II. Effect of returned excreta on the residual concentration of some fertiliser elements. Agron. J. 48, 444–449.
Ragg J M, Shipley B M, Duncan M A, Bibby J S and Merrilees D W 1976 Sheet 31 Airdrie (Soil). The Macaulay Institute for Soil Research, Aberdeen.
Simpson J R 1987 Nitrogen nutrition of pastures. In Temperate Pastures: Their Production, Use and Management. Eds. J LWheeler, C JPearson and G ERobards. pp 143–154, CSIRO, Australia.
Thomas R J, Logan K A B, Ironside A D and Bolton G R 1988 Transformations and fate of sheep urine-N applied to an upland U.K. pasture at different times during the growing season. Plant and Soil 107, 173–181.
Vallis I 1983 Uptake by grass and transfer to soil of nitrogen from 15N-labelled legume materials applied to a Rhodes grass pasture. Aust. J. Agric. Res. 34, 367–376.
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Marriott, C., Smith, M. Senescence and decomposition of white clover stolons in grazed upland grass/clover swards. Plant Soil 139, 219–227 (1992). https://doi.org/10.1007/BF00009313
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DOI: https://doi.org/10.1007/BF00009313