Jordbrugsvidenskab

Jord. Den mørke, fugtige masse, vi lever ovenpå, men som vi sjældent ser, fordi den er dækket af fliser, asfalt eller planter. Når vi graver, sår og planter til, er vi sjældent i tvivl; der udfolder sig et væld af liv i form af planter, rødder, frø og alskens kryb og kravl i jorden. Men hvad er det egentlig, og hvilken betydning har jorden for dyrkningen, klimaet og bæredygtigheden?Bogen tager dig med rundt i alt, du skal vide om jord, når du gerne vil dyrke jorden på bedste vis. Bogen er skrevet til dig, som gerne vil gå grundigt til værks, uden at du nødvendigvis har en masse haveerfaring. Bogen er krydret med illustrative fotos, tips og metoder.Om forfatterAnette Hougaard Nielsen er geolog og ph.d. i geografi og har skrevet en række artikler om klima, natur og miljø, både almene og videnskabelige. Anette Hougaard Nielsen har en baggrund fra økologisk landbrug helt tilbage fra opstarten af økologien i 1980’erne, og hun driver i dag mikrogartneriet Spiselige Stauder i Århus samt Hjemdal Skovhave ved Randers Fjord. Hun har desuden holdt kurser om naturemner og har medvirket til vurdering af naturkvalitet, naturrestaurering og paragraf 3-områder i Danmark.E-bogen er lavet i fixed format

Phosphorus (P) stands second to nitrogen in terms of its essentiality as a plant macronutrient, as well as due to its involvement in almost all plant developmental stages, primary and secondary plant metabolisms, maintenance of membrane structures, and in the structural skeleton of major biomolecules. An optimum P-supply also helps plants combat abiotic stress impacts. Most P in soil remains unavailable for uptake by plants. P-containing fertilizers are being added to agricultural lands to sustain high yields. Only the least amount of the applied P (20%¿30%) is used by most cultivated plants, and the rest remains as legacy P (P surpluses), which eventually causes eutrophication. This book, Phosphorus in Soils and Plants, reviews P in soils and plants, P dynamics in the soil¿water¿sediment environment, the major roles of P in the photosynthetic dark phase-biochemical pathways, major approaches for the sustainable management of P in agriculture, main mechanisms underlying the role of P in the regulation of plant¿microbe interactions in the rhizosphere, literature on the role of microbial phosphate solubilization in management of soil and plant nutrients, and insights into P recovery through waste transformation. This volume is an important resource for plant biologists involved in teaching or research who wish to advance their knowledge of P in soils and plants.

Sandy soils cover approximately 900 million ha worldwide, and there are extensive areas of sandy soils under cultivation. Most sandy soils have high water permeability, low water-holding capacity, low ability to retain and exchange nutrients, weakly developed soil structure and they may be prone to erosion by wind. As irrigation is required for obtaining good crop yields, there is a risk of substantial leaching of nutrients and pesticides, and ground water depletion. Due to global pressure on land resources, marginal soils such as sandy soils are taken into production or cultivated more intensely. Sandy soils ¿ as a group of soils with specific characteristics and ecological limitations ¿ have received limited research attention. This books presents the main papers from the Global Conference on Sandy Soils which was held in June 2023 in Madison, USA. This book focuses on novel and exciting aspects of research on sandy soils which is presented into three sections: Distributionand Assessment, Soil Carbon and Soil Health, and Water and the Environment. It presents a global glimpse on what recent progress has been in the study of sandy soil and their properties and management.

This 2 volume book is an up-to-date overview of current progress in Arbuscular Mycorrhizal Fungal (AMF) technique development, inoculum production and its quality regulations, application in agriculture, horticulture, agroforestry and other ecosystems along with nutrient management for sustainable food production. It offers new insight and cutting-edge information for novices and experts such as students, academicians, researchers, environmentalists, industrialists, and other individuals interested in the field of mycorrhiza.AMF provides favorable rhizospheric environment to the plant with numerous direct and indirect mechanisms, in exchange of soil nutrients and photosynthetically fixed carbon. Other than the species composition and diversity determination of natural ecosystem, AMF play a vital role in maintaining the soil quality, agricultural sustainability and environmental integrity. The second volume provide comprehensive knowledge on AMF role in nutrient cycling, nutrient exchange and their acquisition under normal and stress condition.

