Download or read book A Model for Evaluating Irrigation induced Water Quality Problems in Irrigation and Drainage Systems written by H.B. Manguerra and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Irrigation induced Salinity written by Dina L. Umali and published by World Bank Publications. This book was released on 1993-01-01 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a synthesis of 15 success stories in the production, processing, and marketing of high-value food products (HVF) in developing countries in Asia, Latin America, and Africa. High-value food products, such as fresh and processed fruits and vegetables, meats, fish, dairy products, and vegetable oils, are defined as having high intrinsic value or a high rate of value added through processing. Trade in these products has expanded while trade and prices for other agricultural products, such as most staple crops, have stagnated or declined. The growing trade in HVF has prompted policymakers in developing countries to examine more closely how they can expand and diversify their exports of these products. This study explores the technical, organizational, and commercial challenges facing those in HVF export development. It identifies common market and institutional factors that have contributed to the growth and international competitiveness in HVF trade. Particular note is made of the roles of the private and public sectors and of the effect of the policy environment. It examines the effect of institutional coordination on the stages of production, processing, and trade. An annex summarizes 12 case studies of the development and performance of food commodity markets. It includes export of fresh vegetables from Kenya in the 1960s, shrimp from Thailand in the 1970s, and processed tomatoes from Chile in the 1980s.

Download or read book Water Quality for Agriculture written by R. S. Ayers and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Richtlijnen voor de werker in het veld om problemen te ondervangen ten aanzien van de waterkwaliteit voor irrigatie-doeleinden. Tenslotte worden praktijkervaringen uit diverse gebieden vermeld

Download or read book Guideline for Salinity Assessment Mitigation and Adaptation Using Nuclear and Related Techniques written by Mohammad Zaman and published by Springer. This book was released on 2018-11-28 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book is an outcome of the collaboration between the Soil and Water Management & Crop Nutrition Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), Vienna, Austria, and Dr. Shabbir A Shahid, Senior Salinity Management Expert, Freelancer based in United Arab Emirates.The objective of this book is to develop protocols for salinity and sodicity assessment and develop mitigation and adaptation measures to use saline and sodic soils sustainably. The focus is on important issues related to salinity and sodicity and to describe these in an easy and user friendly way. The information has been compiled from the latest published literature and from the authors’ publications specific to the subject matter. The book consists of six chapters. Chapter 1 introduces the terms salinity and sodicity and describes various salinity classification systems commonly used around the world. Chapter 2 reviews global distribution of salinization and socioeconomic aspects related to salinity and crop production. Chapters 3 covers comprehensively salinity and sodicity adaptation and mitigation options including physical, chemical, hydrological and biological methods. Chapter 4 discusses the efforts that have been made to demonstrate the development of soil salinity zones under different irrigation systems. Chapter 5 discusses the quality of irrigation water, boron toxicity and relative tolerance to boron, the effects of chlorides on crops. Chapter 6 introduces the role of nuclear techniques in saline agriculture.

Download or read book Irrigation Induced Water Quality Problems written by National Research Council and published by National Academies Press. This book was released on 1989-02-01 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: When waterfowl began to die from selenium poisoning at Kesterson National Wildlife Refuge in California's San Joaquin Valley, considerable alarm arose among environmental and agricultural specialists. This new volume suggests that Kesterson is not a unique problem and the events there offer important lessons for the future. Irrigation-Induced Water Quality Problems uses the San Joaquin experience to suggest how we can prepare for similar problems elsewhere. As one committee member put it, "There will be elsewheres"â€"trace elements and organic contaminants are being concentrated by irrigation in many river basins. This book addresses how the Kesterson crisis developed, how irrigation can endanger water quality, and how economic, legal, and other factors impede our ability to respond to water quality problems. The committee explores how to study these problems, unraveling complex issues and clarifying the varying perspectives of farmers, environmentalists, scientists, and other key figures. This dispassionate analysis of a controversial topic will be useful to policymakers, resource managers, and agricultural specialists and farmers, as well as specialists in hydrology, water quality, irrigation, law, and environmental quality. It will also be useful as a case study in the environmental policy classroom.

