Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-25T06:53:18.909Z Has data issue: false hasContentIssue false
  • English
  • Français

Liquid manure as a grassland fertilizer: II. The response to winter applications

Published online by Cambridge University Press:  27 March 2009

A. D. Drysdale
A. D. Drysdale
Affiliation:
The Hannah Dairy Research Institute, Ayr
Get access Rights & Permissions [Opens in a new window]

Extract

1. The effect of applications of liquid manure during the winter months was studied and compared with the application of dry artificial fertilizers on six different swards in two experiments in each of the years 1960, 1961 and 1962.

2. The liquid manure supplied an average of 69 lb. N and 114 lb. K/acre at each application and plots received one dressing only applied in November, December, January, February or March. Further treatments consisted of applying conventional dry fertilizer supplying the same weight of nitrogen and potassium as the liquid manure and applied on the same day. A control plot received no added fertilizer or liquid manure.

3. All plots were cut in May and a second cut was made 8–10 weeks later to measure residual effects of treatments.

4. The maximum increase in dry-matter yields at cut 1 occurred with the February application although the January and March applications gave only slightly lower yields. The dry-matter yield/lb of N applied even from some November applications was comparable to the response obtained from applications of inorganic nitrogen made in summer in earlier experiments by other workers.

5. The production of crude-protein followed a similar pattern to that of the dry-matter, and the maximum increase was from the March application.

6. With similar rainfall conditions but different winter soil temperatures a mixture of Italian and perennial rye-grasses under average fertility conditions gave the highest response to liquid manure. This was followed by the later growing cocksfoot sward and the permanent pasture, on both of which yields were increased by all the monthly applications. The two swards containing grass and clover mixtures showed a response to the later dressings whereas a vigorous Italian rye-grass ley in the mild winter of 1961 was unaffected by treatment.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 61 , Issue 3 , November 1963 , pp. 353 - 360
Copyright
Copyright © Cambridge University Press 1963

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

Blackman, G. E. (1936). J. Agric. Sci. 26, 620.CrossRefGoogle Scholar
Castle, M. E. & Drysdale, A. D. (1962). J. Agric. Sci. 58, 165.CrossRefGoogle Scholar
Castle, M. E. & Holmes, W. (1960). J. Agric. Sci. 55, 251.CrossRefGoogle Scholar
Gisiger, L. (1950). J. Brit. Grassl. Soc. 5, 63.CrossRefGoogle Scholar
Gunhold, P. (1957). Z. Acker-u. PflBau, 102, 461.Google Scholar
Hendrick, J. (1915). Bull. N. Scot. Coll. Agric. no. 19.Google Scholar
Holmes, W. & MacLusky, D. S. (1955). J. Agric. Sci. 46, 267.CrossRefGoogle Scholar
Iversen, K. (1955). Tidsskr. Planteavl. 58, 574.Google Scholar
Rheinwald, H. (1934). Landw. Jb. 80, 161.Google Scholar
Schuppli, P. (1934). VerhBer. 3. Grünl. Kongr. Zurich, p. 291.Google Scholar
Seaks, P. D. & Newbold, R. P. (1942). N.Z. J. Sci. Tech. 24, 36 A.Google Scholar
Snedecor, G. W. (1946). Statistical Methods, 4th ed.Ames, Iowa: Iowa State College Press.Google ScholarPubMed
Walker, T. W. (1956). Proc. 7th Int. Grasal. Congr. New Zealand, p. 157.Google Scholar
Watkin, B. R. (1954). J. Brit. Grassl. Soc. 9, 35.CrossRefGoogle Scholar
Wheeler, J. L. (1958). J. Brit. Grassl. Soc. 13, 196.CrossRefGoogle Scholar