This edited volume elucidates state-of-the-art information and provides new paradigms of soil health-based pathways for sustaining plantation crops and diversified systems. The book covers soil characteristics, soil fertility constraints, issues of soil contamination, the impact of climate change on plantation soils, indicators of soil health and soil health assessment, fertility management for healthy soils, soil amendments, soil biodiversity, and biological functions and micro-biome as well as meta-genomic approach.Plantation crops are perennials, cultivated in tropical and sub-tropical agroecosystems in a contiguous area, and comprise estate crops which include tea, coffee, and rubber and small holders¿ plantation crops such as coconut, areca nut, oil palm, cashew, cocoa, and spices. These are high-value crops with considerable significance in livelihood security, commerce, and trade, and are grown in ecologically vulnerable regions such as coastal belts, hilly areas, andregions with high rainfall and high humidity, which makes maintenance of soil health a major challenge. Sustainable agricultural production depends on the health, quality, and functionality of the soil. The book includes technological options to achieve sustainable production encompassing soil health improvement through multi-strata, multi-species cropping systems, integrated farming systems, conservation agriculture practices, cover cropping and green manuring, crop residue recycling, bio-fertilizer and bio-stimulant technologies and organic farming systems.This book is an essential resource for researchers, plantation professionals, educators, and policymakers. It provides valuable insights and practical solutions for addressing emerging issues in soil health management and is a must-read for students of agriculture, forestry, ecology, microbiology, soil science, and environmental sciences.

The book is designed to serve as a textbook for graduate and undergraduate courses on soil and water conservation engineering for students of agricultural engineering, civil engineering, environmental engineering and related disciplines. The book presents the basics of soil and water erosion, and describes the measures to control erosion, focusing on structures to prevent and control erosion. The chapters dedicated to erosion control structures provide a detailed view of each structural construction, covering the function, design and elements of each type of structure. Some common type of structures covered in the book are terrace, bunds, vegetated waterways, and gully control structures, including spillways. The book also covers wind erosion and control structures to prevent wind erosion. Each chapter includes pedagogical elements such as examples, practice questions, and multiple-choice-type questions to improve understanding and aid in self-study. Besides serving as a textbook university coursework, the book can also serve as a supplementary or primary text for professional development courses for practicing engineers engaged in soil and water conservation or watershed management. The book will also serve as a reference for professionals, environmental consultants, and policy makers engaged in soil and water conservation related fields.

This book is based on the papers accepted for presentation during the 3rd Springer Conference of the Arabian Journal of Geosciences (CAJG-3). The book is of interest to all researchers in the fields of geomorphology, sedimentology, and geochemistry. Papers in the field of geomorphology deal with topics related to fault slip and incision rates, soil science, landslides and debris flows, coastal processes, and geoarcheology and geoheritage. Papers in the field of sedimentology cover research studies in stratigraphy and environmental, tectonic, and diagenetic processes, together with studies focusing on the evolutionary, biostratigraphic, and paleo-environmental significance of paleontology. This section also contains papers on marine geosciences, from molecular proxies related to climate to geophysical surveys. The third set of papers focuses on studies related to geochemistry that are focused on sedimentary geochemistry and mineralogical characterization, magmatic and metamorphic processes and products, and the origin and exploration of mineral deposits. This book resumes the current situation related to the abovementioned topics mainly in the Mediterranean realm and its surroundings. The book is of interest to all researchers, practitioners, and students in the fields of geomorphology, sedimentology, and geochemistry.

