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Chapter 3. Tillage

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Published in Advances in Soil Dynamics Volume 3 Chapter 3, Parts I & II, pp273-359 (Copyright 2009 American Society of Agricultural and Biological Engineers)  .(doi:10.13031/2013.26876)
Authors:   Shrini K. Upadhyaya, Pedro Andrade-Sanchez, Kenshi Sakai, William J. Chancellor, Richard J. Godwin
Keywords:   Part I. Tillage Mechanics, Passive Earth Pressure The-ory or Limit Equilibrium Analysis, Application of the Passive Earth Pressure Theory to Other Implements, Various Modes of Soil Failure, Part II. Development of Com-prehensive Tillage Force Prediction Spreadsheets, Part III. Finite Element Analysis of Soil-Tillage Tool Interaction, Part IV. Empirical Determination of Draft, Energy, and Soil Condition in Tillage Studies, The Nature of Forces Acting on Tillage Tools, Draft Prediction in Field Studies, Extracting Soil Information from the Measurement of Draft Forces, Part V. Nonlinear Dynamics in Tillage Studies, Auto-Regressive Error Distribution Function: Soil Cutting Forces, Correlation Dimension: Nonlinear Time Series Analysis on Vibrations of Tractor-Implement Systems.

ABSTRACT [First paragraph]: Gill and Vanden Berg (1968) defined tillage as a process aimed at creating a desired final soil condition from some initial soil condi-tion through manipulation of soil. For thousands of years humans have been tilling soil using some sort of mechanical devices to create that desired soil condition to in-crease crop production (McKyes, 1985). About 3000 years ago inhabitants of the Eu-phrates and Nile valleys used simple wedge-shaped plows for tilling soil. Iron plows were used in China more than 2000 years ago. In early 1700 A. D. plows similar to the ones used today appeared in parts of Europe. The first tempered cast iron plow was patented in 1785 (by Robert Ransome of Norwich, England). John Deere devel-oped a steel plow with a share and a moldboard in the 1830s. Although some changes in the geometric shape have taken place since the 1930s, the moldboard plow has re-mained virtually unchanged since that time..

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