Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-23T02:21:47.046Z Has data issue: false hasContentIssue false
  • English
  • Français

Changes in the composition of guano during storage

Published online by Cambridge University Press:  27 March 2009

P. R. v. d. R. Copeman  and
F. J. Dillman
P. R. v. d. R. Copeman
Affiliation:
The Goverment Chemical Laboratories, Johannesburg
F. J. Dillman
Affiliation:
The Goverment Chemical Laboratories, Johannesburg
Get access Rights & Permissions [Opens in a new window]

Extract

The term “guano” is applied almost wholly to the excrement of sea-birds and, since it contains a high proportion of nitrogen and phosphorus, guano forms a very valuable fertilizing material. The Union of South Africa has a large number of small islands scattered round the coast which are used as breeding grounds by various sea-birds. The deposits of guano from different islands vary considerably and are therefore systematically mixed to obtain an approximately uniform grade of material. The average analytical results for the years 1921–8 were: 10·0 per cent nitrogen, 11·2 per cent phosphoric oxide, 2·0 per cent potash.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 27 , Issue 2 , April 1937 , pp. 178 - 187
Copyright
Copyright © Cambridge University Press 1937

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)Fisher, R. A.Statistical Methods for Research Workers. London.Google Scholar
(2)International Critical Tables, 4.Google Scholar
(3)Shimoda, J. Biochem., Tokyo (1928), 9, 117 (thro. Chem. Abstr. 1929, 168).CrossRefGoogle Scholar
(4)Truszkowski, R.Biochem. J. (1930), 24, 1340, 1349, 1359.Google Scholar
(5)Woodman, H. E.J. agric. Sci. (1924), 14, 413.CrossRefGoogle Scholar