Investigations on soil nitrogen I The influence of nitrogen fertilizers and rainfall on soil nitrate concentrations

A - Papers appearing in refereed journals

Cooke, G. W., Bates, J. A. R. and Tinker, P. B. 1957. Investigations on soil nitrogen I The influence of nitrogen fertilizers and rainfall on soil nitrate concentrations. Journal of the Science of Food and Agriculture. 8 (4), pp. 248-252.

AuthorsCooke, G. W., Bates, J. A. R. and Tinker, P. B.
Abstract

Abstract Changes in the concentration of nitrate in soils taken during field experiments on cereals were followed for two months in Spring, 1955. At centres where nitrogen fertilizer increased yields of wheat and barley, soil nitrate at planting did not exceed 7 p.p.m. of N; in two experiments where the crops did not respond to fertilizer nitrogen there were 10 p.p.m. or more of nitrate present. Soil nitrate levels were markedly increased by additions of calcium nitrate and to a lesser extent by ammonium sulphate. Light rainfall which did not percolate deeply into the soil did not reduce nitrate concentrations seriously in the surface layers, but nitrate was reduced to very low levels at all centres by rain which percolated through 20 in. of soil.

Year of Publication1957
JournalJournal of the Science of Food and Agriculture
Journal citation8 (4), pp. 248-252
Digital Object Identifier (DOI)doi:10.1002/jsfa.2740080411
ISSN00225142
0022-5142
PublisherJohn Wiley & Sons, Ltd

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