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Author: E. McKyes
Publisher: Elsevier
ISBN: 044460104X
Category : Technology & Engineering
Languages : en
Pages : 226
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Book Description
After giving a brief history of tillage practices and implements used throughout the world dating back to ancient times, this book goes on to describe the basic soil mechanics techniques needed to calculate the forces developed in soil by simple-shaped cutting tools. The methods of measuring soil mechanical properties, water pressure in soil and shear rate effects are touched upon. A review is given of two and three dimensional soil cutting mathematical mechanics models to predict soil cutting forces and soil volumes disturbed by cutting and tillage tools, as well as the state-of-the-art of soil loosening, structural rearrangement and plant growth as affected by tillage tools. The author also includes an introduction to the analysis of traction machines. There are many numerical examples of mechanical analyses and predictions worked out in the various sections of the book as well as numerous unsolved problems at the end of a number of the chapters. Written in a textbook style, this monograph is ideal for anyone wanting to learn modern techniques for the mechanical description of soil cutting and tillage forces and soil volumes disturbed. It also provides a reference for analytical formulae and calculated force forces. It will be of interest to universities and colleges worldwide which have Agricultural Engineering Programs, Civil and Mechanical Engineering schools which specialize in soil mechanics and construction machinery as well as to research stations worldwide with interests in soil tillage, soil physics etc.
Author: E. McKyes
Publisher: Elsevier
ISBN: 044460104X
Category : Technology & Engineering
Languages : en
Pages : 226
Get Book
Book Description
After giving a brief history of tillage practices and implements used throughout the world dating back to ancient times, this book goes on to describe the basic soil mechanics techniques needed to calculate the forces developed in soil by simple-shaped cutting tools. The methods of measuring soil mechanical properties, water pressure in soil and shear rate effects are touched upon. A review is given of two and three dimensional soil cutting mathematical mechanics models to predict soil cutting forces and soil volumes disturbed by cutting and tillage tools, as well as the state-of-the-art of soil loosening, structural rearrangement and plant growth as affected by tillage tools. The author also includes an introduction to the analysis of traction machines. There are many numerical examples of mechanical analyses and predictions worked out in the various sections of the book as well as numerous unsolved problems at the end of a number of the chapters. Written in a textbook style, this monograph is ideal for anyone wanting to learn modern techniques for the mechanical description of soil cutting and tillage forces and soil volumes disturbed. It also provides a reference for analytical formulae and calculated force forces. It will be of interest to universities and colleges worldwide which have Agricultural Engineering Programs, Civil and Mechanical Engineering schools which specialize in soil mechanics and construction machinery as well as to research stations worldwide with interests in soil tillage, soil physics etc.
Author:
Publisher:
ISBN: 9780444567239
Category :
Languages : en
Pages :
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Book Description
Author: E. McKyes
Publisher: Elsevier
ISBN: 0444601015
Category : Technology & Engineering
Languages : en
Pages : 305
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Book Description
This book provides an introduction to classical soil mechanics and foundation engineering, and applies these principles to agricultural engineering situations. Theoretical design formulae are given, plus tables and graphs dealing with bearing capacity factors, wall pressure factors, soil cutting numbers and soil mechanical properties. Many example problems of design and analysis are solved in the text, and there are unsolved problems given for each chapter. The text begins with descriptions of soil origins and classification systems, including agricultural classification schemes, and then introduces classical concepts of soil strength and strength measurement techniques in the laboratory and in the field. Soil mechanics is applied to the design of shallow foundations, and the design formulae as well as tables of bearing capacity factors for design use are provided. New research and design findings in the specialized area of tall and heavy farm silos are also given, in addition to deep pile foundation design for heavy structures on very soft soils. Water flow in soils is treated, together with stability of ditch bank slopes and small earth dams, design of retaining walls and pressure pressures in bins and silos, soil erosion and protection methods, soil cutting and tillage design methods, soil compaction analysis, the use of geotextiles and problems of soil freezing. The book is directed primarily at professional university students in Agricultural Engineering, but will also be of interest to scientists working in other engineering branches, landscape architecture, soil physics and the like.
Author: William R. Gill
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 524
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Book Description
Author: Andy Clark
Publisher: DIANE Publishing
ISBN: 1437903797
Category : Technology & Engineering
Languages : en
Pages : 248
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Book Description
Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
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: Athanasios P. Dedousis
Publisher: Springer Science & Business Media
ISBN: 3642036813
Category : Science
Languages : en
Pages : 234
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Book Description
The agricultural world has changed significantly during the last years. The excessive use of heavy machinery, waste disposal, the use of agrochemicals and new soil cultivation means led to severe problems, which agricultural engineers have to cope with in order to prevent soil from permanent irreversible damage. This Soil Biology volume will update readers on several cutting-edge aspects of sustainable soil engineering including topics such as: soil compaction, soil density increases, soil disturbance and soil fragmentation; soil tillage machineries and optimization of tillage tools; soil traffic and traction, effects of heavy agricultural machines, the use of robotics in agriculture and controlled traffic farming; mechanical weed control, the characterization of soil variability and the recycling of compost and biosolids in agricultural soils.
