Author: Dilfuza Egamberdieva
Publisher: Springer
ISBN: 3319134019
Category : Science
Languages : en
Pages : 444
Book Description
This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.
Plant-Growth-Promoting Rhizobacteria (PGPR) and Medicinal Plants
Author: Dilfuza Egamberdieva
Publisher: Springer
ISBN: 3319134019
Category : Science
Languages : en
Pages : 444
Book Description
This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.
Publisher: Springer
ISBN: 3319134019
Category : Science
Languages : en
Pages : 444
Book Description
This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.
Plant-Growth-Promoting Rhizobacteria (PGPR) and Medicinal Plants
Author: Dilfuza Egamberdieva
Publisher: Springer
ISBN: 9783319380629
Category : Science
Languages : en
Pages : 0
Book Description
This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.
Publisher: Springer
ISBN: 9783319380629
Category : Science
Languages : en
Pages : 0
Book Description
This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.
PGPR Amelioration in Sustainable Agriculture
Author: Amit Kishore Singh
Publisher: Woodhead Publishing
ISBN: 0128160195
Category : Technology & Engineering
Languages : en
Pages : 285
Book Description
PGPR Amelioration in Sustainable Agriculture: Food Security and Environmental Management explores the growth-promoting rhizobacteria (PGPR) that are indigenous to soil and plant rhizosphere. These microorganisms have significant potential as important tools for sustainable agriculture. PGPR enhance the growth of root systems and often control certain plant pathogens. As PGPR amelioration is a fascinating subject, is multidisciplinary in nature, and concerns scientists involved in plant heath and plant protection, this book is an ideal resource that emphasizes the current trends of, and probable future of, PGPR developments. Chapters incorporate both theoretical and practical aspects and may serve as baseline information for future research. This book will be useful to students, teachers and researchers, both in universities and research institutes, especially working in areas of agricultural microbiology, plant pathology and agronomy. - Presents new concepts and current development in PGPR research and evaluates the implications for sustainable productivity - Describes the role of multi-omics approaches in establishing an understanding of plant–microbe interactions that help plants optimize abiotic stresses - Incorporates both theoretical and practical aspects, and will serve as a baseline for future research
Publisher: Woodhead Publishing
ISBN: 0128160195
Category : Technology & Engineering
Languages : en
Pages : 285
Book Description
PGPR Amelioration in Sustainable Agriculture: Food Security and Environmental Management explores the growth-promoting rhizobacteria (PGPR) that are indigenous to soil and plant rhizosphere. These microorganisms have significant potential as important tools for sustainable agriculture. PGPR enhance the growth of root systems and often control certain plant pathogens. As PGPR amelioration is a fascinating subject, is multidisciplinary in nature, and concerns scientists involved in plant heath and plant protection, this book is an ideal resource that emphasizes the current trends of, and probable future of, PGPR developments. Chapters incorporate both theoretical and practical aspects and may serve as baseline information for future research. This book will be useful to students, teachers and researchers, both in universities and research institutes, especially working in areas of agricultural microbiology, plant pathology and agronomy. - Presents new concepts and current development in PGPR research and evaluates the implications for sustainable productivity - Describes the role of multi-omics approaches in establishing an understanding of plant–microbe interactions that help plants optimize abiotic stresses - Incorporates both theoretical and practical aspects, and will serve as a baseline for future research
Advances in Microbial Biotechnology
Author: Pradeep Kumar, PhD.
Publisher: CRC Press
ISBN: 1351248898
Category : Medical
Languages : en
Pages : 536
Book Description
Over the last few decades, the rapid and vast development of advanced microbial bioresources and metagenomics techniques has completely transformed the field of microbial biotechnology. Our understanding of microbial diversity, evolutionary biology, and microbial interaction with their animal and plant hosts at molecular level has been revolutionized with an abundance of new research. This new volume, Advances in Microbial Biotechnology: Current Trends and Future Prospect, focuses on the application of microorganisms for several purposes: for plant protection and improvement, for environmental remediation purposes, and for the improvement of human health. Various applications of microorganisms are covered broadly and have been appropriately reflected in depth in different chapters. The book is divided into four major sections: applied microbiology in agriculture microbes in the environment microbes in human health microbes in nanotechnology The book provides insight into the diverse microorganisms that have been explored and exploited in the development of various applications for agricultural improvements. The book also looks at the application of microbes for the removal of pollutants and the recovery of metals and oils. Also discussed is the detection and exploitation of microorganisms in the diagnosis of human diseases, providing possible holistic approaches to health. This new volume will provide a wealth of information on new research on the application of microbial biotechnology today.
