. 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 Soil: Its Use and Abuse 1355 and thorough knowledge of all the processes and operations involved in producing crops from the soil than is possible by the older " rule of thumb " method. So broad are the relationships of good soil management that no person may properly claim the right to be exempt from a certain fun- damental knowledge
. 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 Soil: Its Use and Abuse 1355 and thorough knowledge of all the processes and operations involved in producing crops from the soil than is possible by the older " rule of thumb " method. So broad are the relationships of good soil management that no person may properly claim the right to be exempt from a certain fun- damental knowledge of the soil and its conservation, however far he may be removed professionally. THE NATURE OF THE SOIL The soil material — the superficial area of the earth — is so thin as to be infinitesimal in thickness when compared with the diameter of the earth. We commonly define the soil as the surface area of the earth's crust that. Fig. 3.— The water from the melting of ice at the front of a glacier carries away and sorts the rock materials and deposits them along its course, later to serve as soil. Much of the land along the lakes and through the valleys in New York has been formed in this way is capable of supporting plant growth. The growth that it will support may be ever so simple, as in the case of a few bacteria on some rock clifif, or it may be a tall field of corn on a rich river plain, or a dense forest of trees on a fertile plateau. We include in the soil all the material to the depth to which plant roots are able to distribute themselves. It therefore includes a wide range of material in depth and character. It may be deep or shallow, coarse or fine, loose or compact, light or dark, wet or dry. It is all soil because it is a medium for the growth of some kind of plant. In general, the soil may be divided into two classes of material: (a) the particles of mineral and fragments of rock, and (b) bits of organic matter of both plant and animal origin that have become mor
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