Download or read book Evaluation of a Hydrosalinity Model of Irrigation Return Flow Water Quality in the Mesilla Valley New Mexico written by L. W. Gelhar and published by . This book was released on 1979 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prediction Modeling for Salinity Control in Irrigation Return Flows written by Arthur G. Hornsby and published by . This book was released on 1973 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Models for Water Resources Management Planning and Policy written by United States. Congress. Office of Technology Assessment and published by . This book was released on 1982 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mathematical Programming Model to Evaluate the Impact of Water Quality Degradation on a Regional Agricultural Economy written by Philippe Mean and published by . This book was released on 1981 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory Modeling and Experience in the Management of Nonpoint Source Pollution written by Clifford S. Russell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonpoint-source pollution (NPSP) poses a special challenge to society's ability to manage its collective environmental good - especially surface and groundwater quality. Since there is no `point', such as an outfall pipe, from which the pollution is being discharged and can be measured, pollution can reach the ambient environment without being monitored. Since management of air and water polution requires the definition and enforcement of limits on discharges or the imposition of fees on those discharges, inability to measure limits our ability to manage this environmental problem. This book presents a state-of-the-art review and discussion of economists' efforts to resolve this major problem and attempts to provide a way of working around it. The book sets forth the theoretical issues, modeling, and the actual programs set up to confront this issue.