Publisher: CRC Press
ISBN: 1351248898
Category : Medical
Languages : en
Pages : 536
Book Description
Over the last few decades, the rapid and vast development of advanced microbial bioresources and metagenomics techniques has completely transformed the field of microbial biotechnology. Our understanding of microbial diversity, evolutionary biology, and microbial interaction with their animal and plant hosts at molecular level has been revolutionized with an abundance of new research. This new volume, Advances in Microbial Biotechnology: Current Trends and Future Prospect, focuses on the application of microorganisms for several purposes: for plant protection and improvement, for environmental remediation purposes, and for the improvement of human health. Various applications of microorganisms are covered broadly and have been appropriately reflected in depth in different chapters. The book is divided into four major sections: applied microbiology in agriculture microbes in the environment microbes in human health microbes in nanotechnology The book provides insight into the diverse microorganisms that have been explored and exploited in the development of various applications for agricultural improvements. The book also looks at the application of microbes for the removal of pollutants and the recovery of metals and oils. Also discussed is the detection and exploitation of microorganisms in the diagnosis of human diseases, providing possible holistic approaches to health. This new volume will provide a wealth of information on new research on the application of microbial biotechnology today.
Role of Plant Growth Promoting Microorganisms in Sustainable Agriculture and Nanotechnology
Author: Ajay Kumar
Publisher: Woodhead Publishing
ISBN: 0128170050
Category : Technology & Engineering
Languages : en
Pages : 317
Book Description
Role of Plant Growth Promoting Microorganisms in Sustainable Agriculture and Nanotechnology explores PGPMs (actinomycetes, bacteria, fungi and cyanobacteria) and their multidimensional roles in agriculture, including their increasing applications in sustainable agriculture. In addition to their traditional understanding and applications in agriculture, PGPMs are increasingly known as a source of nano-particles production that are gaining significant interest in their ability to provide more economically, environmentally friendly and safe technologies to crop growers. The book considers new concepts and current developments in plant growth, thus promoting microorganisms research and evaluating its implications for sustainable productivity. Users will find this to be an invaluable resource for researchers in applied microbial biotechnology, soil science, nano-technology of microbial strains, and industry personnel in these areas. - Presents basic and applied aspects of sustainable agriculture, including nano-technology in sustainable agriculture - Identifies molecular tools/omics approaches for enhancing plant growth promoting microorganisms - Discusses plant growth promoting microorganisms in bioactive compounds production, and as a source of nano-particles
Publisher: Woodhead Publishing
ISBN: 0128170050
Category : Technology & Engineering
Languages : en
Pages : 317
Book Description
Role of Plant Growth Promoting Microorganisms in Sustainable Agriculture and Nanotechnology explores PGPMs (actinomycetes, bacteria, fungi and cyanobacteria) and their multidimensional roles in agriculture, including their increasing applications in sustainable agriculture. In addition to their traditional understanding and applications in agriculture, PGPMs are increasingly known as a source of nano-particles production that are gaining significant interest in their ability to provide more economically, environmentally friendly and safe technologies to crop growers. The book considers new concepts and current developments in plant growth, thus promoting microorganisms research and evaluating its implications for sustainable productivity. Users will find this to be an invaluable resource for researchers in applied microbial biotechnology, soil science, nano-technology of microbial strains, and industry personnel in these areas. - Presents basic and applied aspects of sustainable agriculture, including nano-technology in sustainable agriculture - Identifies molecular tools/omics approaches for enhancing plant growth promoting microorganisms - Discusses plant growth promoting microorganisms in bioactive compounds production, and as a source of nano-particles
Microbial-mediated Induced Systemic Resistance in Plants
Author: Devendra K. Choudhary
Publisher: Springer
ISBN: 9811003882
Category : Science
Languages : en
Pages : 233
Book Description
