Hostname: page-component-848d4c4894-hfldf Total loading time: 0 Render date: 2024-05-21T06:55:33.293Z Has data issue: false hasContentIssue false
  • English
  • Français

Edge and neighbour effects in cereal yield trials

Published online by Cambridge University Press:  27 March 2009

R. B. Austin  and
R. D. Blackwell
R. B. Austin
Affiliation:
Plant Breeding Institute, Trumpington, Cambridge
R. D. Blackwell
Affiliation:
Plant Breeding Institute, Trumpington, Cambridge
Get access Rights & Permissions [Opens in a new window]

Summary

In two field experiments with winter wheat varieties, the grain yields per unit area calculated from entire plots 4·2 × 1·18 m were 25% greater than the yields of the centre row. This occurred mainly because the outer rows in the plots yielded 62% more than the centre row. When the yields were calculated on the basis of a plot width of 1·53 m (the distance from path centre to path centre across the long axis of a plot), it was estimated that they were 4% less than the yields of the centre rows. In the most extreme case when a short variety in a plot of this size was bordered by neighbours 70 cm taller, its yield, relative to that of the tall variety, was underestimated by 10–12%.

A separate experiment showed that the greater yield from plants at the edges of plots was associated mainly with more ears.

Type
Short Notes
Information
The Journal of Agricultural Science , Volume 94 , Issue 3 , June 1980 , pp. 731 - 734
Copyright
Copyright © Cambridge University Press 1980

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

Austin, R. B., Bingham, J., Blackwell, R. D., Evans, L. T., Ford, M. A., Morgan, C. L. & Taylor, M. (1980). Genetic improvements in winter wheat yields since 1900 and associated physiological changes. Journal of Agricultural Science, Cambridge 94, 675–689.Google Scholar
Austin, R. B., Ford, M. A., Edrich, J. A. & Blackwell, R. D. (1977). The nitrogen economy of winter wheat. Journal of Agricultural Science, Cambridge 88, 159–167.CrossRefGoogle Scholar
Austin, R. B., Ford, M. A., Edrich, J. A. & Hooper, B. E. (1976). Some effects of leaf posture on photosynthesis and yield in wheat. Annals of Applied Biology 83, 425–446.Google Scholar
Fischer, R. A. (1978). Are your results confounded by intergenotypic competition? Proceedings of Vth International Wheat Genetics Symposium, New Delhi. (In the Press.)Google Scholar
Jensen, N. F. & Federer, W. T. (1964). Adjacent row competition in wheat. Crop Science 4, 641–645.Google Scholar
Widdowson, F. V. (1973). Results from experiments with wheat and barley measuring the effects of paths on yield. Experimental Husbandry 23, 16–20.Google Scholar