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Author: Shree Nath Singh
Publisher: Springer
ISBN: 3319451561
Category : Science
Languages : en
Pages : 233
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Book Description
This book focuses on the microbial degradation of endosulfan, lindane, chlorophenols, organochlorine, aldrin, dieldrin, isoproturon and atrazine, etc. which are commonly used in crop fields to kill the pests. Further, it illustrates the role of degradative enzymes, metabolic pathways of degradation, toxicity of metabolites, and the factors regulating the pesticide degradation. In view of persistence of synthetic pesticides, scientists have discovered suitable microbes, such as bacteria, fungi and algae (naturally occurring or genetically engineered) over the years. After successful trials under laboratory and field conditions, these microbes are being used to degrade chemical pesticides in agriculture. As of now 2.56 billion kg of chemical pesticides is used every year to protect agricultural fields against pest attack. These technologies have been found to be highly effective, eco-friendly and cost-effective without disturbing the agro-ecosystems. As this book contains review articles contributed by various researchers from different countries whose work demonstrates recent advances in microbial degradation of pesticides, it will serve as a ready reckoner and also a valuable quick reference guide for scientists, academicians, cultivators and industrialists alike.
Author: Shree Nath Singh
Publisher: Springer
ISBN: 3319451561
Category : Science
Languages : en
Pages : 233
Get Book
Book Description
This book focuses on the microbial degradation of endosulfan, lindane, chlorophenols, organochlorine, aldrin, dieldrin, isoproturon and atrazine, etc. which are commonly used in crop fields to kill the pests. Further, it illustrates the role of degradative enzymes, metabolic pathways of degradation, toxicity of metabolites, and the factors regulating the pesticide degradation. In view of persistence of synthetic pesticides, scientists have discovered suitable microbes, such as bacteria, fungi and algae (naturally occurring or genetically engineered) over the years. After successful trials under laboratory and field conditions, these microbes are being used to degrade chemical pesticides in agriculture. As of now 2.56 billion kg of chemical pesticides is used every year to protect agricultural fields against pest attack. These technologies have been found to be highly effective, eco-friendly and cost-effective without disturbing the agro-ecosystems. As this book contains review articles contributed by various researchers from different countries whose work demonstrates recent advances in microbial degradation of pesticides, it will serve as a ready reckoner and also a valuable quick reference guide for scientists, academicians, cultivators and industrialists alike.
Author: Shaohua Chen
Publisher: Scientific Research Publishing, Inc. USA
ISBN: 1649972210
Category : Antiques & Collectibles
Languages : en
Pages :
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Book Description
The extensive use of pesticides, their disposal and consequent presence in various environments are of great concern regarding their ecotoxicological effect on the organisms of different trophic levels. Such widespread use results in an increased concentration of these compounds in water, sediments and soils. Chemical pesticides undergo many different pathways once they enter the environment, including transformation/degradation, sorption-desorption, volatilization, uptake by plants, runoff into surface waters and transport into groundwater. Transformation or degradation is one of the key processes that governs the environmental fate and transport of chemical pesticides, which also comprises different processes including abiotic degradation and biodegradation. During these processes, chemical pesticides are transformed into the degradation products or are completely mineralized to a carbon field. Although abiotic degradation plays a role in many cases, the biodegradation of chemical pesticides by microorganisms is usually the most important and dominant process.
Author: Sazada Siddiqui
Publisher: Springer Nature
ISBN: 3030970000
Category : Science
Languages : en
Pages : 537
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Book Description
This volume offers the latest theory, procedures, techniques and applications pertaining to the bioremediation of pesticides, as well as current case studies. The book is composed of chapters written by global experts and is divided into three topical sections. Section A deals with concepts and mechanisms of pesticides bioremediation; Section B examines latest tools and techniques; Section C offers global case studies of pesticides bioremediation. The novel methods described here are timely, as traditional pesticide usage leads to high wastage via decay, vaporization and seepage. This of course leads to environmental contamination and has necessitated the development and use of novel technologies like bioremediation for minimizing the impact of pesticides on the environment. This volume will be of relevance to academics, researchers and students who are working in the realm of pesticide bioremediation, and will enable policy makers and managerial experts across the globe in drafting policies and strategies for the management and treatment of pesticides.
Author: Doris F. Paris
Publisher:
ISBN:
Category : Aquatic biology
Languages : en
Pages : 66
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Book Description
Author: Fumio Matsumura
Publisher: Springer Science & Business Media
ISBN: 1468440888
Category : Medical
Languages : en
Pages : 316
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Book Description
When first developed, chlorinated pesticides such as DDT, dieldrin, and mirex were received with open arms, quickly becoming popular as effective, economic agents against pests. But evidence began to mount that residues of these chemicals remained in the environment, not breaking down, often appearing in plants and animals. By the late seventies many pesticides had achieved a terrible notoriety and were subsequently banned in a number of countries. Of tremendous concern, then, is the persistence of pesticides in the environment. The major thrust of research and development in the area of pesticides has properly been the creation of substances that are both effective and degradable. Yet in order to successfully promote the use of biodegradable pesticides, one must fully understand the mechanism of degradation, and it is to this vital subject that we address ourselves in the present volume. According to the Biodegradation Task Force, Safety of Chemicals Com mittee, Brussels (1978), biodegradation may be defined as the molecular degradation of an organic substance resulting from the complex action of living organisms. A substance is said to be biodegraded to an environmentally acceptable extent when environmentally undesirable properties are lost. Loss of some characteristic function or property of substance by biodegradation may be referred to as biological transformation.
