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Author: Amer Khalid Ahmed Al-Neama
Publisher: Springer
ISBN: 3662577445
Category : Technology & Engineering
Languages : en
Pages : 102
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Book Description
This book examines and evaluates the performance of four standard chisel plough tines: heavy duty, double heart, double heart with wings and duck foot, which were connected with a rigid shank. Experiments were conducted in a soil bin filled with sandy loamy soil, and the experimental factors included varying operation conditions (speed and depth) and their dependency upon a draft force and their components (horizontal and vertical force), specific force (force per unit area), specific power (power per unit area), soil loosening percentage (above and below the original soil surface) and soil profile parameters (e.g. furrow height, furrow width, ridge height, area of ridge and furrow etc.). The evaluation involved developing regression equations based on Glancey and Upadhyaya’s model by adding new terms related to the tine geometric parameters or by adding a dummy term variable. These two techniques made up the general study parameters and had the same trend effect on operation conditions to compare between tines. Lab results such as force components and the width of furrow were verified in a field test. Furthermore, a model to predict the draft force by using principles of soil mechanics and soil profile evaluation was designed.
Author: Amer Khalid Ahmed Al-Neama
Publisher: Springer
ISBN: 3662577445
Category : Technology & Engineering
Languages : en
Pages : 102
Get Book
Book Description
This book examines and evaluates the performance of four standard chisel plough tines: heavy duty, double heart, double heart with wings and duck foot, which were connected with a rigid shank. Experiments were conducted in a soil bin filled with sandy loamy soil, and the experimental factors included varying operation conditions (speed and depth) and their dependency upon a draft force and their components (horizontal and vertical force), specific force (force per unit area), specific power (power per unit area), soil loosening percentage (above and below the original soil surface) and soil profile parameters (e.g. furrow height, furrow width, ridge height, area of ridge and furrow etc.). The evaluation involved developing regression equations based on Glancey and Upadhyaya’s model by adding new terms related to the tine geometric parameters or by adding a dummy term variable. These two techniques made up the general study parameters and had the same trend effect on operation conditions to compare between tines. Lab results such as force components and the width of furrow were verified in a field test. Furthermore, a model to predict the draft force by using principles of soil mechanics and soil profile evaluation was designed.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309304873
Category : Nature
Languages : en
Pages : 56
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Book Description
Summary of a Workshop on Mississippi River Water Quality Science and Interstate Collaboration summarizes presentations and discussions of Mississippi River and basin water quality management, monitoring, and evaluation programs that took place at a workshop that was held in St. Louis on November 18-19, 2013. The workshop examined a wide array of challenges and progress in water quality monitoring and evaluation in states along the Mississippi River corridor, and provided a forum for experts from U.S. federal agencies, the Mississippi River states, nongovernmental organizations, and the private sector to share and compare monitoring and evaluation experiences from their respective organizations.
Author:
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Category : Hydrology
Languages : en
Pages : 898
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Category : Agriculture
Languages : en
Pages : 710
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Author:
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Category : Agricultural machinery
Languages : en
Pages : 640
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Author: International Service for Agricultural Research
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 140
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Author:
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Category :
Languages : en
Pages : 64
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Author:
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Category :
Languages : en
Pages : 1128
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Author:
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Category : Water
Languages : en
Pages : 1194
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Author: United States. Congress. Senate. Committee on Appropriations. Subcommittee on Agriculture, Rural Development, and Related Agencies
Publisher:
ISBN:
Category : Rural development
Languages : en
Pages : 636
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