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Author: Gary John Clark
Publisher:
ISBN:
Category : Clay soils
Languages : en
Pages : 179
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Book Description
This was attributed to less decomposition of the wheat stubble, in comparison to the lucerne, resulting in a higher content of soil carbon. A further field study investigated the residual effects, after 3 seasons of crop production, of subsoil amelioration, with organic amendments, on the shoot growth, soil water-use and grain yield. In addition, soil structural changes were assessed in relation to the spatial pattern of samples, either being directly beneath a canola plant or away from the plant. Improved shoot growth and up to a 30% increase in grain yield was found in the organic treatments. Macroaggregate stability was found to be highest in the organic treatments. Furthermore, the presence of canola plants also contributed to a positive increase in macroaggregates. In conclusion, this thesis has demonstrated that the addition of organic amendments, or root growth, can improve the structure of sodic clay subsoil. Primarily, this is achieved through the stimulation of the soil microbial activity.
Author: Gary John Clark
Publisher:
ISBN:
Category : Clay soils
Languages : en
Pages : 179
Get Book Here
Book Description
This was attributed to less decomposition of the wheat stubble, in comparison to the lucerne, resulting in a higher content of soil carbon. A further field study investigated the residual effects, after 3 seasons of crop production, of subsoil amelioration, with organic amendments, on the shoot growth, soil water-use and grain yield. In addition, soil structural changes were assessed in relation to the spatial pattern of samples, either being directly beneath a canola plant or away from the plant. Improved shoot growth and up to a 30% increase in grain yield was found in the organic treatments. Macroaggregate stability was found to be highest in the organic treatments. Furthermore, the presence of canola plants also contributed to a positive increase in macroaggregates. In conclusion, this thesis has demonstrated that the addition of organic amendments, or root growth, can improve the structure of sodic clay subsoil. Primarily, this is achieved through the stimulation of the soil microbial activity.
Author: Nanthi Bolan
Publisher: CRC Press
ISBN: 1000879275
Category : Science
Languages : en
Pages : 635
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Book Description
Identifying, interpreting, and managing soil constraints are major challenges, especially when multiple constraints occur in the same soil at various depth zones. Although amelioration tools and strategies are available to manage some of these constraints, field adoption of these technologies is a major challenge to the farming community. Soil Constraints and Productivity helps in identifying and understanding soil constraints, focusing on management practices to alleviate problems associated with these restrictions, and their impacts on crop productivity. Soil Constraints and Productivity aims to: Describe various strategies suitable for mitigating soil constraints Provide data on cost-benefit analysis of managing soil constraints Provide case studies of managing soil constraints to increase productivity Soil is essential for the doubling of major grain production proposed to be necessary to avoid major food security collapses in the future. This book will be a key resource for soil and environmental scientists, farmers, students majoring in agricultural and environmental sciences, and crop consultants.
Author: Teogenes Senna de Oliveira
Publisher: Springer Nature
ISBN: 3031003179
Category : Technology & Engineering
Languages : en
Pages : 453
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Book Description
This book will address the major subsoil physical and chemical constraints and their implications to crop production; Plant growth is often restricted by adverse physical and chemical properties of subsoils yet these limitations are not revealed by testing surface soils and hence their significance in crop management is often overlooked. The major constraints can be physical or chemical. Physical limitations such as poor/nil subsoil structure, sandy subsoils that do not provide adequate water or gravelly subsoils and, etc. On the other hand, chemical constraints include acidity/alkalinity, high extractable Al or Mn, low nutrient availability, salts, boron toxicity and pyritic subsoils. Some of these constraints are inherent properties of the soil profile while others are induced by crop and soil management practices. This aim of this book is to define the constraints and discuss amelioration practices and benefits for crop production. This book will be of interest to readers involved with agriculture and soil sciences in laboratory, applied or classroom settings.
Author:
Publisher: Food & Agriculture Org.
ISBN: 9789251044292
Category : Business & Economics
Languages : en
Pages : 130
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Book Description
This publication provides an overview of the world's land resources characteristics, their status and limitations at a global, regional and national level. The statistics given include data on soil, climate and terrain characteristics and constraints, human-induced land degradation status and desertification risk. A comparative analysis of national land resource potential is included. A link is made between the land resource limitations and the population affected.
