Download or read book Subsoil Constraints for Crop Production written by Teogenes Senna de Oliveira and published by Springer Nature. This book was released on 2022-08-03 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Subsoil Constraints to Crop Production in North eastern Australia written by and published by . This book was released on 2004 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Constraints on Crop Production written by Yash Dang and published by Cambridge Scholars Publishing. This book was released on 2022-08-19 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Soil Constraints and Productivity written by Nanthi Bolan and published by CRC Press. This book was released on 2023-05-29 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Managing Subsoil Constraints for Increased Productivity and Water Use Efficiency written by Gary John Clark and published by . This book was released on 2010 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Soil Constraints on Crop Production written by Yash Dang and published by . This book was released on 2023-06-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Subsoil Management Techniques written by Bobby A. Stewart and published by CRC Press. This book was released on 1994-10-12 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Proceedings of the 10th International Barley Genetics Symposium Alexandria Egypt 5 10 Apr 2008 written by and published by ICARDA. This book was released on with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Australian Journal of Experimental Agriculture written by and published by . This book was released on 2007 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Challenges and Strategies of Dryland Agriculture written by S.C. Rao and published by Scientific Publishers. This book was released on 2011-01-01 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world has made remarkable progress in maintaining adequate food supplies during the past quarter century by introducing yield-increasing technologies such as better genetics, crop protection products, and more efficient use of fertilizers and irrigations. Far more people depend on irrigation in the modern world than during the times of ancient Sumeria. The spread of irrigation has been the key factor in increasing global crop yields. But future scarcity present the single biggest threat to future food production. The shift of water from agriculture to the growing cities and industry almost certainly will impact global food production. This means that dryland agriculture will be increasingly important in meeting food requirement for the growing population. Advaces in plant genetics and agronomic conservation technologies, when considered in concert, continue to provide the greatest opportunities to achieve sustainability and profitability in dryland agriculture and will continue to be the focus of the ARS research program. The ARS is please to join the crop Science Society of America and international center for Agriculture Research in Dry Areas (ICARDA) in sponsoring a symposium “Challenges and strategies for Dryland Agriculture” at the Trisocieties Annual Meeting in November 2002 at Indianapolis, IN. This special publication contains an impressive series of paper by international group of experts on dryland agricultural production, conservation, and policy. The principles, philosophies, and technologies presented in this publication have the potential to contribute to improve food security and livelihoods for the people in dryland regions of the world.

Download or read book Climate Resilient Agriculture Vol 1 written by Mirza Hasanuzzaman and published by Springer Nature. This book was released on 2023-11-09 with total page 1015 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under ongoing climate change, natural and cultivated habitats of major food crops are being continuously disturbed. Such condition accelerates to impose stress effects like abiotic and biotic stressors. Drought, salinity, flood, cold, heat, heavy metals, metalloids, oxidants, irradiation etc. are important abiotic stresses; and diseases and infections caused by plant pathogens viz. fungal agents, bacteria and viruses are major biotic stresses. As a result, these harsh environments affect crop productivity and its biology in multiple complex paradigms. As stresses become the limiting factors for agricultural productivity and exert detrimental role on growth and yield of the crops, scientists and researchers are challenged to maintain global food security for a rising world population. This two-volume work highlights the fast-moving agricultural research on crop improvement through the stress mitigation strategies, with specific focuses on crop biology and their response to climatic instabilities. Together with "Climate Resilient Agriculture, Vol 2: Agro-Biotechnological Advancement for Crop Production", it covers a wide range of topics under environmental challenges, agronomy and agriculture processes, and biotechnological approaches, uniquely suitable for scientists, researchers and students working in the fields of agriculture, plant science, environmental biology and biotechnology.

