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Topic: Plant diseases

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Phytopathology

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	NationalPak.Com "STUDY OF PLANT DISEASES" (Site not responding. Last check: 2007-11-07)
		The causes of plant diseases are summarized in Fig.
		Host is the plant on which many pathogens may be present at a time but most of the causal organisms (pathogen) have their specific life cycle with particular host species, genus or family, on which they may survive and cause disease.
		The disease management means to check, prevent or control disease by a judicious use of various methods of control, with the intention of reducing the incidence (damage or harm) caused by disease to an economically acceptable level.
	www.nationalpak.com /plantdiseases.asp (4631 words)

	Plant Diseases Development and Management
		Examples of common bacterial diseases include bacterial blights of dry beans, bacterial blights and fl chaff of wheat and barley, ring rot and flleg of potato, fireblight of apples and related plants, bacterial wilt of cucumber and muskmelon, angular leafspot of cucumber, and bacterial speck and spot of tomato.
		Delayed planting of winter wheat also reduces the risk of survival and buildup of the mite in the fall of the year and exposure of the wheat crop to high wheat curl mite populations.
		The bacterium is carried from plant to plant by the beetle and overwinters in the beetle.
	www.ag.ndsu.edu /pubs/plantsci/pests/eb31w.htm (7476 words)

	Plant Diseases in Arkansas
		Infectious plant diseases result from an interaction of a causal agent (pathogen) and a plant (host) when the time and environmental conditions are conducive for the interaction.
		Examples of severe losses caused by infectious plant diseases include: Cereal rusts and smuts, Ergot of wheat and rye, Dutch elm disease, Late blight of potato, Chestnut blight, Plum Pox, Soybean rust, Karnal Bunt of wheat, and citrus canker.
		Plant disease management is often based on one or more of the following methods: (1) Growing resistant varieties, (2) chemicals, (3) crop rotation, and (4) cultural practices.
	www.aragriculture.org /diseases/default.htm (275 words)

	Ohio State \| Plant Pathology \| 201: Social Impact of Plant Diseases (Site not responding. Last check: 2007-11-07)
		Plant Pathogenic Organisms: a simplified model disease cycle, decay of fungi in foods and trees, ergotism, grain mycotoxins, edible fungi, rusts and smuts, genetic resistance, economic considerations, hallucinogens, witch hunts.
		Plant pathogenic viruses: importance of virus diseases, tobacco mosaic virus and the Nobel Prize, virus free tissue culture of crops.
		Environmental diseases without pathogens: Abiotic diseases, impact of air, water, soil pollution in the development of a disease in the absense of a pathogenic organism, impact on regulatory legislation, political and economic impact in society.
	plantpath.osu.edu /courses/201-cal.php (426 words)

	Department of Plant Pathology
		Plant pathology--the scientific study of plant diseases--is the "medical profession" of the plant world whose goal is the maintenance of plant health and efficiency.
		The control of plant diseases is essential to the efficient production of food for the world's population, as well as for production of fiber, lumber, pharmaceuticals and ornamentals.
		Since plant disease is the result of unfavorable interaction of plants with living and nonliving agents, the understanding and control of plant diseases requires a knowledge of all these elements.
	plantpath.wsu.edu /aboutplantpath (461 words)

	IPM : Reports on Plant Diseases : Illinois Corn Disease Management Program
		Approximately 30 different diseases are known to cause economic loss of yield and grain quality to corn in Illinois.
		Diseases are often most severe where there is an excess of nitrogen and/or a lack of potassium.
		Disease control programs are based on an understanding of host and pathogen biology and the factors involved in infection and disease development.
	www.ipm.uiuc.edu /diseases/series200/rpd212 (1089 words)

	Dept. of Plant Path. > Courses
		Nature and significance of representative insects and diseases of natural and planted forests with emphasis on their control through manipulation of basic ecological and biological factors.
		The course considers plant diseases and symbioses at all levels, from molecular and genetic to ecological and integrative, with particular emphasis on molecular biology.
		A graduate course designed to acquaint students with the ecology of plant pathogens, plant epidemiology, and the theory of disease control including the role of resistance breeding in the management of plant disease.
	www.plantpath.wisc.edu /courses.htm (915 words)

