Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-03T05:19:19.970Z Has data issue: false hasContentIssue false

Population studies with wheat: III. Seed rates in nursery trials and field plots

Published online by Cambridge University Press:  27 March 2009

H. G. Hudson
Affiliation:
School of Agriculture, Cambridge

Extract

The discrepancies between nursery plots and field plots, found by previous workers when investigating yield problems with wheat, are discussed. The reason for these differences is given, and the true optimum plant density identified.

It is shown that the intensity of competition for water and soil nutriments influences the optimum plant density, and that a high intensity of competition is associated with a low optimum plant density. A summary of literature is given, and the varying values for the optimum seed rates in different parts of the world interpreted in the light of water and soil nutriment supplies.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1941

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Anonymous, (1926). J. R. agric. Soc. 87, 103.Google Scholar
Bergh, O. I., Stephen, D. E., McCall, M. A. & Bracken, A. F. (1919). Rep. Minn. agric. Br. Stas (Grand Rapids), 1915—19, p. 14.Google Scholar
Bracken, A. F. & Stewart, G. (1930). Bull. Utah agric. Exp. Sta. no. 222.Google Scholar
Bracken, A. F., Stewart, G., Pittman, D. W., Wilson, A. L. & Winser, L. M. (1925). Bull. Utah agric. Exp. Sta. no. 192.Google Scholar
Clements, F. E., Weaver, J. E. & Hanson, H. C. (1922). Plant Competition. Carnegie Institution, Washington.Google Scholar
Doughty, L. R. & Engledow, F. L. (1928). J. agric. Sci. 18, 317.CrossRefGoogle Scholar
Dowling, R. N. (1908). J. S. E. agric. Coll. 17, 49.Google Scholar
Downing, R. G. (1911). Agric. Gaz. N.S.W. 22, 600.Google Scholar
Engledow, F. L. (1925). J. agric. Sci. 15, 125.CrossRefGoogle Scholar
Engledow, F. L. (1926). J. agric. Sci. 16, 166.Google Scholar
Engledow, F. L. (1928). J. agric. Sci. 18, 1.CrossRefGoogle Scholar
Engledow, F. L. & Ramiah, K. (1930). J. agric. Sci. 20, 265.CrossRefGoogle Scholar
Fairfield-Smith, H. (1937). Bull. Conn. Sci. industr.Res. Aust. no. 109.Google Scholar
Forster, H. C. & Vasey, A. J. (1930). J. Dep. Agric. Viet. 28, 449.Google Scholar
Frenkel, O. H. (1930). Hep. Wheat Res. Inst. N.Z. 52.Google Scholar
Geordeson, C. C., Butts, F. C. & Sheltok, W. (1892). Bull. Kansas agric. Exp. Sta. no. 33, p. 50.Google Scholar
Godel, G. E. (1935). Sci. Agric. 16, 165.Google Scholar
Harrison, R. M. (1932). J. S.-E. Agric. Coll. 29, 247.Google Scholar
Hays, W. M. (1893). Bull. N. Dakota agric. Exp. Sta. no. 10, p. 3.Google Scholar
Hickman, M. S. (1890). Bull. Ohio agric. Exp. Sta. no. 3, p. 6.Google Scholar
Hickman, J. P. (1897). Bull. Ohio agric. Exp. Sta. no. 82, p. 213.Google Scholar
Hudson, H. G. (1941). J. agric. Sci. 31, 116.CrossRefGoogle Scholar
Hunt, I. F. (1890). Bull. Ill. agric. Exp. Sta. no. 11.Google Scholar
Hutchison, R. G. (1936). J. Amer. Soc. Agron. 28, 699.CrossRefGoogle Scholar
Jardine, W. M. (1916). J. Amer. Soc. Agron. 8, 163.CrossRefGoogle Scholar
Latta, W. C. (1890). Bull. Ind. agric. Exp. Sta. no. 11.Google Scholar
Leighty, C. E. & Taylor, J. W. (1927). Tech. Bull. U.S. Dep. Agric. no. 38.Google Scholar
McMurdo, G. A. (1916). Bull. U.S. Dep. Agric. no. 402.Google Scholar
McDiarmid, R. W. (1911). Agric. Gaz. N.S.W. 22, 599.Google Scholar
Macmillan, J. R. A. (1937). Unpublished—see Fairfield-Smith (1937).Google Scholar
Mackay, A. (1896). Rep. Canada Exp. Fms, p. 377.Google Scholar
Merrill, L. A. (1910). Bull. Utah agric. Exp. Sta. no. 112, p. 95.Google Scholar
Montgomery, E. G. (1912). Bull. Neb. agric. Exp. Sta. no. 127, p. 3.Google Scholar
Morrow, G. E. & Gardner, F. D. (1892). Bull. Ill. agric. Exp. Sta. no. 22, p. 105.Google Scholar
Morrow, G. E. (1894). Bull. Ill. agric. Exp. Sta. no. 34, p. 402.Google Scholar
Morrow, G. E. & Bone, J. H. (1896). Bull. Oklahoma agric. Exp. Sta. no. 28, p. 8.Google Scholar
Nole, C. F. (1917). Bull. Penn. agric. Exp. Sta. no. 148.Google Scholar
Ross, J. F. & Leidigh, A. H. (1912). Bull. U.S. Dep. Agric. Indus. no. 283, p. 79.Google Scholar
Schollander, E. G. (1912). Rep. N. Dak. agric. Exp. Sta. pp. 14.Google Scholar
Sheppherd, J. H. & Ten Eych, A. M. (1900). Bull. N. Dak. agric. Exp. Sta. no. 39, p. 413.Google Scholar
Snyder, W. P. & Burr, W. W. (1909). Bull. Neb. agric. Exp. Sta. no. 109, p. 5.Google Scholar
Steward, R. L. (1918). Bull. New Mexico agric. Exp. Sta. no. 109, 3, p. 8.Google Scholar
Stephen, D. E. & Hill, C. E. (1917). Bull. Oregon agric. Exp. Sta. no. 148.Google Scholar
Sutton, G. L. (1911). Agric. Oaz. N.S.W. 22, 598.Google Scholar
Williams, C. G. & Welton, F. A. (1911). Bull. Ohio agric. Exp. Sta. no. 231, p. 22.Google Scholar
Zavitz, C. A. (1897). Bull. Ontario Agric. Coll. and Exp. Fms, no. 108, p. 14.Google Scholar
Zavitz, C. A. (1928). Bienn. Rep. Kans. agric. Exp. Sta.Google Scholar
Zavitz, C. A. (1924). Bull. Idaho agric. Exp. Sta. no. 133.Google Scholar