Studies on calcium cyanamide V The utilisation of calcium cyanamide in pot culture experiments

A - Papers appearing in refereed journals

Richardson, H. L. and Crowther, E. M. 1935. Studies on calcium cyanamide V The utilisation of calcium cyanamide in pot culture experiments. The Journal of Agricultural Science. 25 (1), pp. 132-150. https://doi.org/10.1017/S0021859600007681

AuthorsRichardson, H. L. and Crowther, E. M.
Abstract

1. In pot culture experiments with barley and mustard conducted in several soils over a number of years, the yield differences between calcium cyanamide and ammonium sulphate were generally small. Calcium cyanamide gave slightly poorer results than ammonium sulphate in soils with high responses to added nitrogen but definitely better ones in soils which contained much available nitrogen and in which calcium cyanamide greatly retarded nitrification.2. The pot culture experiments confirmed the conclusion from earlier laboratory work that in normal soils calcium cyanamide was converted through urea into ammonia within a few days. Nitrate accumulation was less complete and slower from calcium cyanamide than from ammonium sulphate. In one soil the nitrogen from calcium cyanamide remained as ammonia for several weeks, the nitrate content being below that even of unmanured soil.

Year of Publication1935
JournalThe Journal of Agricultural Science
Journal citation25 (1), pp. 132-150
Digital Object Identifier (DOI)https://doi.org/10.1017/S0021859600007681
Open accessPublished as non-open access
ISSN00218596
0021-8596
PublisherCambridge University Press
Cambridge University Press (CUP)

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