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A note on sampling technique for winter oil-seed rape (Brassica napus L.)

Published online by Cambridge University Press:  27 March 2009

D. H. Scarisbrick ,
A. Clewer  and
R. W. Daniels
D. H. Scarisbrick
Affiliation:
Wye College (University of London), Nr Ashford, Kent, TN25 5AH
A. Clewer
Affiliation:
Wye College (University of London), Nr Ashford, Kent, TN25 5AH
R. W. Daniels
Affiliation:
Wye College (University of London), Nr Ashford, Kent, TN25 5AH
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Extract

The response of three spring cultivars of oilseed rape to five levels of nitrogen fertilizer (0 to 200 kg/ha) was studied during 1978–9 (Scarisbrick, Daniels & Alcock, 1981). Sampling problems, practical difficulties of measuring yield components, and the high co-efficients of variation for these data were discussed. During the course of further investigations on the winter cultivar Jet Neuf (established on approximately 75000 ha in the U. K. during 1980–1) within-plot variability for plant weight was assessed in order to indicate the size of sample necessary to compare treatment means.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 99 , Issue 1 , August 1982 , pp. 225 - 227
Copyright
Copyright © Cambridge University Press 1982

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References

REFERENCES

Ogunremi, E. A. (1970). The influence of varieties, fertilizers and sowing dates on the growth and yield of oilseed rape. Ph. D. thesis, University of Nottingham.Google Scholar
Scarisbrick, D. H., Daniels, R. W. & Alcock, M. (1981). The effect of sowing date on the yield and yield components of spring oil-seed rape. Journal of Agricultural Science, Cambridge 97, 189–195.CrossRefGoogle Scholar
Snedecor, G. & Cochran, W. (1956). Statistical Methods, 5th edition. Iowa State University Press.Google Scholar