Microbiome-Based Decontamination of Environmental Pollutants explores the complex interactions of plant-associated microbiomes, providing insights into the pressing challenges of managing environmental resources such as soil, water, and waste. Analysis has shown a formidable potential based in the network interactions between plant microbiota and environmental contaminants. This book presents insights into the potential exploitation of these plant-associated microbial functions. This volume in the Plant and Soil Microbiome series summarizes microbiological aspects of environmental management from the basics to advanced theoretical as well as practical aspects of microbial-based approaches.The physical and chemical changes caused by pollution of an ecosystem can occur rapidly, significantly impacting the functionality of ecosystem services in that environment. Environmental contamination poses and increasingly global challenge through direct and indirect adverse impacts on the climate, soil productivity and the health concerns of human beings. Traditional remediation techniques are not consistently feasible in mitigating environmental contaminants challenges in terms of cost-effectiveness, limited land resources and toxic residual products. The use of plant-associated microbes as part of a network of tools opens a new door to explore an alternative, eco-friendly and economical technology to mitigate the challenges of environmental contamination.
Advances in Organic Farming: Agronomic Soil Management Practices focuses on the integrated interactions between soil-plant-microbe-environment elements in a functioning ecosystem. It explains sustainable nutrient management under organic farming and agriculture, with chapters focusing on the role of nutrient management in sustaining global ecosystems, the remediation of polluted soils, conservation practices, degradation of pollutants, biofertilizers and biopesticides, critical biogeochemical cycles, potential responses for current and impending environmental change, and other critical factors. Organic farming is both challenging and exciting, as its practice of “feeding the soil, not the plant” provides opportunity to better understand why some growing methods are preferred over others. In the simplest terms, organic growing is based on maintaining a living soil with a diverse population of micro and macro soil organisms. Organic matter (OM) is maintained in the soil through the addition of compost, animal manure, green manures and the avoidance of excess mechanization.
Plant Physiology, Volume III: Inorganic Nutrition of Plants deals with the inorganic nutrition and metabolism of plants. The book explores the role of elements, other than carbon, hydrogen, and oxygen, which are essential to, or used by, plants in their vital processes. It summarizes the knowledge about mineral nutrition of plants and presents a philosophy of plant nutrition in general. This volume is organized into six chapters and begins with a brief history of mineral nutrition of plants, as well as the media from which plants draw their nutrients, such as the soil and artificial culture medium. The book then discusses the requirements for specific elements, the symptoms incurred by their deficient supply, and the evidence that a given element can be considered essential. The next chapters focus on the inorganic nutrition of microorganisms, general functions of the essential nutrient elements, and the biological situations in which elementary nitrogen is converted to the organic form. The book concludes by analyzing the soil as a complex biological system and its implication for the interpretation of the nutrition of higher plants. This book is a valuable resource for those interested in plant nutrition and plant physiology.
Interactions between Non-Pathogenic Soil Microorganisms and Plants provides a comprehensive discussion of the non-pathogenic microorganisms associated with roots. It describes how a myriad of soil microorganisms affect plant growth, and how climatic and edaphic conditions contribute to the magnitude of microbial activity. The book is divided into 11 chapters that cover the plant-microorganism system; growth, structure, and physiology of roots; and nutrient uptake. It also explains the root exudates and exudation; energy flow in the plant; and rhizosphere. Legume symbiosis and root nodule symbioses in non-leguminous nitrogen fixing plants are also discussed. Moreover, the book explains the mycorrhizae and the impact of climatic and edaphic conditions on soil management and plant growth. The information that the book presents serves as a useful focal point for further studies on the interactions between plants and soil microorganisms. Thus, it provides an impetus for the development of agricultural practices that could improve food production, while mitigating anthropogenic pollution of agrosytems and waste of energy resources. Students, lecturers, and research workers in plant physiology and anatomy, microbiology, soil science, general ecology, and agronomy will find this book an invaluable reference for their learning and practice.
