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Side-placing urea and other nitrogen fertilizers for spring barley

Published online by Cambridge University Press:  27 March 2009

F. V. Widdowson ,
A. Penny  and
R. J. B. Williams
F. V. Widdowson
Affiliation:
Rothamsted Experimental Station
A. Penny
Affiliation:
Rothamsted Experimental Station
R. J. B. Williams
Affiliation:
Rothamsted Experimental Station
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Extract

1. Laboratory experiments compared alternative ways of placing urea for wheat. Urea greatly increased the pH in the seed-row; placed in contact with seeds, it killed many plants, but did not when placed 1 in. to the side of the seed.

2. A combine-drill was modified so that, by simple adjustments, fertilizers could be placed in contact with the seed, or at 1 in. to the side of the seed, or broadcast over the seed-bed.

3. Fifteen experiments with spring barley and one with spring wheat, made from 1960–62, compared yields from urea with yields from ammonium sulphate; calcium nitrate and sodium nitrate were tested in seven and in six experiments, respectively.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 62 , Issue 1 , February 1964 , pp. 73 - 82
Copyright
Copyright © Cambridge University Press 1964

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References

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