Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-24T19:02:52.738Z Has data issue: false hasContentIssue false
  • English
  • Français

Edge effects on yield, yield components and other physiological characteristics in cereals and oilseed crops

Published online by Cambridge University Press:  27 March 2009

A. Hadjichristodoulou
A. Hadjichristodoulou
Affiliation:
Agricultural Research Institute, Nicosia, Cyprus
Get access Rights & Permissions [Opens in a new window]

Summary

The edge effect (calculated as the mean of the two outer rows as a percentage of the mean of the four central rows of 6-row plots) was measured in ten comparative trials conducted in Cyprus during 1987–90, with two cultivars each of rapeseed, safflower and sunflower, and one cultivar each of barley and durum wheat. Grain, straw and total biological yields obtained from the outer rows were usually higher than those obtained from the central rows by 1–384%. In one trial with sunflower, the grain yield of the outer rows was only 64% of that of the central rows, which could not be explained, considering all the other data. Differences in edge effects between species and trials were significant. Grain yield estimated from the central rows was on average 53% of that estimated from whole plots, and this varied with species and season. Therefore, in comparative trials, the outer rows should be removed before harvesting. There was no significant edge effect on the oil content of the oilseed crops. Edge effects on harvest index, volume weight, 1000-grain weight and nitrogen content were generally smaller than those on yield, and on average ranged from 100 to 113, thus the values computed from the outer rows were only 0–13% higher than from the central rows.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 120 , Issue 1 , February 1993 , pp. 7 - 12
Copyright
Copyright © Cambridge University Press 1993

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

Austin, R. B. & Blackwell, R. D. (1980). Edge and neighbour effects in cereal yield trials. Journal of Agricultural Science, Cambridge 94, 731–734.CrossRefGoogle Scholar
Bhalli, M. A., Day, A. D., Tucker, H., Thompson, R. K. & Massey, G. D. (1964). End-border in irrigated barley yield trials. Agronomy Journal 56, 346–348.CrossRefGoogle Scholar
Brown, C. M. & Weibel, R. O. (1957). Border effects in winter wheat and spring oat tests. Agronomy Journal 49, 382–384.CrossRefGoogle Scholar
Fischer, R. A. (1979). Are your results confounded by intergenotypic competition? In Proceedings of the Vth International Wheat Genetics Symposium, Volume 2 (Ed Indian Society of Genetics and Plant Breeding), pp. 767–777. New Delhi, India: Indian Agricultural Research Institute.Google Scholar
Hadjichristodoulou, A. (1983). Edge effects on yield, yield components and other traits in mechanized durum wheat and barley trials. Journal of Agricultural Science, Cambridge 101, 383–387.CrossRefGoogle Scholar
Hadjichristodoulou, A. (1987). Trials with winter-sown sunflower. Helta 10, 57–61.Google Scholar
Jensen, N. F. & Federer, W. T. (1964). Adjacent row competition in wheat. Crop Science 4, 641–645.CrossRefGoogle Scholar
Rich, P. A. (1973). Influence of cultivar, row spacing, and number of rows on yield of wheat plots. Agronomy Journal 65, 331–333.CrossRefGoogle Scholar