Soil erosion is a global environmental challenge with profound consequences for land, water, and ecosystems. This book, Soil Erosion - Risk Modelling and Management, takes you on a comprehensive exploration of the intricate science and practical strategies for understanding, predicting, and addressing soil erosion. Inside the pages of this volume, yoüll find a wealth of unique insights, innovative methodologies, and illuminating case studies from diverse regions around the world. Whether yoüre a student, researcher, or practitioner, this book is an essential resource for gaining a deep understanding of soil erosion and discovering effective solutions to this critical environmental issue. The book delves into the intricate science of soil erosion, providing readers with a solid foundation in the principles and processes involved. It helps readers grasp the underlying causes and mechanisms of erosion, making it an invaluable resource for students and researchers in environmental science and related fields. The book is a vital resource that addresses one of the most pressing environmental challenges of our time. It combines scientific insights with practical solutions, making it an essential tool for anyone seeking to understand, address, and combat soil erosion¿s far-reaching impacts on our planet¿s health and well-being.

This book covers cadmium contamination of soil and plants, its sources, acute and long-term impacts on the environment and human health, and overall challenges posed by the global poisoning issue. Cadmium is among the elements that have been most broadly used by man over time, which has led to extensive pollution of surface soils, mainly associated with the mining and smelting of the metal and the addition of organic cadmium compounds to petrol. The release of cadmium into the atmosphere from various high-temperature processes has also led to surface contamination on a regional and even global scale. Cadmium is particularly firmly bound to humic matter in organic-rich soil and to iron oxides in mineral soil and is rather immobile in the soil unless present at very high concentrations. Plants grown on cadmium-rich soils incorporate cadmium, thus increasing the concentration of cadmium in crop plants. Cadmium thus enters the food chain through the consumption of plant material, whichposes important health risks to humans and animals. In this book, readers will find out about the latest mitigation strategies, including a multi-disciplinary approach to address cadmium contamination. Recent methods in cadmium detoxification, speciation, and molecular mechanisms are included, and the book offers the knowledge required for efficient risk assessment, prevention, and countermeasure. Divided into 3 parts, this book brings together expert contributions on cadmium toxicity. In the first part, readers will find out about the different sources and distribution of cadmium in soil and plant ecosystems. The second part of the book outlines the health risks linked to cadmium toxicity, and in the final part, readers will discover sustainable cadmium toxicity mitigation strategies and potential applications of recent biological technology in providing solutions. This book is a valuable resource for students, academics, researchers, and environmental professionalsdoing fieldwork on cadmium contamination throughout the world.

There are an estimated 500 million smallholder farmers across the world, of which a suggested 60-80% are women. Despite this overwhelming majority, women smallholders remain largely unsupported and their contribution to agriculture is often devalued because of their sex.Women and smallholder farming: Addressing global inequities in agriculture provides a comprehensive overview of the main obstacles and challenges women smallholders continue to face, such as restricted access to markets and education, as well as a lack of control over assets and property rights. The book also assesses the impact of sociocultural factors on women smallholder farmers in different regions around the world, including Africa, Asia, Latin America and the Middle East. In highlighting these issues, the book considers how key stakeholders across the agri-food supply chain can support, empower and sufficiently compensate women smallholder farmers for their contribution to agriculture.Edited by two internationally-renowned experts on gender and agriculture, the book will be a standard reference for university and other researchers studying smallholder farming systems in departments of agricultural science, gender studies, international development, politics and development economics, as well as government and non-governmental organisations (NGOs) involved in development programmes focussing on women smallholders.Dr Carolyn Sachs is Professor Emerita of Rural Sociology at The Pennsylvania State University, USA. She serves on an expert panel to the United Nations Programme on Gender, Water and Sanitation and is involved in several extension and outreach programmes, including the Pennsylvania Women's Agricultural Network (PAWAgN), in which she provides agricultural, entrepreneurship and leadership training. Emerita Professor Sachs has held previous positions as Visiting Professor at Charles Sturt University, Australia and Visiting Professor at the United Nations Food and Agricultural Organization, Rome, Italy. She has published widely on gender and agriculture, contributing books, chapters and journal articles, and in 2020, she co-edited the Routledge Handbook of Gender and Agriculture with Dr Paige Castellanos and other notable researchers.Dr Paige Castellanos is Senior Manager of Gender Justice and Inclusion at Oxfam America, USA. Before moving into her new role in 2022, Dr Castellanos was previously Director for the Gender Equity through Agriculture Research and Education (GEARE) Initiative at The Pennsylvania State University, USA. From 2016-2019, Dr Castellanos acted as Project Manager for the Women in Agriculture Network (WAgN): Honduras - a project funded by the United States Agency for International Development (USAID) to improve women's participation in the horticulture value chain in Honduras. She has published widely on gender, empowerment and agriculture and co-edited the Routledge Handbook of Gender and Agriculture alongside Emerita Professor Carolyn Sachs and other notable researchers in 2020.