With a focus on food safety, this book highlights the importance of microbes in sustainable agriculture. Plants, sessile organisms that are considered as primary producers in the ecosystem and communicate with above- and below-ground communities that consist of microbes, insects, and other vertebrate and invertebrate animals, are subjected to various kinds of stress. Broadly speaking, these can be subdivided into abiotic and biotic stresses. Plants have evolved to develop elaborate mechanisms for coping with and adapting to the environmental stresses. Among other stresses, habitat-imposed biotic stress is one serious condition causing major problems for crop productivity. Most plants employ plant-growth-promoting microorganisms (PGPMs) to combat and protect themselves from stresses and also for better growth. PGPMs are bacteria associated with plant roots and they augment plant productivity and immunity. They are also defined as root-colonizing bacteria that have beneficial effects on plant growth and development. Remarkably, PGPMs including mycorrhizae, rhizobia, and rhizobacteria (Acinetobacter, Agrobacterium, Arthrobacter, Azospirillum, Bacillus, Bradyrhizobium, Frankia, Pseudomonas, Rhizobium, Serratia, Thiobacillus) form associations with plant roots and can promote plant growth by increasing plants’ access to soil minerals and protecting them against pathogens. To combat the pathogens causing different diseases and other biotic stresses, PGPMs produce a higher level of resistance in addition to plants’ indigenous immune systems in the form of induced systemic resistance (ISR). The ISR elicited by PGPMs has suppressed plant diseases caused by a range of pathogens in both the greenhouse and field. As such, the role of these microbes can no longer be ignored for sustainable agriculture. Today, PGPMs are also utilized in the form of bio-fertilizers to increase plant productivity. However, the use of PGPMs requires a precise understanding of the interactions between plants and microbes, between microbes and microbiota, and how biotic factors influence these relationships. Consequently, continued research is needed to develop new approaches to boost the efficiency of PGPMs and to understand the ecological, genetic and biochemical relationships in their habitat. The book focuses on recent research concerning interactions between PGPMs and plants under biotic stress. It addresses key concerns such as – 1. The response of benign microbes that benefit plants under biotic stress 2. The physiological changes incurred in plants under harsh conditions 3. The role of microbial determinants in promoting plant growth under biotic stress The book focuses on a range of aspects related to PGPMs such as their mode of action, priming of plant defence and plant growth in disease challenged crops, multifunctional bio-fertilizers, PGPM-mediated disease suppression, and the effect of PGPMs on secondary metabolites etc. The book will be a valuable asset to researchers and professionals working in the area of microbial-mediated support of plants under biotic stress.
Publisher: Springer
ISBN: 9811003882
Category : Science
Languages : en
Pages : 233
Book Description
With a focus on food safety, this book highlights the importance of microbes in sustainable agriculture. Plants, sessile organisms that are considered as primary producers in the ecosystem and communicate with above- and below-ground communities that consist of microbes, insects, and other vertebrate and invertebrate animals, are subjected to various kinds of stress. Broadly speaking, these can be subdivided into abiotic and biotic stresses. Plants have evolved to develop elaborate mechanisms for coping with and adapting to the environmental stresses. Among other stresses, habitat-imposed biotic stress is one serious condition causing major problems for crop productivity. Most plants employ plant-growth-promoting microorganisms (PGPMs) to combat and protect themselves from stresses and also for better growth. PGPMs are bacteria associated with plant roots and they augment plant productivity and immunity. They are also defined as root-colonizing bacteria that have beneficial effects on plant growth and development. Remarkably, PGPMs including mycorrhizae, rhizobia, and rhizobacteria (Acinetobacter, Agrobacterium, Arthrobacter, Azospirillum, Bacillus, Bradyrhizobium, Frankia, Pseudomonas, Rhizobium, Serratia, Thiobacillus) form associations with plant roots and can promote plant growth by increasing plants’ access to soil minerals and protecting them against pathogens. To combat the pathogens causing different diseases and other biotic stresses, PGPMs produce a higher level of resistance in addition to plants’ indigenous immune systems in the form of induced systemic resistance (ISR). The ISR elicited by PGPMs has suppressed plant diseases caused by a range of pathogens in both the greenhouse and field. As such, the role of these microbes can no longer be ignored for sustainable agriculture. Today, PGPMs are also utilized in the form of bio-fertilizers to increase plant productivity. However, the use of PGPMs requires a precise understanding of the interactions between plants and microbes, between microbes and microbiota, and how biotic factors influence these relationships. Consequently, continued research is needed to develop new approaches to boost the efficiency of PGPMs and to understand the ecological, genetic and biochemical relationships in their habitat. The book focuses on recent research concerning interactions between PGPMs and plants under biotic stress. It addresses key concerns such as – 1. The response of benign microbes that benefit plants under biotic stress 2. The physiological changes incurred in plants under harsh conditions 3. The role of microbial determinants in promoting plant growth under biotic stress The book focuses on a range of aspects related to PGPMs such as their mode of action, priming of plant defence and plant growth in disease challenged crops, multifunctional bio-fertilizers, PGPM-mediated disease suppression, and the effect of PGPMs on secondary metabolites etc. The book will be a valuable asset to researchers and professionals working in the area of microbial-mediated support of plants under biotic stress.
