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What is agrobiology? (that question is answered); The indivisible kingdom of plants (in which the agrobiology is chiefly interested); Thinking it out (the method of approach is decided on); The first agrobiologists at work (all kinds of plants are scientifically interrogated); Setting up the scale of soil fertility (the zero and the Ioo-point are fixed); Graduating the scale of soil fertility (the points between o and Ioo are filled in); The fertility index (much simpler than one might think); Using the scale of soil fertility (a very important and practical matter); Sources of frustation (some interfering circumstances are identified); The agrobiology evaluation of water (the why, what, when and how of soil moisture); The stand of plants (wherein mass action enters the picture); The quantity of plant life (agrobiologists have a yardstick for that too); More about the formula 318/N (it indicates some wide possibilities); Looking at the limits (Nature is generous but men are mostly inept); Public soil science in the United States (what it is- and isn't); Review of the basal axions (the important principles are recapitulated); Agrobiologic equilibria or end- sates (nature is always arithmetical); Mathematical details (mainly for serious students).
A collection of 14 discussions of the past and present literature about soil science. The topics include a historical survey, bibliometrics, introduction into developing countries, societies and their publishing influence, information systems, core monographs, primary journals, maps, and other aspec
Includes Part 1, Number 2: Books and Pamphlets, Including Serials and Contributions to Periodicals July - December)