This book takes you on a sensory exploration, immersing you in the lush fields of lavender, where vibrant hues and intoxicating scents dance in harmony. Discover the secrets to cultivating this magnificent herb, from choosing the perfect lavender varieties to nurturing seedlings, and learn the art of harnessing nature's bounty to create exquisite lavender products. Delve into the chapters that unravel the intricacies of organic farming practices, innovative techniques, and sustainable approaches that embrace the future of lavender cultivation. Written with passion and expertise, this book unveils the latest research, cutting-edge innovations, and emerging trends in lavender farming. Immerse yourself in the vivid descriptions of lavender's healing properties, culinary delights, and its versatility in crafting luxurious cosmetics and skincare products. Whether you are an aspiring lavender farmer, a nature enthusiast, or a lavender lover seeking to deepen your understanding of this enchanting plant, this offers a captivating blend of practical knowledge, inspiring stories, and breathtaking visuals that will transport you to the serene world of lavender farming. Unleash your senses, cultivate your passion, and unlock the secrets to a flourishing lavender farm as you journey through the pages of this captivating book. The fragrance of lavender awaits, inviting you to step into a realm where nature's beauty and abundance intertwine in a symphony of colors, scents, and endless possibilities.

In this book, leading researchers from this field systematically explain the latest research results on anaerobic responses in plants. The book is characterized by its in-depth coverage of the tolerance functions of plants under hypoxic conditions from a variety of perspectives, with a particular focus on research areas related to molecular biology and genetics. Although drought responses have dominated water stress research in the past, recent floods and attempts to introduce new cropping systems have made it necessary to take measures against excessive water stress injury, and systematic research is needed for this purpose. From this point of view, the approach taken in this book is new and interesting in that it covers basic research and adaptation technologies in the field, and can be applied to various different situations. The focus of this book is how plants can adapt to poor environments and improve productivity under the conditions of soil hypoxia caused by excess water, such as heavy rains and typhoons. From this point of view, the reader will be able to understand the various adaptations of plants to climate change, which will clarify the future directions of research and show the possibility of applying the knowledge and techniques gained in this book to the field.The Sixth Report of the Intergovernmental Panel on Climate Change (2021) warns that global warming will proceed faster than previously assumed and that all regions of the world will face increasing changes. ¿Climate Resilient Development¿ has been proposed as a key phrase to combat global warming, and it is important to identify the adaptive capacity of plants and improve it where possible. In this regard, the publication of this book, which includes ideas for mitigating flood damage caused by global warming, is extremely important, timely, and rational.