Environmental and Agricultural Microbiology
Author: Bibhuti Bhusan Mishra
Publisher: John Wiley & Sons
ISBN: 111952623X
Category : Technology & Engineering
Languages : en
Pages : 466
Book Description
Environmental and Agricultural Microbiology Uniquely reveals the state-of-the-art microbial research/advances in the environment and agriculture fields Environmental and Agricultural Microbiology: Applications for Sustainability is divided into two parts which embody chapters on sustenance and life cycles of microorganisms in various environmental conditions, their dispersal, interactions with other inhabited communities, metabolite production, and reclamation. Though books pertaining to soil & agricultural microbiology/environmental biotechnology are available, there is a dearth of comprehensive literature on the behavior of microorganisms in the environmental and agricultural realm. Part 1 includes bioremediation of agrochemicals by microalgae, detoxification of chromium and other heavy metals by microbial biofilm, microbial biopolymer technology including polyhydroxyalkanoates (PHAs) and polyhydroxybutyrates (PHB), their production, degradability behaviors, and applications. Biosurfactants production and their commercial importance are also systematically represented in this part. Part 2 having 9 chapters, facilitates imperative ideas on approaches for sustainable agriculture through functional soil microbes, next-generation crop improvement strategies via rhizosphere microbiome, production and implementation of liquid biofertilizers, mitigation of methane from livestock, chitinases from microbes, extremozymes, an enzyme from extremophilic microorganism and their relevance in current biotechnology, lithobiontic communities, and their environmental importance, have all been comprehensively elaborated. In the era of sustainable energy production, biofuel and other bioenergy products play a key role, and their production from microbial sources are frontiers for researchers. The final chapter unveils the importance of microbes and their consortia for management of solid waste in amalgamation with biotechnology Audience The book will be read by environmental microbiologists, biotechnologists, chemical and agricultural engineers.
Publisher: John Wiley & Sons
ISBN: 111952623X
Category : Technology & Engineering
Languages : en
Pages : 466
Book Description
Environmental and Agricultural Microbiology Uniquely reveals the state-of-the-art microbial research/advances in the environment and agriculture fields Environmental and Agricultural Microbiology: Applications for Sustainability is divided into two parts which embody chapters on sustenance and life cycles of microorganisms in various environmental conditions, their dispersal, interactions with other inhabited communities, metabolite production, and reclamation. Though books pertaining to soil & agricultural microbiology/environmental biotechnology are available, there is a dearth of comprehensive literature on the behavior of microorganisms in the environmental and agricultural realm. Part 1 includes bioremediation of agrochemicals by microalgae, detoxification of chromium and other heavy metals by microbial biofilm, microbial biopolymer technology including polyhydroxyalkanoates (PHAs) and polyhydroxybutyrates (PHB), their production, degradability behaviors, and applications. Biosurfactants production and their commercial importance are also systematically represented in this part. Part 2 having 9 chapters, facilitates imperative ideas on approaches for sustainable agriculture through functional soil microbes, next-generation crop improvement strategies via rhizosphere microbiome, production and implementation of liquid biofertilizers, mitigation of methane from livestock, chitinases from microbes, extremozymes, an enzyme from extremophilic microorganism and their relevance in current biotechnology, lithobiontic communities, and their environmental importance, have all been comprehensively elaborated. In the era of sustainable energy production, biofuel and other bioenergy products play a key role, and their production from microbial sources are frontiers for researchers. The final chapter unveils the importance of microbes and their consortia for management of solid waste in amalgamation with biotechnology Audience The book will be read by environmental microbiologists, biotechnologists, chemical and agricultural engineers.