The Soil-Plant System in Relation to Inorganic Nutrition focuses on the soil-plant system in relation to the inorganic nutrition of plants. More specifically, the book investigates the dynamics of ion uptake in relation to those physical and chemical processes that must be considered both in understanding any observation made on the soil-plant system and in predicting the results of any stress placed on the system. This volume is organized into two parts encompassing seven chapters and begins with an overview of the inorganic nutrition of plants grown in the soil-plant system. This book then discusses the uptake of nutrient ions from the soil into the plant system. The emphasis is on fundamental aspects of ion movement from the soil into and through the soil solution, then into the plant root, and finally into the shoot. The next chapters consider the more practical aspects of the supply of nutrients to plants grown in the soil-plant system and how it can best be supplemented. This book examines the use of isotopes with respect to solid-phase-soil-solution relationships; movement of ions to the roots, into the roots (active or passive), and translocation to the shoot; the mobility of nutrients; laboratory, greenhouse, and field evaluation of soil nutrient supply; and when, where, and what kind of fertilizer to apply. This book will be of interest to botanists, biologists, students, and research workers engaged in the physical and biological sciences.
Advances in Agronomy continues to be recognized as a leading reference and a first-rate source for the latest research in agronomy. As always, the subjects covered are varied and exemplary of the myriad of subject matter dealt with by this long-running serial.
Advances in Agronomy continues to be recognized as a leading reference and a first-rate source for the latest research in agronomy. As always, the subjects covered are varied and exemplary of the myriad of subject matter dealt with by this long-running serial.
Silicon (Si) plays a significant role in the resistance of plants to multiple stresses including biotic and abiotic stresses. Silicon is also the only element that does not damage plants when accumulated in excess. However, the contribution of Si to plant growth has been largely ignored due to its universal existence in the earth's crust. From numerous intensive studies on Si, initiated in Japan about 80 years ago, Japanese scientists realized that Si was important for the healthy growth of rice and for stability of rice production. In a worldwide first, silicon was recognized as a valuable fertilizer in Japan. The beneficial effects of Si on rice growth in particular, are largely attributable to the characteristics of a silica gel that is accumulated on the epidermal tissues in rice. These effects are expressed most clearly under high-density cultivation systems with heavy applications of nitrogen. Si is therefore recognized now as an ''agronomically essential element'' in Japan.Recently, Si has become globally important because it generates resistance in many plants to diseases and pests, and may contribute to reduced rates of application of pesticides and fungicides. Silicon is also now considered as an environment-friendly element. The achievements of Si research in Japan are introduced in this book, in relation to soils, fertilizers and plant nutrition.
Presenting the first book to focus on the importance of silicon for plant health and soil productivity and on our current understanding of this element as it relates to agriculture.Long considered by plant physiologists as a non-essential element, or plant nutrient, silicon was the center of attention at the first international conference on Silicon in Agriculture, held in Florida in 1999.Ninety scientists, growers, and producers of silicon fertilizer from 19 countries pondered a paradox in plant biology and crop science. They considered the element Si, second only to oxygen in quantity in soils, and absorbed by many plants in amounts roughly equivalent to those of such nutrients as sulfur or magnesium. Some species, including such staples as rice, may contain this element in amounts as great as or even greater than any other inorganic constituent. Compilations of the mineral composition of plants, however, and much of the plant physiological literature largely ignore this element. The participants in Silicon in Agriculture explored that extraordinary discrepancy between the silicon content of plants and that of the plant research enterprise.The participants, all of whom are active in agricultural science, with an emphasis on crop production, presented, and were presented with, a wealth of evidence that silicon plays a multitude of functions in the real world of plant life. Many soils in the humid tropics are low in plant available silicon, and the same condition holds in warm to hot humid areas elsewhere. Field experience, and experimentation even with nutrient solutions, reveals a multitude of functions of silicon in plant life. Resistance to disease is one, toleration of toxic metals such as aluminum, another. Silicon applications often minimize lodging of cereals (leaning over or even becoming prostrate), and often cause leaves to assume orientations more favorable for light interception. For some crops, rice and sugarcane in particular, spectacular yield responses to silicon application have been obtained. More recently, other crop species including orchids, daisies and yucca were reported to respond to silicon accumulation and plant growth/disease control. The culture solutions used for the hydroponic production of high-priced crops such as cucumbers and roses in many areas (The Netherlands for example) routinely included silicon, mainly for disease control. The biochemistry of silicon in plant cell walls, where most of it is located, is coming increasingly under scrutiny; the element may act as a crosslinking element between carbohydrate polymers.There is an increased conviction among scientists that the time is at hand to stop treating silicon as a plant biological nonentity. The element exists, and it matters.
Volume 57 contains six outstanding and comprehensive reviews on various agronomic topics. With this latest volume, Advances in Agronomy continues to be recognized as a prolific and first-rate reference by the scientific community. In 1993 Advances in Agronomy increased its publication frequency to three volumes per year, and will continue this trend as the breadth of agronomic inquiry and knowledge continues to grow.