. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). The Cornell Reading-Courses PUBLISHED BY THE NEW YORK STATE COLLlSGE OF AGRICULTURE AT CORNELL UNIVERSITY Entered as second-class matter at the post ofiQce at Ithaca, New York B. T. Galloway, Director A. R. Mann, General Editor COURSE FOR THE FARM, ROYAL GILKEY, Supervisor VOL. IV. No. 74 OCTOBER 15, 1914 THE SOIL SERIES No. I revised INTRODUCTION T
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). The Cornell Reading-Courses PUBLISHED BY THE NEW YORK STATE COLLlSGE OF AGRICULTURE AT CORNELL UNIVERSITY Entered as second-class matter at the post ofiQce at Ithaca, New York B. T. Galloway, Director A. R. Mann, General Editor COURSE FOR THE FARM, ROYAL GILKEY, Supervisor VOL. IV. No. 74 OCTOBER 15, 1914 THE SOIL SERIES No. I revised INTRODUCTION TO THE PRINCIPLES OF SOIL FERTILITY Elmer 0. Pippin This lesson is the first of a series deaUng with the maintenance of a proper physical condition and adequate productiveness of the soil. It points out the primary means by which soils are made productive, and outlines and introduces the discussion of the various factors by which this is accomplished. MAINTENANCE OF FERTILITY OP THE SOIL The most fundamental prob- lem in agriculture is the main- tenance and increase of the productive capacity of the soil. All important forms of plant as well as of animal life depend on the soil for the ultimate supply of material necessary to their growth. The materials that come from the soil are the most likely to become the limiting factors in crop production. Therefore the great problem identified with agricul- ture, and ultimately vv, 11 i^v, ? A -^^ ^^^- I-— ^^^^ diagram represents the essential factors in a witn au otner maustry, j^^^^^ ^^-^ ^^ ^^^ ^^^^^ ^^ .^,;„-^;j ^^^^y should be adjusted, he- is the maintenance of ginning at the base. 'It also calls attention to the primary adequate productive- ^'''''''''' ^^ ""^''^ '^'' essential factors are controlled jiess of the soil, commonly considered tmder the head of soil fertility,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appeara
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