	Phytopathology - Wikipedia, the free encyclopedia
		The fungal plant pathogens themeselves fall into to major groups, the biotrophs which feed from living plant tissue and the necrotrophs which kill plant cells and then live off the nutrients released.
		Normally plant viruses only cause a loss of yield and therefore it is not economically viable to try to control them.
		Plant viruses must be transmitted from plant to plant by a vector.
	en.wikipedia.org /wiki/Phytopathology (846 words)

	Ohio State Plant Pathology \| The Plant Health Management Major (Site not responding. Last check: 2007-11-07)
		In fact, most people are totally unaware of plant health because they are unfamiliar with the many types of diseases and their causes in the environment.
		The faculty in Plant Pathology have received advanced degrees from distinguished universities and have demonstrated exceptional capabilities in teaching, research and service in the state, national and international arenas.
		Areas of specialty of the faculty include: fungal diseases, plant virology, bacterial diseases, plant nematology, physiology of pathogenesis, molecular biology and physiology of pathogens, ecology of root rotting microorganisms, ecology of foliar pathogens, genetics of resistance, chemical and biological control of plant diseases, and disease of field crops, fruits, vegetables, turfgrasses and ornamental crops.
	plantpath.osu.edu /phmm.php (882 words)

	City of Austin - Grow Green - Plant Diseases
		Because there are several different fungi that cause root rots, have the disease diagnosed at the Texas A & M Plant Disease Lab or by Extension personnel before applying fungicide.
		Bacterial disease that causes rapid flening and dessication of blooms and foliage.
		Diseased plants should be removed and destroyed to prevent infection of other plants by sucking insects that move from plant to plant.
	www.ci.austin.tx.us /growgreen/disease.htm (864 words)

	Greenleaf Plant Diseases
		The symptoms are the stunting of the plant, sparse or yellow foliage, branch dieback and the slow decline of the plant.
		Description: Powdery mildew is a disease caused by fungi that grow on the surface of a plant.
		Among the plants susceptible to rust are turfgrasses, roses, snapdragon, geranium hollyhock and mahonias.
	www.greenleaf.com /main/r_plan_d.asp (1264 words)

	World Chocolate Production: The Impact of Plant Diseases
		We as plant pathologists and microbiologists have as our mandate to discover and devise means to reduce disease losses and to save chocolate for the enthusiastic consumers of the world.
		The disease is caused by a complex of species of Phytophthora (the genus named by Anton de Bary in 1876 as “plant destroyer”) (5).
		Breeding for disease avoidance may be one of the safest methods to reduce field losses, as this form of resistance is less vulnerable to adaptive changes by the pathogens.
	www.plantmanagementnetwork.org /pub/php/review/cacao (5206 words)

	Research Guide: Plant Diseases, UM Libraries
		Plant and Insect Parasitic Nematodes (http://nematode.unl.edu/) is a resource containing introductory material on the study of nematodes, the "most numerous multicellular animals on earth."
		Plant Facts: Disease and Insect Image Collection (http://plantfacts.osu.edu/pest/) is a searchable database of images featuring plant diseases and insects from Ohio State University.
		Plants and Crops: Diseases, Pests, and Weeds (http://www.nal.usda.gov) is maintained by the
	www.lib.umd.edu /guides/plant_diseases.html (1347 words)

	Controlling Plant Diseases \| NRCS
		Plants that are growing under stress from lack of light, too much or too little moisture, or inadequate nutrition are more susceptible to disease.
		Plants that are adequately fertilized tend to withstand attack from disease organisms better than under or over nourished plants.
		For diseases to get established, three things are needed: 1) a susceptible plant, 2) the disease organism, and 3) the proper conditions of light, temperature, and humidity for the disease to develop.
	www.nrcs.usda.gov /feature/backyard/plantdis.html (453 words)

