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Leaf strength studies of pasture grasses: I. Apparatus, techniques and some factors affecting leaf strength

Published online by Cambridge University Press:  27 March 2009

P. S. Evans
Affiliation:
Grasslands Division, D.S.I.R., Palmerston North, New Zealand

Extract

Leaf tensile-strength measurements have been made at Grasslands Division, D.S.I.R., over several years on a number of pasture grasses (Evans, 1964; Wilson, 1965). These measurements were prompted by the work of Beaumont, Stitt & Snell (1933) and Kneebone (1961), who attempted to relate leaf tensile strength to animal production value, and Edmond (1960, 1964), who considered that the toughness of pasture species may be a factor determining their tolerance to animal treading. The following is a description of the apparatus developed for this work and of the techniques employed.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1967

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References

Beaumont, A. B., Stitt, R. E. & Snell, R. S. (1933). Some factors affecting the palatability of pasture plants. J. Am. Soc. Agron. 25, 123–8.Google Scholar
Edmond, D. B. (1960). Sheep's feet and pasture plants. Proc. 22nd Conf. N.Z. Grassld. Ass., pp. 111–21.Google Scholar
Edmond, D. B. (1964). Some effects of sheep treading on the growth of 10 pasture species. N.Z. Jl agric. Res. 7, 116.Google Scholar
Evans, P. S. (1964). A study of leaf strength in four ryegrass varieties. N.Z. Jl agric. Res. 7, 508–13.Google Scholar
Evans, P. S. (1967). Leaf strength studies of pasture grasses. II. Strength, cellulose content and sclerenchyma tissue proportions of eight grasses grown as single plants. J. agric Sci., Camb. 69, 175181.Google Scholar
Frey-Wyssling, A. (1957). Macromolecules in Cell Structure, pp. 1730. Cambridge, Mass.: Harvard University Press.Google Scholar
Kneebone, W. R. (1960). Tensile strength variations in leaves of weeping lovegrass (Eragrostis curvula (Schrad.) Nees.) and certain other grasses. Agron. J. 52, 539–42.Google Scholar
Kneebone, W. R. (1961). Palatability studies in weeping lovegrass. Range Impr. Progr. Rep. 1960. Dept. Agron. Okla. St. Univ. & U.S.D.A. 68.Google Scholar
Meredith, R. (1946). Molecular orientation and the tensile properties of cotton fibres. J. Text. Inst. 37, T 205–18.Google Scholar
Preston, R. D. (1955). The mechanical properties of the cell wall. In Handbuch der Pflanzenphysiologie (ed. Ruhland, W.), vol. I, pp. 745–51. Berlin: Springer-Verlag.Google Scholar
Probine, M. C. (1963). The plant cell wall. Tuatara 11, 115–41.Google Scholar
Spark, L. C., Darnbrough, G. & Preston, R. D. (1958). Structure and mechanical properties of vegetable fibres. II. A micro-extensometer for the automatic recording of load-extension curves for single fibrous cells. J. Text. Inst. 49, T 309–16.Google Scholar
Wardrop, A. B. (1951). Cell wall organization and the properties of the xylem. I. Cell wall organization and the variation of breaking load in tension of the xylem in conifer stems. Aust. J. sci. Res. B4, 391414.Google Scholar
Weinzierl, T. (1877). Arbeiten des pflanzenphysiologischen Institutes der k.k. Wiener Universität. XI. Beiträge zur Lehr von der Festigkeit und Elasticität Vegetabilischer Gewebe und Organe. Sitzb. Wien 76, 385461.Google Scholar
Wilson, D. (1965). Nutritives value and the genetic relationships of cellulose content and leaf tensile strength in Lolium. J. agric. Sci., Camb. 65, 285–92.Google Scholar