Download or read book Federal Ground water Science and Technology Programs written by and published by . This book was released on 1992 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Irrigated Soils written by David Wynne Thorne and published by Daya Books. This book was released on 2004-09 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most Of The Arable Soils Of Humid Temperate Areas Are Now Employed For Crop Production. With An Ever-Increasing Population, The World Is Again Rapidly Turning To The Further Development Of Irrigation In The Semi-Arid And Arid Lands Which Comprise Over Half Of The Earth S Land Surface. Today More Than Half Of The World S Population Is Dependent On Food Produced Under Irrigation. Authors Have Kept Constantly In Mind The Idea Of Integrated Plants Which Will Give Maximum Production On Irrigated Farms. In This Approach, Discussion Of Such Topics As Soil Water Relations, Salt, Alkali, Soil Physical Properties, Organic Matter, Crop Rotations, Fertilizers, And Irrigation Practice Have Been Directed Toward Recognizing The Solving Practical Farm Problems. The Emphasis On Farm Planning Throughout The Book Has Been Brought To A Final Conclusion With A New Chapter On Planning The Irrigated Farm. The Recent Rapid Expansion Of Irrigation In Humid Regions At First Thought Seems To Justify Special Treatment. But Further Consideration Indicates That The Same Fundamental Principles Are Involved Wherever Irrigation Is Practiced, Whether In Arid Or Humid Areas. The Salt Problem Seldom Occurs In Humid Regions And Liming Must Be Practiced, But Still The Underlying Principles Of Irrigation Agriculture Are The Same. In Preparing The Manuscript The Authors Have Sought To Emphasize Fundamental Principles That Underlie Soil Management Practices. Emphasis Is On Basic Principles Rather Than On Field Practices. The General Approach Is To Present First The Fundamental Principles And Second The Applications Of The Principles In Solving Individual Problems. The Authors Sought To Bring Together Viewpoints From Different Fields Of Investigation And To Harmonize Them Into An Integrated Presentation. For Example, In Soil Moisture Studies, Soil Scientists Have Customarily Dealt In Terms Of Physical Stresses Exerted On Moisture By Capillary Pull And Adsorption By Soil Particles; Plant Physiologists Have Been Concerned With Osmotic Stress Value Resulting From Salts Dissolved In Soil Or Culture Solutions. In Irrigation Agriculture, Both Concepts Are Vitally Important And Are Presented As A Unified Principle That Must Be Evaluated In Estimating The Water Relations Of Plants In Irrigated Soils. This Book Will Be Useful In College Dealing With Irrigation And The Management Of Irrigated Soils, But Also As A Reference Guide To Those Giving Technical Advice To Farmers On The Management Of Irrigated Soils. Contents Chapter 1: Problems Of Irrigated Regions, Early History Of Irrigation, Extent Of Irrigation In World Agriculture, Problems In Irrigation Agriculture, Bibliography; Chapter 2: Soil As A Medium For Plant Growth, Plant Roots, Soil Characteristics And Plant Growth, Soil Classification As A Key To Management Problems, Bibliography; Chapter 3: Soil And Water Relations, Moisture Retention By Soils, Methods Of Expressing The Tension Of Soil Water, Definitions Of Moisture Terms, Water Movement, Bibliography; Chapter 4: Soil Water, And Plant Relations, Water Availability In Soil, Range Of Available Moisture, Optimum Moisture Level, Water Requirements Of Crop Plants, Bibliography; Chapter 5: The Salt Problem, Classification Of Salted Soils, Plant Relations To Salted Soils, Bibliography; Chapter 6: Evaluating Land For Irrigation, Field Evaluation Of Land, Evaluation Of Salted Soils, Plant Food Reserves, Bibliography; Chapter 7: Source And Quality Of Irrigation Water, Importance Of Watershed Management, Water Rights, Quality Of Water, Changes In Water Quality, Soils In Relation To Water Quality, Improving The Quality Of Irrigation Water, Analysis Of Selected Irrigation Waters, Soil Changes Induced By Irrigation Water, Bibliography; Chapter 8: Measuring Irrigation Water, Units, Weirs, Other Measuring Devices, Bibliography; Chapter 9: Planning A Farm For Irrigation, Preparing The Farm For Irrigation, Farm Distribution Systems, Selecting An Irrigation Method, Methods Of Water Application, Planning Cropping Systems For Water Supplies, Bibliography; Chapter 10: Irrigation Practice, Quantity Of Water To Apply, Water Application Efficiency, Leaching Losses, When To Irrigate, Integration Of Irrigation With Other Management Practices, Bibliography; Chapter 11: Drainage, Planning A Drainage System, Depth And Spacing Of Drains, Types Of Drains, Design And Construction Of Drainage Systems, Surface Drainage, Bibliography; Chapter 12: Reclamation And Management Of Saline And Alkali Soils, Salt Balance, Reclamation Of Saline Soils, Reclamation Of Alkali Soils, Illustration Of Reclamation Procedures, Reclamation Of Soils Damaged By Sea Water, Management Of Saline And Alkali Soils, Bibliography; Chapter 13: Control Of The Physical Properties Of Soil, Soil Structure, Aeration, Permeability, Soil Temperature, Resistance To Erosion, Tillage For The Control Of Soil Physical Properties, Effect Of Plants On Physical Properties Of Soil, Organic Matter And Improved Physical Condition Of Soils, Chemical Treatment For Soil Improvement, Bibliography; Chapter 14: Control Of The Biological Properties Of Soil, Plant Disease Organisms In The Soil, Promotion Of Desirable Microbiological Activities, Denitrification, Effects Of Crops On Succeeding Crops, Crop Rotation, Planning Rotations, Bibliography; Chapter 15: Maintaining Organic Matter In Soil, Role Of Organic Matter In Soil Fertility, Principles Governing The Quantities Of Organic Matter In Soils, Activity Of Soil Organic Matter, Principles For Building And Maintaining Organic Matter Content, Green Manure Crops, Farm Manure, Artificial Manure And Composts, Crop Residues, Bibliography; Chapter 16: Minerals And Plant Growth, Non Essential Elements Of Interest In Plant Nutrition, Classification Of Essential Elements, Function Of The Essential Elements In Plant Growth, Availability Of Plant Nutrients, Bibliography; Chapter 17: Fertilizer Elements And Fertilizer Materials, Nitrogen, Phosphorus, Potassium, Bibliography; Chapter 18: Using Fertilizers, Guarantees And Regulations, Fertilizer Ratios, Compatibility Of Ingredients, Calculating Fertilizer Formulas, Estimating Fertilizer Values, Home Mixing, Selecting Fertilizers, When To Apply Fertilizer, Placement Of Fertilizer, Systems Of Fertilizer Management, Bibliography; Chapter 19: Soil Management For General Field Crops, Sugar Cane, Sugar Beets, Potatoes, Corn, Cotton, Cereal Crops, Alfalfa And Clovers, Pastures, Rice, Bibliography; Chapter 20: Soil Management For Fruit, Vegetable And Specialty Crops, Fruit Crops, Vegetable Crops, Seed Crops, Lawns, Ornamentals, Bibliography; Chapter 21: Farm Planning, Making The Farm Map, Soil Map, Inventory And Evaluation Of Resources And Problems, Types Of Farming In Relation To Farm Plants, The Farm Layout, Adjusting Crops And Livestock, The Written Report, Bibliography.

Download or read book Department of the Interior and related agencies appropriations for 1991 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies and published by . This book was released on 1990 with total page 1468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Department of the Interior and Related Agencies Appropriations for 1991 Justification of the budget estimates Office of the Secretary written by United States. Congress. House. Committee on Appropriations. Subcommittee on Dept. of the Interior and Related Agencies and published by . This book was released on 1990 with total page 1456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Justification of the budget estimates Office of the Secretary written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies and published by . This book was released on 1990 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt: