Productive Soils: The Fundamentals of Successful Soil Management and Profitable Crop Production; 235 Illustrations in the Text

Excerpt from Productive Soils: The Fundamentals of Successful Soil Management and Profitable Crop Production; 235 Illustrations in the Text

This course of study in the complete edition is designed to give it wide adaptation, to wit:

(a) It may serve as a farmers' ready reference, or as a practical guide in successful soil management.

(b) In college short courses, and normals, the whole course as it is planned may be given. The object of each student should be to master the fundamentals.

(c) In college long courses, this text in the hand of the first- or second-year student may supply him with the fundamentals, leaving the lecture hour free to the instructor for elaboration, for application of facts and principles to local conditions, and for the presentation and discussion of experimental and research data.

The subject of Soil Management and Crop Production is truly large enough and of sufficient importance to be given a place in every agricultural curriculum. This subject should precede or may be given at the same time as the allied subject, Farm Crops. The latter subject could then be made a study, not so much of soils in relation to growing the crops, but rather of crop characteristics, crop importance, types, varieties, judging of grains, seed production, special cultural methods, harvesting, and care of crops and grains.

At the close of each chapter suggestions are offered for demonstrations, laboratory exercises, and for home experiments and projects. Many questions and practical problems are also given.

The author wishes to express his appreciation to Prof. E. Truog of the Department of Soils, and to Prof. J. A. James of the Department of Agricultural Education, University of Wisconsin, for careful reading and approval of the manuscript; to Prof. E. R. Jones, University of Wisconsin, for verifying the chapters on water relations and drainage; to Prof. C. F. Marbut, in charge of soil survey, Bureau of Soils, United States Department of Agriculture, for valuable suggestions concerning soil types and for approval of that part of Chapter II relating to that subject.

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