Principles of plant pathology ppt

Infectious plant diseases are caused by living organisms that attack and obtain their nutrition from the plant they infect. The plant invaded by the pathogen and serving as its. Principles of plant pathology is an introductory course that offers a broad introduction to plant diseases and the organisms that cause them. Students will gain knowledge of mycology and select. Study of living, non living and other causes of disease or disorder in plants. Plant pathogen and principles of plant pathology lecture no. However, when used in the context of modern medical treatment, the term is often used in a more narrow fashion to refer to processes and tests which fall within the contemporary. Plant pathology university of florida, institute of food. Pathology is the study of the causes and effects of disease or injury. Usually, farmers are worried about the financial losses that plant diseases can cause because of reduced quantity andor quality of the product. Principles of plant pathology pb2014 paperback january 1, 2006 by vidyasekharan p. Plant diseases can be caused by fungi, funguslike organisms flo, bacteria, viruses, nematodes, or parasitic seed plants.

Ppt introduction to plant pathology powerpoint presentation. Gray leaf spot, caused by the fungus cercospora zeaemaydis a, affects corn foliage. One of the hardest things regarding plant pathology. Ten principles of plant pathology sciencebased solutions for. In this course, ou will be introduced to the amazing, microscopic world of plant pathogens and learn how this large and diverse group of microbes impacts our lives every day. Principles of plant disease management is intended to provide a substantive treatment of plant disease management for graduate and undergraduate students in which theoretical and practical elements are combined. Singh exhead and emeritus scientist division of plant pathology indian agricultural research institute new delhi110012. In this article we will discuss about the forecasting of plant diseases. Plant pathology is related to most of the old and new sciences like biology, physics, chemistry, physiology, mathematics, genetics, soil science, biochemistry, biotechnology etc. Point presentation on one of the diseases in their collection and submit the power point. Fundamental principles of plant pathology for agricultural producers paul vincelli, extension plant pathologist. Sharma department of plant pathology, csk hpkv, palampur h. Na description this note explains the following topics.

Reference is made to specific diseases and control practices to illustrate basic principles or strategies. A plant disease is any abnormal condition that alters the appearance or function of a plant. Introduction to principles of plant pathology 4ed paperback jan 01, 2017 singh, r. Basic principles of h f le roux plant pathology basic principles of plant pathology 1 introduction a plant is healthy or normal when it can carry out its physiological functions to the best of its genetic potential. One of the hardest things regarding plant pathology has to do with the timing of disease incidence and when the disease symptoms become observable in the field. Phytoplasmas, which are very small bacteria without cell walls, are mainly carried from plant to plant by insects with piercingsucking mouthparts, such as leafhoppers. Free plant pathology books download ebooks online textbooks. Principles of disease management the history of controlling the diseases is very old, man discovered empirical cultural and physical control practices for crop protection even before the causal nature of plant diseases. General acceptance of the idea that fungi can induce diseases of plant opened the way for. Department of plant pathology, washington state university, pullman, wa maloy, o. Plant diseases vary in incidence from season to season due to differences in the nature and amount of inoculum, environmental conditions, numbers and activity. The word pathology also refers to the study of disease in general, incorporating a wide range of bioscience research fields and medical practices. Plant pathology intro a plant pathologist is a person who studies plant diseases and works to diagnose and control them. Plant disease management the american phytopathological society.

Will introduce you to the basic principles of cellular pathology, discuss major issues in pathology of specific organ systems, introduce you to the principles of diagnostic pathology, and introduce you to novel diagnostic technologies and challenges posed in their translation into clinical practice. Understand and discuss the risks and benefits associated with specific disease management strategies and tactics. Ten principles of plant pathology agriculture and natural. The word pathology comes from two greek words, pathos suffering and logos study. Introduction to plant pathology and environmental impact disease disturbance from plant pathogen or environmental factor that interferes with plant physiology. To give the student an overview of the discipline of plant pathology. See all 2 formats and editions hide other formats and editions. For other plant diseases, however the cost of control is as high or higher than the expected value of the crop. Introduction to plant pathology linkedin slideshare. Plant pathology is the study of plant diseases including.

A plant disease is a dynamic process where a living or nonliving entity interferes with the normal functions of a plant over a period of time. Plant pathology has the following major objectives. The plant pathology department at the university of florida is dedicated to supporting plant health through research in plant and pathogen genetics, plantmicrobe interactions, epidemiology, network analysis, and smart agriculture. Fundamental principles of plant pathology for agricultural. Plant pathology is an applied science that deals with the nature, causes and control of plant diseases in agriculture and forestry.

Plant disease basics and diagnosis penn state extension. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Our faculty are experts in temperate, subtropical and tropical crop diseases and our extension programs are. Ppt plant biotechnology powerpoint presentation free. The first principle prevention includes disease management tactics applied. Students will be able to comprehend and discuss the principles underlying integrated disease management.

Plant disease, an impairment of the normal state of a plant that interrrupts or modifies its vital functions. Introduction plant diseases in the landscape and garden are very important and can be a significant source of frustration and loss to the gardener. Authors are encouraged to indicate whether their submission meets the requirements of an editors choice paper, but the final selection of these papers is an exclusive prerogative of the journal of plant pathology editorial board, and is signed off by the handling associate and senior editors, the four main senior editors and by the editor in. Therefore, plant pathology is the study of the suffering or diseases of plants. Plant pathology, 5th edition, is the most comprehensive resource and textbook that professionals, faculty and students can consult for wellorganized, essential information. The integrated disease management idm involves the need based use of pesticide only when the disease incidence reach economic threshold levels and this will promote the build up of many biocontrol agent in the crop ecosystems. Plant pathology also phytopathology is the scientific study of diseases in plants caused by pathogens infectious organisms and environmental conditions. Principles of plant pathology pp 315 about the course.