The advent of X-ray Computed Tomography (CT) as a tool for the soil sciences almost 40 years ago has revolutionised the field. Soil is the fragile, thin layer of material that exists above earth's geological substrates upon which so much of life on earth depends. However a major limitation to our understanding of how soils behave and function is due to its complex, opaque structure that hinders our ability to assess its porous architecture without disturbance. X-ray imagery has facilitated the ability to truly observe soil as it exists in three dimensions and across contrasting spatial and temporal scales in the field in an undisturbed fashion. This book gives a comprehensive overview of the "e;state of the art"e; in a variety of application areas where this type of imaging is used, including soil water physics and hydrology, agronomic management of soils, and soil-plant-microbe interactions. It provides the necessary details for entry level readers in the crucial areas of sample preparation, scanner optimisation and image processing and analysis. Drawing on experts across the globe, from both academia and industry, the book covers the necessary "e;dos and don'ts"e;, but also offers insights into the future of both technology and science. The wider application of the book is provided by dedicated chapters on how the data from such imagery can be incorporated into models and how the technology can be interfaced with other relevant technical applications. The book ends with a future outlook from the four editors, each of whom has over 20 years of experience in the application of X-ray CT to soil science.

This book illustrates the main modern mineralogical analytical procedures that can be applied for forensic purposes on various typologies of materials and substances and has both theoretical and practical approach. Moreover, it focuses on all those challenges that can arise with forensic analysis, such as the choice of the most proper mineralogical techniques as a function of the material and its quantity, destructive and non-destructive analyses, sampling procedures, mineralogical analysis of micro-traces, correct preparation of the samples, correct calibration and analytical conditions of the laboratory instrumentation. Numerous case studies on criminal offenses against persons, environment and cultural heritage are illustrated.

This work focuses on the potential impact of climate change on soil erosion in a monsoon-dominated sub-tropical region. Water-induced soil erosion due to extreme rainfall during the monsoon period is a major problem worldwide, from different environmental and socio-economic perspectives. This study region covered (South Bengal) is one of the fertile agricultural belts that produces a good amount of produce and contributes to the country's GDP. However, the rate of agricultural output has decreased rapidly in recent times due to a decline in soil fertility.The monsoon-dominated sub-tropical region has unique characteristics in terms of seasonal temperature fluctuations and the availability of rainfall events. The sub-tropical region is densely populated, with the majority of the population relying on rain-fed agricultural production systems. The declining rate of agricultural production has also established that soil fertility is declining and soil erosion is increasing. Numerous studies show that soil erosion is the major cause of the region's rapidly increasing trend of land degradation. A homeostatic mechanism cannot replace soil erosion, and a gap arises between soil erosion and regolith formation. Extreme changes in land use and land cover, population growth and the lacking support for traditional agricultural practices and management practices can accelerate the rate of soil erosion and its associated reservoir sedimentation in most countries of the tropical and sub-tropical environment. Quantitative information with maximum possible accuracy through validation regarding soil loss can be an essential part of the appropriate and sustainable soil and water conservation planning. The precise aspects of modern day management strategies are soil erosion susceptibility mapping using empirical and semi-empirical models in a GIS platform or the use of probability statistics.The main objective of this work is to propose the most suitable development strategies considering the amount of soil erosion for the present and future periods. Extensive field research has been done to identify the support practice factor that the local stakeholders adopt in this region. 

Black & white print.This publication, Keys to Soil Taxonomy, 13th edition, 2022, incorporates the amendments approved by the regional and national conferences of the National Cooperative Soil Survey since the publication of the last edition of the Keys in 2014. The authors of the Keys to Soil Taxonomy are identified as the "Soil Survey Staff." This term is meant to include all of the soil classifiers in the National Cooperative Soil Survey program and in the international community who have made significant contributions to the improvement of the taxonomic system.