Author: Zed Rengel
Publisher: John Wiley & Sons
ISBN: 081381989X
Category : Science
Languages : en
Pages : 322
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Book Description
Improving Water and Nutrient Use Efficiency in Food Production Systems provides professionals, students, and policy makers with an in-depth view of various aspects of water and nutrient us in crop production. The book covers topics related to global economic, political, and social issues related to food production and distribution, describes various strategies and mechanisms that increase water and nutrient use efficiency, and review te curren situation and potential improvements in major food-producing systems on each continent. The book also deals with problems experienced by developed countries separtaely from problems facing developing countries. Improving Water and Nutrient Use Efficiency emphasizes judicious water and nutrient management which is aimed at maximising water and nutrient utilisation in the agricultural landscape, and minimising undesirable nutrient losses to the environment.
Author: Bobby A. Stewart
Publisher: CRC Press
ISBN: 9781566700207
Category : Technology & Engineering
Languages : en
Pages : 260
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Book Description
The principles and practice of deep tillage techniques have often failed to provide long-term, sustainable improvements of the soil for crop production. The book reviews alternative approaches to overcoming subsoil problems. These approaches involve reduced disturbance of the soil, but still provide substantial and sustainable soil improvements. Chapters 1 through 4 discuss the use of minimum tillage, bed farming, mole drainage, and slotting to overcome adverse subsoil conditions. Chapter 5 examines the options available for management of subsoil acidity. The next chapter provides an understanding of the processes involved in stress transmission and compaction under farm trafficking. The last chapter explains the critical role of soil microorganisms in providing long-term biological stabilization and improvements of soil. This reference brings together the latest research information on these subsoil amelioration techniques.
Author: Yash Dang
Publisher: Cambridge Scholars Publishing
ISBN: 152758707X
Category : Business & Economics
Languages : en
Pages : 611
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Book Description
Globally, over two thirds of soils are affected by physical, chemical, or biological soil constraints. These constraints cause significant yield loss, and, as such, identifying appropriate management strategies is crucial to ensure future world food production. In order to help agricultural researchers and practitioners better understand soil constraint management, this book comprehensively outlines the occurrence of the major soil constraints and the most appropriate strategies to manage these for sustainable food production. Importantly, it brings together experts from major agricultural regions globally to highlight approaches with the most success in different environmental and socioeconomic regions worldwide.
Author: Rattan Lal
Publisher: CRC Press
ISBN: 1439850801
Category : Nature
Languages : en
Pages : 594
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Book Description
Crop water use can be increased by management of surface runoff, groundwater, irrigation, and soil water. Technological innovations to enhance availability of water for agricultural crops depend on soil and site-specific conditions. Devoted to the principles and practices of enhancing water use efficiency, Soil Water and Agronomic Productivity addr
Author: CIMMYT Economics Program
Publisher: CIMMYT
ISBN: 9686127186
Category : Agricultural innovations
Languages : en
Pages : 84
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Book Description
Author: Brian D. Fath
Publisher: CRC Press
ISBN: 1000067742
Category : Law
Languages : en
Pages : 665
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Book Description
Bringing together a wealth of knowledge, Environmental Management Handbook, Second Edition, gives a comprehensive overview of environmental problems, their sources, their assessment, and their solutions. Through in-depth entries and a topical table of contents, readers will quickly find answers to questions about environmental problems and their corresponding management issues. This six-volume set is a reimagining of the award-winning Encyclopedia of Environmental Management, published in 2013, and features insights from more than 400 contributors, all experts in their field. The experience, evidence, methods, and models used in studying environmental management are presented here in six stand-alone volumes, arranged along the major environmental systems. Features The first handbook that demonstrates the key processes and provisions for enhancing environmental management Addresses new and cutting-edge topics on ecosystem services, resilience, sustainability, food–energy–water nexus, socio-ecological systems, and more Provides an excellent basic knowledge on environmental systems, explains how these systems function, and offers strategies on how to best manage them Includes the most important problems and solutions facing environmental management today In this third volume, Managing Soils and Terrestrial Systems, the general concepts and processes of the geosphere with its related soil and terrestrial systems are introduced. It explains how these systems function and provides strategies on how to best manage them. It serves as an excellent resource for finding basic knowledge on the geosphere systems and includes important problems and solutions that environmental managers face today. This book practically demonstrates the key processes, methods, and models used in studying environmental management.