This is often possible only after major damage has already been done to the crop, so treatments will be of limited or no use. Education center introductory topics in plant pathology plant disease. This course provides an introduction to the diseases that affect plants and the organisms that cause them. General principles of plant diseases management importance, general principles avoidance, exclusion, eradication, protection and therapy, immunization information on etiology, symptoms, pathogenesis and epidemiology of plant diseases are intellectually interesting and scientifically justified but most important of all they are useful as. Healthy plant normal physiological functions include. Plant pathology pp \pathology, though two years later, bawden and pierie showed the presence of small amount of rna with it.

Definition and history of plant pathology important plant pathogenic organisms different groups fungi, bacteria, fastidious vesicular bacteria, phytoplasmas, spiroplasmas, viruses, viriods, algae, protozoa and phanerogamic parasites with examples of diseases. Important plant pathogenic organisms, general characters of fungi, binomial system of nomenclature, myxomycota, eumycota, zygomycotina, ascomycotina, basidiomycotina, deuteromycotina, pokaryotes. Plant pathology, fifth edition, is the most comprehensive resource and textbook that professionals, faculty and students can consult for wellorganized, essential information. The parasitic organism that causes a disease is a pathogen. Principles of plant disease management 1st edition. In this course students will learn principles of plant pathology through lectures and demonstrations and exercises in laboratory.

Plant disease control principles of plant disease management pathogen exclusion pathogen eradi idication and reductionof inoculum plant protection resistant varieties integrated management epidemic of sudden oak death in big sur photo courtesy of d. Plant biotechnology helps plant pathology in various ways. Generalized symptoms may be classified as local or systemic, primary or secondary, and microscopic or macroscopic. It is a physiological process that affects some or all plant functions. Principles of plant pathology ppt video online download slideplayer. The plant pathology department at the university of florida is dedicated to supporting plant health through research in plant and pathogen genetics, plant microbe interactions, epidemiology, network analysis, and smart agriculture. Plant pathology is that branch of agricultural, botanical or biological science which deals with the study of the causes, etiology, resulting losses and management control of plant. General principles of plant disease management slideshare. Pl path 111 variability in plant pathogens download in. The variety of symptoms, the internal and external expressions of disease, that result from any disease form the symptom complex, which, together with the accompanying signs, makes up the syndrome of the disease.

Introductory course in plant pathology plp 408508 or equivalent. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. General principles of plant diseases management importance. The first principle prevention includes disease management tactics applied before infection i. The pathogens mycoplasma like organisms, spiroplasmas and rickettsialike organisms 6. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Naz syed associate professor department of plant pathology.

The traditional method of identifying plant pathogens is through visual examination. Bacteria can be carried from plant to plant in droplets of water by wind, rainsplash, insects, and equipment figure 5. Principles of plant pathology pdf 79p by tamil nadu agricultural university file type. A free powerpoint ppt presentation displayed as a flash slide show on id. Basic plant pathology basic plant pathology jennifer davidson. Plant diseases can be classified as infectious or noninfectious, depending on the causative agent. More often than not, disease is present in most fields, regardless of specific crop, by the end of the season.

Thus idm, a greener alternative to the conventional use of chemicals, is an attempt to promote natural, economic and. Introduction plant pathology guidelines for master. This thoroughly revised edition is 45% larger, covering new discoveries and developments in plant pathology and enhanced by hundreds of new color photographs and. The vital role of plant pathology in attaining food security and food safety for the world cannot be overemphasized.

Pathogen is grown in pure culture and its characteristics documented. Yield loss can result when the upper leaves are killed during grain fill. By tom allen, extension plant pathologist august 31. Principles of plant pathology pdf 79p download book. Ipm is the practice of using a range of measures to prevent and manage disease in crops and gardens start with diseasefree plants cultural hygiene control growing environment. Consistent isolation of a pathogen from symptomatic host tissue. Some plant diseases are easily controlled by one or another method. Numerous fungi, bacteria, viruses, and nematodes are pathogens of corn and. General principles of plant diseases management importance, general principles avoidance, exclusion, eradication, protection and therapy, immunization.

Plhl 4000 general plant pathology louisiana state university. The disease triangle and influence of the environment. Forecasting of plant diseases is predicting the occurrence of disease in an epiphytotic form in a particular area. The material focuses on the four interacting factors necessary for disease to occur. Numerous fungi, bacteria, viruses, and nematodes are pathogens of corn and soybean in iowa. Plant diseases caused by fungi and flo are common during wet, humid seasons. For the purposes of this particular update i will focus exclusively on foliar fungal diseases. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Learn the terminology of plant pathology and microbiology 3. Important plant pathogenic organisms different groups fungi, bacteria, fastidious vesicular bacteria, phytoplasmas, spiroplasmas, viruses, viriods, algae, protozoa and phanerogamic parasites with examples of diseases caused by them. To save plants from irreparable damage by pathogens, farmers have to be able to identify an infection even before it becomes visible.