Soybean (Glycine max L. (Merr)) is one of the most important crops worldwide. Soybean seeds are vital for both protein meal and vegetable oil. Soybean was domesticated in China, and since last 4-5 decades it has become one of the most widely grown crops around the globe. The crop is grown on an anticipated 6% of the world's arable land, and since the 1970s, the area in soybean production has the highest percentage increase compared to any other major crop. It is a major crop in the United States, Brazil, China and Argentina and important in many other countries. The cultivated soybean has one wild annual relative, G. soja, and 23 wild perennial relatives. Soybean has spread to many Asian countries two to three thousand years ago, but was not known in the West until the 18th century. Among the various constraints responsible for decrease in soybean yields are the biotic and abiotic stresses which have recently increased as a result of changing climatic scenarios at global level. A lot of work has been done for cultivar development and germplasm enhancement through conventional plant breeding. This has resulted in development of numerous high yielding and climate resilient soybean varieties. Despite of this development, plant breeding is long-term by nature, resource dependent and climate dependent. Due to the advancement in genomics and phenomics, significant insights have been gained in the identification of genes for yield improvement, tolerance to biotic and abiotic stress and increased quality parameters in soybean. Molecular breeding has become routine and with the advent of next generation sequencing technologies resulting in SNP based molecular markers, soybean improvement has taken a new dimension and resulted in mapping of genes for various traits that include disease resistance, insect resistance, high oil content and improved yield.This book includes chapters from renowned potential soybean scientists to discuss the latest updates on soybean molecular and genetic perspectives to elucidate the complex mechanisms to develop biotic and abiotic stress resilience in soybean. Recent studies on the improvement of oil quality and yield in soybean have also been incorporated.

This edited book discusses how effective soil carbon management plans and policies will ultimately make agriculture more secure against climate change and soil degradation. It is focused on initiatives to enhance soil organic carbon (SOC) and sequestration by launching different schemes and programs. An approach based on practical aspects of managing SOC in agriculture is provided with clear and concise descriptions. It has more attention to successfully implement plans and policies to meet the required level of SOC restoration. The book is covering the urgent needs of plans and policies for soil management and C restoration in agricultural ecosystems which can be beneficial to food, nutrition, environment, and economy security. There is also providing a roadmap on SOC policies to encourage the use of best management practices (BMPs) for soil health and C stock restoration, and achieve the Sustainable Development Goals of the United Nations. The book is suitable for teachers, researchers, government planners and policymakers, undergraduate and graduate students of soil science, soil microbiology, agronomy, ecology, and environmental sciences.

This book focuses on regions for which until now the geomorphology was very poorly studied and relatively unknown. Nevertheless, the landforms and landscapes of the Horn of Africa are highly attractive, diverse and in a few cases unique, since they span very different environments, from highland plateaus and mountains to lowlands (even below sea level) and coastlines with a high degree of diversity and from monsoon to arid climate conditions.  The main topics addressed in the book include the links between the geological evolution and the current large scale geomorphology of the Horn of Africa; the large differences between the highlands and lowlands climate, river hydrology and their variation through time within a climate change perspective. This part of the world was home of the very first hominids. The landscape in which they lived and evolved throughout the Pleistocene is described in comparison with the arid and inhospitable, though immensely scenic, environment of today. Perennial and ephemeral rivers with very different morphology, processes, and hydrology drain the area, and, in combination with the past and recent uplift, substantially contributed to provide the region with peculiar landscapes and landforms. Long lasting weathering and erosion processes result in a typical inselberg landscape such as the Bur region, or the currently exposed flatland of old peneplain surfaces. Their changes through time, induced by both natural and anthropogenic factors, are addressed by a couple of case studies. Though the region has few inhabitants, they had to struggle to find their livelihood in a land that offers poor resources. This resulted in landscape change and land degradation. Examples of human impact on the landscape are presented at different scales.  This book provides readers interested in geography and geomorphology with essential scientific and educational information on the Landscapes and Landforms of Eritrea, Djibouti and Somalia through simple, though scientifically, rigorous texts illustrated with several color maps and photos. One main prerogative of this book is therefore to give an insight into a region of the world where, for geographical and historical constraints, geomorphological investigation was very limited, thus enriching its intrinsic informative value.