Download or read book Effect of Subsoil Constraints on the Chemical Potential of Soil Potassium in a Catena in NSW Southern Tablelands written by Seija Tuomi and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil potassium (K) is of great agronomic importance to crop yield quality and quantity in Australia. A soil catena (toposequence) relates soil profiles at a functional scale, enabling interpretation of the landscape position effect on soil K, subsoil characteristics, soil horizon configurations and related patterns in soil chemical properties. The Fairview Farm soils have developed over a regionally extensive Siluro-Devonian felsic volcanic substrate. Linking soil parameters to hillslope processes at Fairview Farm likely mirrors processes operating at sites in a similar landscape setting and with similar agricultural land use. Naturally occurring K in soils comes from the weathering of rocks and the breakdown products of minerals in the long term (Sparks et.al, 1987), and in the short term it comes from the turnover of organic materials and further breakdown of soil particles. The nutrient capacity of K in the soil is determined by the total amount of exchangeable K present in the soil colloid and the energy at which it is delivered. This thermodynamic term is expressed as the relative activity ratio and exchange of K+ with Ca2+ and Mg2+. The K potential of a soil is a free energy measure of the amount of work plants need to do to acquire K from the soil and this is unique to each soil. Soil K potential in dryland agriculture can be measured by the isotherm technique. At Fairview Farm, situated between Binalong and Boorowa in New South Wales (NSW), the isotherms describe soil K behaviour on a catena with greater precision than measuring plant-available K. For this area, publicly available soil data mostly describe the upper 10 cm of analysed profiles, but typical crop rooting depth is much deeper (40-150cm). Agricultural soil testing is vital for farmers but has traditionally been expensive with a lag in data provision, meaning soil information is not readily available for 'just-in-time' monitoring. Use of the isotherm technique to evaluate K behaviour is a relatively inexpensive and timely approach that may address this issue and provide a level of detail otherwise not available. This research improves our understanding of K behaviour in an agricultural setting, using proximal sensing (Diffuse Reflectance Infrared Fourier Transformed (DRIFT) Vis-NIR spectroscopy) to measures secondary K-bearing clay minerals to illustrate the effect that secondary minerals have on soil K potential and Fe oxides to reflect on the soil structure. The K-bearing minerals are a source of K and they are associated with storage/release of K. Also, spectroscopy is used to map total K distribution in the soil. This new method is compared with the traditional method for mineral analysis, x-ray diffraction (XRF). Isotherms reveal that Fairview Farm soil preferentially adsorbs K from the soil solution, which is possible in heavy clay soils when K bearing secondary clay minerals are present. The exchange sites on K-bearing minerals must be filled before K accumulates in the soil solution, thus becoming plant available. All the landscape positions show preferential adsorption to some extent, but it decreases from the top of the hill to the bottom of the hill. Although this site has a small amount of plant-available K and only clusters of poorly crystalline K bearing secondary minerals, plants find it easy to extract K from the soil. The Crest plant available K is always at luxury levels, whereas the Mid-slope and Lower slope have decreasing amounts until the energy required to extract the plant available K becomes too much. i.e., K potential decreases too low. In this way, plant available K becomes a subsoil constraint, which is reflected in the uneven crop growth in the paddock.The soil overall is illite/kaolinite dominated, but geochemistry tells us that the formation of the secondary minerals is not dependent on the geology but rather it depends on what is in the soil solution. The top 80 cm of the soil has not evolved from the same geological origin as the soil below. Interstratification of illite with smectite makes it difficult to identify these two minerals as they are poorly crystallised. Farmers and their advisors should consider the mineralogy before deciding on how and when to apply K rich fertilizer.

Download or read book Rainfed Farming Systems written by Philip Tow and published by Springer Science & Business Media. This book was released on 2011-09-16 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt: While a good grasp of the many separate aspects of agriculture is important, it is equally essential for all those involved in agriculture to understand the functioning of the farming system as a whole and how it can be best managed. It is necessary to re-assess and understand rain-fed farming systems around the world and to find ways to improve the selection, design and operation of such systems for long term productivity, profitability and sustainability. The components of the system must operate together efficiently; yet many of the relationships and interactions are not clearly understood. Appreciation of these matters and how they are affected by external influences or inputs are important for decision making and for achieving desirable outcomes for the farm as a whole. This book analyses common rain-fed farming systems and defines the principles and practices important to their effective functioning and management.

Download or read book Precision agriculture 07 written by J.V. Stafford and published by BRILL. This book was released on 2023-08-28 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: "With ever-increasing pressures on world agriculture in both economic and environmental terms, application of the concept of precision agriculture is one way of enabling farmers and producers to cope. ‘Doing arable agriculture and horticulture more precisely’ means that the use of inputs is optimised, crop yield and quality are maximised and leakage of agro-chemicals and fertilisers to the environment is minimised. This publication contains papers presented at the 6th European Conference on Precision Agriculture. The papers reflect the wide range of disciplines encompassed by precision agriculture, including: soil physics, crop physiology, agronomy, IT, agricultural technology, sensor technology, remote sensing, geostatistics and environmental science. The wide range of research topics reported will be a valuable resource for researchers, advisors, teachers and professionals in agriculture long after the conference has finished. Peer-reviewed papers from the 3rd European Conference on Precision Livestock Farming are presented in a companion proceedings, Precision livestock farming ’07."

Download or read book Handbook of Soil Acidity written by Zdenko Rengel and published by CRC Press. This book was released on 2003-01-17 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook offers effective strategies to modify and adjust crop production processes to decrease the toxicity of soil contaminants, balance soil pH, improve root growth and nutrient uptake, and increase agricultural yield. The Handbook of Soil Acidity provides methods to, measure soil acidity, determine the major causes of soil acidification, c

Download or read book Bioremediation of Salt Affected Soils An Indian Perspective written by Sanjay Arora and published by Springer. This book was released on 2017-03-31 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume focuses on the characterization, reclamation, bioremediation, and phytoremediation of salt affected soils and waterlogged sodic soils. Innovative technologies in managing marginal salt affected lands merit immediate attention in the light of climate change and its impact on crop productivity and environment. The decision-making process related to reclamation and management of vast areas of salt affected soils encompasses consideration of economic viability, environmental sustainability, and social acceptability of different approaches. The chapters in this book highlight the significant environmental and social impacts of different ameliorative techniques used to manage salt affected soils. Readers will discover new knowledge on the distribution, reactions, changes in bio-chemical properties and microbial ecology of salt affected soils through case studies exploring Indian soils. The contributions presented by experts shed new light on techniques such as the restoration of degraded lands by growing halophyte plant species, diversification of crops and introduction of microbes for remediation of salt infested soils, and the use of fluorescent pseudomonads for enhancing crop yields.

Download or read book Land Resource Potential and Constraints at Regional and Country Levels written by and published by Food & Agriculture Org.. This book was released on 2000 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.