Author: Andrew Mefferd
Publisher: New Society Publishers
ISBN: 1550926772
Category : Technology & Engineering
Languages : en
Pages : 336
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Book Description
Learn how to use natural no-till systems to increase profitability, efficiency, carbon sequestration, and soil health on your small farm. The Organic No-Till Farming Revolution is the comprehensive farmer-developed roadmap showing how no-till lowers barriers to starting a small farm, reduces greenhouse gas emissions, increases efficiency and profitability, and promotes soil health. Farming without tilling has long been a goal of agriculture, yet tilling remains one of the most dominant paradigms; almost everyone does it. But tilling kills beneficial soil life, burns up organic matter, and releases carbon dioxide. If the ground could instead be prepared for planting without tilling, time and energy could be saved, soil organic matter increased, carbon sequestered, and dependence on machinery reduced. This hands-on manual offers: Why roller-crimper no-till methods don't work for most small farms A decision-making framework for the four no-till methods: occultation, solarization, organic mulches grown in place, and applied to beds Ideas for starting a no-till farm or transitioning a working farm A list of tools, supplies, and sources. This is the only manual of its kind, specifically written for natural and small-scale farmers who wish to expand or explore chemical-free, regenerative farming methods.
Author: Jesse Frost
Publisher: Chelsea Green Publishing
ISBN: 1645020274
Category : Technology & Engineering
Languages : en
Pages : 305
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Book Description
Principles and farm-tested practices for no-till market gardening--for healthier, more productive soil! From the host of the popular The No-Till Market Garden Podcast—heard around the world with nearly one million downloads! Discovering how to meet the soil’s needs is the key task for every market gardener. In this comprehensive guide, Farmer Jesse Frost shares all he has learned through experience and experimentation with no-till practices on his home farm in Kentucky and from interviews and visits with highly successful market gardeners in his role as host of The No-Till Market Garden Podcast. The Living Soil Handbook is centered around the three basic principles of no-till market gardening: Disturb the soil as little as possible Keep it covered as much as possible Keep it planted as much as possible. Farmer Jesse then guides readers in applying those principles to their own garden environment, with their own materials, to meet their own goals. Beginning with an exploration of the importance of photosynthesis to living soil, Jesse provides in-depth information on: Turning over beds Using compost and mulch Path management Incorporating biology, maintaining fertility Cover cropping Diversifying plantings through intercropping Production methods for seven major crops Throughout, the book emphasizes practical information on all the best tools and practices for growers who want to build their livelihood around maximizing the health of their soil. Farmer Jesse reminds growers that “as possible” is the mantra for protecting the living soil: disturb the soil as little as you possibly can in your context. He does not believe that growers should anguish over what does and does not qualify as “no-till.” If you are using a tool to promote soil life and biology, that’s the goal. Jesse’s goal with The Living Soil Handbook is to provide a comprehensive set of options, materials, and field-tested practices to inspire growers to design a soil-nurturing no-till system in their unique garden or farm ecosystem. "[A] practical, informative debut. . . .Gardeners interested in sustainable agriculture will find this a great place to start."—Publishers Weekly "Frost offers a comprehensive, science-based, sympathetic, wholly practical guide to soil building, that most critical factor in vegetable gardening for market growers and home gardeners alike. A gift to any vegetable plot that will keep on giving."—Booklist (starred review)
Author: Bryan O'Hara
Publisher: Chelsea Green Publishing
ISBN: 1603588531
Category : GARDENING
Languages : en
Pages : 273
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Book Description
"No-till farming is the new best practice for preventing soil erosion, building soil biology, and providing growing conditions for vibrant, healthy crops. But for organic vegetable farmers and gardeners-and any farmer who wants to avoid herbicide use-the seemingly insurmountable dilemma with no-till has been how to control weeds without cultivating. In this thorough, practical guide, expert organic farmer Bryan O'Hara provide the answers. O'Hara systemically describes the growing methods he developed and perfected during a multi-year transition of his Connecticut certified organic vegetable farm to a no-till system. O'Hara asserts that this flexible, nature-friendly agricultural methodology is critical to vegetable farming success both economically as well as to maintain the health of the soil and the farm ecosystem. His methodology has proven itself over years of cropping on his home farm, Tobacco Road Farm, as well as other farms in his region, often with stunning results in yields, quality, and profitability. In No-Till Intensive Vegetable Culture, O'Hara delves into the techniques he has experimented with and perfected in his 25 years of farming, including making and using compost, culturing and applying indigenous microorganisms to support soil biology, reduced tillage systems, no-till bed preparation techniques, seeding and transplanting methods, irrigation, use of fertilizers (including foliar feeds), pest and disease management, weed control, season extension, and harvest and storage techniques. O'Hara also explores the spiritual understanding of the nuances of the soil and a farm ecosystem and how that influences practical production decisions such as when to plant, water, and fertilize a crop. O'Hara goal is to pass on his knowledge to those who feel the impulse to make their livelihood in harmony with nature, requiring a relatively small land base of a few acres or less and little capital investment in mechanization. Home gardener and large-scale farmers will also find value in his methods. This manual will provides farmers with an advanced agricultural methodology not available in any other single book on organic vegetable production, a methodology that will allow farmers to continue to adapt to meet future challenges"--