This book demonstrates the measurement, monitoring, mapping and modelling of soil pollution and land resources. This book explores state-of-the-art techniques based on open sources software & R statistical programming and modelling in modern geo-computation techniques specifically focusing on the recent trends in data mining/machine learning techniques and robust modelling in soil resources. Soil and agricultural systems are an integral part of the global environment and human wellbeing, providing multiple goods and services essential for people worldwide and crucial for sustainable development. Soil contamination is an environmental hazard and has become a big issue related to environmental health. The challenge of the twenty-first century is to reduce the contaminant load and bring it to below permissible level. The contamination is not only a problem affecting local environments at the place of occurrence but also spreading to other regions because of easy transportation of pollutants. This leads to direct and indirect contamination of land and aquatic systems, surface water and groundwater, inducing significant risks for natural ecosystems.  In this context, the spatial modelling, prediction, efficient use, risk assessment, protection and management of soil resources in the agriculture system are the key to achieving sustainable development goals and ensuring the promotion of an economically, socially and environmental sustainability future. The aim of this book on soil contaminants and environmental health: application of geospatial technology is to identify the soil and sediment quality, sources of contaminants and risk assessment and focuses on the decision-making and planning point of view through GIS data management techniques. This book covers major topics such as spatial modelling in soil and sediments pollution and remediation; radioactive wastes, microbiology of soil and sediments, soil salinity and sodicity, pollution from landfill sites, soil erosion and contamination from agricultural activities, heavy metal pollution and health risk; environmental impact and risk assessment, sustainable land use, landscape management and governance, soil degradation and risk assessment, agricultural soil pollution, pollution due to urban activities, soil pollution by industrial effluents and solid wastes, pollution control and mitigation in extreme environments. The content of this book is of interest to researchers, professionals and policy-makers whose work is in soil science and agriculture practices. The book equips with the knowledge and skills to tackle a wide range of issues manifested in geographic data, including those with scientific, societal and environmental implications.

This book provides an authoritative overview of emerging pollutants in sewage sludge and soils. It traces the latest research and new trends on the characterization, removal and treatment of such pollutants in urban and industrial sewage sludge and soils. The book covers topics such as antibiotic resistance, fate and environmental impact of contaminants of emerging concern, environmental transmission of human pathogenic viruses and their effect on soil, and the repercussion of various emerging pollutants on biodiversity. It also offers a case study of the epidemiology-based surveillance of SARS-CoV-2 in wastewater and sludge.The book appeals not only to researchers and professionals working with emerging contaminants, but also to policy makers and a broader audience interested in learning more about the effects of these contaminants in human and environmental health.

Soil and crop sensing is a fundamental component and the first important step in precision agriculture. Unless the level of soil and crop variability is known, appropriate management decisions cannot be made and implemented. In the last few decades, various ground-based sensors have been developed to measure spatial variability in soil properties and nutrients, crop growth and yield, and pest conditions. Remote sensing as an important data collection tool has been increasingly used to map soil and crop growth variability as spatial, spectral and temporal resolutions of image data have improved significantly in recent years. While identifying spatial variability of soil and crop growth within fields is an important first step towards precision management, using that variability to formulate variable rate application plans of farming inputs such as fertilizers and pesticides is another essential step in precision agriculture.The purpose of this book is to present the historical, current and future developments of soil and crop sensing technologies with fundamentals and practical examples. The first chapter gives an overview of soil and crop sensing technologies for precision crop production. The next six chapters provide details on theories, methods, practical applications, as well as challenges and future research needs for all aspects of soil and crop sensing. The last two chapters show how soil and crop sensing technologies can be used for plant phenotyping and precision fertilization. The chapters are written by some of the world's leading experts who have contributed significantly to the developments of precision agriculture technologies, especially in the area of soil and crop sensing. They use their knowledge, experiences, and successful stories to present informative and up-to-date information on relevant topics. Therefore, this book is an invaluable addition to the literature and can be used as a reference by scientists, engineers, practitioners, and college students for the dissemination and advancement of precision agriculture technologies for practical applications.