Abstract
THIS well-known text-book, first printed in 1929, has now been brought up to date. During the last nine years the subject has made great strides in its chemical, engineering, and agronomic aspects, and within the limits of a single book, it is only possible to touch lightly on some of these. The form of the book remains unaltered, but sections are added dealing with the inclusion of dolomite in fertilizer mixtures for use on acid soils ; the use of granular fertilizers; the addition of calcium sulphate to high analysis mixtures ; and the rapid methods of soil analysis for 'available nutrients' now being extensively used in the United States and elsewhere. A new chapter has been added on the minor elements in soils and crops, and examples of the necessity for the provision of traces of boron, copper, iron, magnesium, manganese and zinc are quoted, mainly from American sources.
Theory and Practice in the use of Fertilizers
Dr.
Firman E.
Bear
By. (Wiley Agricultural Series.) Second edition. Pp. ix + 360. (New York: John Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1938.) 20s. net.
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[Short Reviews]. Nature 142, 658 (1938). https://doi.org/10.1038/142658c0
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DOI: https://doi.org/10.1038/142658c0