Author: Arthur Rosenberg
Publisher:
ISBN:
Category : DDT (Insecticide)
Languages : en
Pages : 40
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Book Description
The toxicity and degradation of pesticides introduced into sanitary sewer facilities has yet to be extensively studied. For this reason, the effect and fate of eight pesticides were investigated using the BOD method with a sewage inoculum. Six of the eight chemicals (Carbaryl, Malathion, Diazinon, Dursban, Dichlorvos, and 2,4,-dichlorophenoxyacetic acid) did not retard oxygen consumption by a 0.33% sewage inoculum in a one-week test period at concentrations ranging from 0.1 to 100 micro g/ml of active ingredient. Baygon at 10 and 100 micro g/ml was toxic in the test period. Ficam at 1 and 10 micro g/ml also slowed oxygen consumption during the decomposition of sewage as compared to a control with no pesticide. The BOD method was used to test the biodegradation of the pesticides with each chemical being used as a sole carbon source for an adapted or unadapted inoculum. Carbaryl was readily degraded, and Malathion and Diazinon also appeared to undergo oxidation, although the reaction was incomplete. Dichlorvos, Baygon, and 2,4-D were resistant to breakdown when tested by the BOD method.
Author: Kenneth D. Racke
Publisher:
ISBN:
Category : Business & Economics
Languages : en
Pages : 320
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Book Description
This new volume offers comprehensive information on microbial adaptation for pesticide degradation. Among the many topics covered in its 20 chapters are a general description of enhanced biodegradation as it occurs in an agricultural context; the microbial aspects of enhanced biodegradation, including the genetics, biochemistry, and ecology of pesticide-degrading microorganisms; and the potential impact of enhanced degradation on pesticide fate in aquatic systems and groundwater. Practical options for the management of enhanced biodegradation are also examined, both to enable continued agricultural use of susceptible pesticides and also to exploit the degrading capacity of microorganisms for waste disposal and environmental remediation.
Author: R. Lal
Publisher: Springer Science & Business Media
ISBN: 3642699170
Category : Science
Languages : en
Pages : 279
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Book Description
Of all the food produced in the world one third is lost to insect pests, weeds and diseases, and the total world population is estimated as growing from 4000 million in 1975 to about 6000 million by the year 2000. To satisfy these needs, the world's farmers must meet the extra requirement every year. The easiest way in which farmers can increase the amount of food they produce is to prevent the loss due to pests. The biological control measures which were once thought to be the safest methods of pest control have, as we now know, not proved successful on a commercial scale. In such a dismal situation the only solution is to use pesticides to save the losses from pests and to increase the crop yield. Apart from agriculture, pesticides have also contributed much to human com fort by controlling the vectors of typhoid, malaria, sleeping sickness, filariasis, dengue hemorrhage fever, plague etc. On the other hand, the indiscriminate use of insecticides and their harmful effects on nontarget organisms has attracted much attention from people in all walks of life, for example, scientists, administrators, the press and the public. The harmful effects of insecticides on higher organisms such as birds, fish and mammals are easy to observe and have received much attention. However, the interactions of insecticides with microorganisms such as bacteria, fungi, algae and protozoa have gone unnoticed until recently.
Author: Ian R. Hill
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 870
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Book Description
Pesticides; Microbiological aspects of the soil, plant, aquatic, air and animal environments - soil and plant; Aquatic environments; The air and animals; The behaviour and fate of pesticides in microbial environments; Microbial transformation of pesticides; Transformations of pesticides in the environment - the experimental approach; Some methods for assessing pesticide effects on non-target soil microorganisms and their activities; Pesticide effects on non-target soil microorganisms; Interactions of pesticides with micro-algae; Pesticides and the micro-fauna of soil and water; Microbial degradation of insecticides; Microbial degradation of herbicides; Microbial degradation of fungicides, fumigants and nematocides.
Author: Francis A. Gunther
Publisher: Springer
ISBN: 9780387057798
Category : Science
Languages : en
Pages : 149
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Book Description
That residues of pesticide and other contaminants in the total environment are of concern to everyone everywhere is attested by the reception accorded previous volumes of "Residue Reviews" and by the gratifying enthusiasm, sincerity, and efforts shown by all the in dividuals from whom manuscripts have been solicited. Despite much propaganda to the contrary, there can never be any serious question that pest-control chemicals and food-additive chemicals are essential to adequate food production, manufacture, marketing, and storage, yet without continuing surveillance and intelligent control some of those that persist in our foodstuffs could at times conceivably endanger the public health. Ensuring safety-in-use of these many chemicals is a dynamic challenge, for established ones are continually being dis placed by newly developed ones more acceptable to food tech nologists, pharmacologists, toxicologists, and changing pest-control requirements in progressive food-producing economies. These matters are of genuine concern to increasing numbers of governmental agencies and legislative bodies around the world, for some of these chemioals have resulted in a few mishaps from improper use. Adequate safety-in-use evaluations of any of these chemicals per sisting into our foodstuffs are not simple matters, and they incorporate the considered judgments of many individuals highly trained in a variety of complex biological, chemical, food technological, medical, pharmacological, and tOxicological disciplines.