Plant-Associated Bacteria
Author: Samuel S. Gnanamanickam
Publisher: Springer Science & Business Media
ISBN: 1402045387
Category : Science
Languages : en
Pages : 716
Book Description
This volume is envisioned as a resource for researchers working with beneficial and harmful groups of bacteria associated with crop plants. The book is divided into two parts, with Part I on beneficial bacteria including chapters on symbiotic nitrogen fixers and rhizosphere bacteria. The second part consists of detailed descriptions of 8 genera of plant pathogenic bacteria, including Agrobacterium and Herbaspirillum. Each chapter covers terminology, molecular phylogeny and more. soft-rot, Pseudomonas, Xanthomonas, Ralstonia, Burkholderia and Acidovorax There is an opening chapter on the plant-associated bacteria survey, molecular phylogeny, genomics and recent advances. And each chapter includes terminology/definitions, molecular phylogeny, methods that can be used (both traditional and latest molecular tools) and applications
Publisher: Springer Science & Business Media
ISBN: 1402045387
Category : Science
Languages : en
Pages : 716
Book Description
This volume is envisioned as a resource for researchers working with beneficial and harmful groups of bacteria associated with crop plants. The book is divided into two parts, with Part I on beneficial bacteria including chapters on symbiotic nitrogen fixers and rhizosphere bacteria. The second part consists of detailed descriptions of 8 genera of plant pathogenic bacteria, including Agrobacterium and Herbaspirillum. Each chapter covers terminology, molecular phylogeny and more. soft-rot, Pseudomonas, Xanthomonas, Ralstonia, Burkholderia and Acidovorax There is an opening chapter on the plant-associated bacteria survey, molecular phylogeny, genomics and recent advances. And each chapter includes terminology/definitions, molecular phylogeny, methods that can be used (both traditional and latest molecular tools) and applications
Bacteria in Agrobiology: Crop Ecosystems
Author: Dinesh K. Maheshwari
Publisher: Springer Science & Business Media
ISBN: 3642183573
Category : Science
Languages : en
Pages : 438
Book Description
The future of agriculture strongly depends on our ability to enhance productivity without sacrificing long-term production potential. An ecologically and economically sustainable strategy is the application of microorganisms, such as the diverse bacterial species of plant growth promoting bacteria (PGPB). The use of these bio-resources for the enhancement of crop productivity is gaining worldwide importance. Bacteria in Agrobiology: Crop Ecosystems describes the beneficial role of plant growth promoting bacteria with special emphasis on oil yielding crops, cereals, fruits and vegetables. Chapters present studies on various aspects of bacteria-plant interactions, soil-borne and seed-borne diseases associated with food crops such as rice, sesame, peanuts, and horticultural crops. Further reviews describe technologies to produce inoculants, the biocontrol of post harvest pathogens as a suitable alternative to agrochemicals, and the restoration of degraded soils.
Publisher: Springer Science & Business Media
ISBN: 3642183573
Category : Science
Languages : en
Pages : 438
Book Description
The future of agriculture strongly depends on our ability to enhance productivity without sacrificing long-term production potential. An ecologically and economically sustainable strategy is the application of microorganisms, such as the diverse bacterial species of plant growth promoting bacteria (PGPB). The use of these bio-resources for the enhancement of crop productivity is gaining worldwide importance. Bacteria in Agrobiology: Crop Ecosystems describes the beneficial role of plant growth promoting bacteria with special emphasis on oil yielding crops, cereals, fruits and vegetables. Chapters present studies on various aspects of bacteria-plant interactions, soil-borne and seed-borne diseases associated with food crops such as rice, sesame, peanuts, and horticultural crops. Further reviews describe technologies to produce inoculants, the biocontrol of post harvest pathogens as a suitable alternative to agrochemicals, and the restoration of degraded soils.
PGPR: Biocontrol and Biofertilization
Author: Zaki Anwar Siddiqui
Publisher: Springer Science & Business Media
ISBN: 1402041527
Category : Technology & Engineering
Languages : en
Pages : 325
Book Description
PGPR have gained world wide importance and acceptance for agricultural benefits. These microorganisms are the potential tools for sustainable agriculture and the trend for the future. Scientific researches involve multidisciplinary approaches to understand adaptation of PGPR to the rhizosphere, mechanisms of root colonization, effects on plant physiology and growth, biofertilization, induced systemic resistance, biocontrol of plant pathogens, production of determinants etc. Biodiversity of PGPR and mechanisms of action for the different groups: diazotrophs, bacilli, pseudomonads, and rhizobia are shown. Effects of physical, chemical and biological factors on root colonization and the proteomics perspective on biocontrol and plant defence mechanism is discussed. Visualization of interactions of pathogens and biocontrol agents on plant roots using autofluorescent protein markers has provided more understanding of biocontrol process. Commercial formulations and field applications of PGPR are detailed.
Publisher: Springer Science & Business Media
ISBN: 1402041527
Category : Technology & Engineering
Languages : en
Pages : 325
Book Description
PGPR have gained world wide importance and acceptance for agricultural benefits. These microorganisms are the potential tools for sustainable agriculture and the trend for the future. Scientific researches involve multidisciplinary approaches to understand adaptation of PGPR to the rhizosphere, mechanisms of root colonization, effects on plant physiology and growth, biofertilization, induced systemic resistance, biocontrol of plant pathogens, production of determinants etc. Biodiversity of PGPR and mechanisms of action for the different groups: diazotrophs, bacilli, pseudomonads, and rhizobia are shown. Effects of physical, chemical and biological factors on root colonization and the proteomics perspective on biocontrol and plant defence mechanism is discussed. Visualization of interactions of pathogens and biocontrol agents on plant roots using autofluorescent protein markers has provided more understanding of biocontrol process. Commercial formulations and field applications of PGPR are detailed.