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Effects of sulphur fertilizers and of copper on the yield and composition of spring wheat grown in an sandy soil prone to surface compaction

Published online by Cambridge University Press:  27 March 2009

J. Bolton
J. Bolton
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
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Summary

A condition known as ‘scorch” with symptoms similar to copper deficiency often occurs in dry weather on cereals grown on a sandy soil (at Woburn) with an unstable structure. Plants with symptoms contained more sulphur than normal and sulphur/ copper interactions were suspected.

Sulphur fertilizers tested in two pot experiments with this soil did not induce copper deficienciesbut increased grain and straw yields of spring wheat especially at higher nitrogen rates. Yields were increased when the mature grain contained less than 0.12% S and the straw less than 0.5% Sin the dry matter. Sulphur concentrations were larger in plants grown in the greenhouse rather than in growth cabinets and in plants grown in oven-dried rather than air-dried soil.

Soil-applied copper sulphate slightly increased grain yields in pots but in one experiment there were no corresponding increases in copper contents of the crop. In a field experiment where ‘scorch’ symptoms occurred in 1972, copper oxychloride sprays increased copper concentrations but not yields of the grain.

These results suggest that copper deficiency is unlikely to be a primary cause of ‘scorch’ symptoms.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 84 , Issue 1 , February 1975 , pp. 159 - 165
Copyright
Copyright © Cambridge University Press 1975

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References

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