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Modern methods for experiments with fertilizers and manures

Published online by Cambridge University Press:  27 March 2009

John Sebelien
John Sebelien
Affiliation:
(The Chemical Laboratory of the Agricultural University, Aas, Norway.)
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Extract

Even an amateur in agricultural science will admit that nowadays the fertilising effect of a substance cannot be tested merely by adding the substance to the soil and inspecting the resulting crop. This is not an experiment, it may give rise to an observation, but not to a conclusion. The production of the crop is connected with the fertilising process as a post hoc, not as a propter hoc.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 10 , Issue 4 , October 1920 , pp. 415 - 419
Copyright
Copyright © Cambridge University Press 1920

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