Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-23T02:37:04.806Z Has data issue: false hasContentIssue false
  • English
  • Français

The Method of Sampling Swede Bulbs by Cores.

Published online by Cambridge University Press:  27 March 2009

V. McM. Davey
V. McM. Davey
Affiliation:
(Scottish Plant Breeding Station, Corstorphine, Edinbur.)
Get access Rights & Permissions [Opens in a new window]

Extract

Unreplicated dry-matter estimations on cores of swede are subject to errors caused by deflection of the borer from an intended alignment, and also to asymmetric concentrations of solids. A series of experiments was carried out to determine the extent of error likely to occur through deflections from diagonal and horizontal coring alignments. The coefficient of variability was estimated as about 1 per cent. of the drymatter value for either method. The relationship in dry-matter value of horizontal cores, diagonal cores and whole bulbs was found to be approximately 95:97: 100 respectively. There is little difference in accuracy between the coring methods; in practice the horizontal core is capable of more facile application.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 22 , Issue 4 , October 1932 , pp. 767 - 782
Copyright
Copyright © Cambridge University Press 1932

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

(1)Caldwell, J.Studies in translocation. No. 1. Movement of food materials in the Swedish turnip. Proc. Roy. Soc. (Edin.) (1930), 50, 2.Google Scholar
(2)Collins, S. H.Variation in the chemical composition of the swede. J. Agric. Sci. (1905–1906), 1, 89 and 375.Google Scholar
(3)Faber, H.Forage Crops in Denmark (1920). Longmans, Green & Co., London.Google Scholar
(4)Fisher, R. A.Statistical Methods for Research Workers (1925). Oliver & Boyd, London.Google Scholar
(5)Fruwirth, C.Handbuch der landw. Pflanz. (1922), Band II, Berlin.Google Scholar
(6)Haberlandt, G.Physiological Plant Anatomy (1924). (Transl. by Drummond, M.) Macmillan & Co., London.Google Scholar
(7)Hendrick, J.The composition of turnips and swedes. Trans. Highland and Agric. Soc. Scot. (1906), 23.Google Scholar
(8)Kristensen, R. K.Tørstofbestemmelse i Roer. Tidssk.f. Planteavl. (1911), 18, København.Google Scholar
(9)Percival, J.Agricultural Botany (1926). Duckworth & Co., London.Google Scholar
(10)Robb, W. and Wishart, R.The improvement of the feeding value of Swedes and Turnips (1915). (Pamphlet.) Univ. Press, St Andrews.Google Scholar
(11)Sansome, F. W.Dry matter of Swedes, I. J. Agric. Sci. (1926), 16, 51.Google Scholar
(12)Wood, T. B., and Berry, R. A.Selection of seed by chemical methods. Proc. Camb. Phil. Soc. (1902–1904), 12.Google Scholar
(13)Wood, T. B., and Berry, R. A.Variation in chemical composition of mangels. J. Agric. Sci. (1905–1906), 1, 176.CrossRefGoogle Scholar