	PP300 Home
		Plants are important sources of compounds used by industry, human health professions and energy sources.
		Thus, plant health is paramount to maintaining a stable and economic source of food, feed, fiber and industrial plant products.
		You are about to begin a journey into the world of Plant Pathology, the study of plant diseases and plant health.
	www.plantpath.wisc.edu /pp300-UW (170 words)

	Plant Disease Overview - APSnet
		Plant Disease is the leading international journal for rapid reporting of research on new diseases, epidemics, and methods of disease control.
		Plant Disease ranked in the top 10 journals for impact on research and teaching efforts in the crop sciences according to Literature of Crop Science, a project published by Cornell University press.
		Agronomists, bacteriologists, biochemists, biologists, botanists, cell biologists, chemists, ecologists, entomologists, foresters, geneticists, horticulturists, microbiologists, molecular biologists, mycologists, nematologists, plant pathologists, plant physiologists, seed pathologists, soil scientists, virologists, and weed scientists.
	www.apsnet.org /pd (214 words)

	Coop Media "Plant Disease" Titles
		Presents illustrations of 36 diseases and physiological disorders affecting evergreens in Wisconsin.
		An introduction to plant diseases and pathogens and their control.
		A disease to some, corn smut or huitlachoche, is considered a culinary delicacy to many.
	www.uwex.edu /ces/media/catalog/plantdis.html (879 words)

	Plant Diseases
		Your plants may "burn" or have a reaction to what you are using in excessive heat.
		It is recommended for plants that already have powdery mildew to hose down all the infected leaves prior to treatment.
		The common horsetail plant, which is very invasive, is rich in silicon and helps plants to resist fungal diseases via increasing their light absorbing capabilities.
	www.ghorganics.com /page15.html (1946 words)

	Plant Pathology Department, University of Kentucky
		M.S. in Plant Pathology, University of Wisconsin-Madison, 1970
		Hartman, J. Chapter 79, Sycamore and Planetree Diseases, In: Diseases of Woody Ornamentals and Trees in Nurseries, 355-359.
		INRA and apple disease research in the Loire Valley Region of France.
	www.ca.uky.edu /agcollege/plantpathology/people/hartman.htm (384 words)

	Introduction, An Online Guide to Plant Disease Control, Oregon State University
		Management of plant diseases is based first on an accurate diagnosis since plant problems can be due to environmental, physiologic, entomological or management problems as well as plant pathogens or a combination of these problems.
		The entire plant disease guide (disease descriptions, articles, and images) is contained within a DBase V database, originally created with Microsoft Access, and accessed using Allaire's ColdFusion Application Server.
		Botany and Plant Pathology as well as non-monetary contributions from the Department of Extension and Experiment Station Communications; the College of Agricultural Sciences, and the staff of Information Services.
	plant-disease.ippc.orst.edu /intro.cfm (810 words)

	Department of Plant Pathology
		Fungal diseases of grain legumes, ecology and epidemiology of grain legume diseases, genetics of host-pathogen interactions.
		Small grain diseases (foot and root rots of wheat), ecology and epidemiology of soilborne pathogens, genetics of disease resistance, and chemical control.
		Fungal and bacterial diseases of tree fruits, postharvest pathology, and disease epidemiology.
	plantpath.wsu.edu /people/faculty/index.htm (639 words)

	Plant Pathology Newsletter - March 2000
		He was an Associate Editor of Plant Disease, a Principal Editor of Crop Protection, and served on numerous committees in APS and the Southern Division of APS.
		Albert was recognized for his significant achievements in management of leaf spot diseases of peanut and for his cooperative work on the development and implementation of a risk assessment index for lessening the impact of tomato spotted wilt virus in peanut.
		Leach is an international authority on research in plant physiology, with emphasis on the molecular biology of host-parasite interactions and the mechanisms by which plants resist disease.
	www.plant.uga.edu /printnews/news2000.htm (5627 words)

	Etaerio - A Plant News Weblog: Plant Diseases and Pests
		New research indicates that one of the most destructive diseases of grapes, Pierce's disease, is present in many of the common weeds found in California vineyards.
		The disease arrived in the region last year in shipments of ornamentals from nurseries in California and Oregon.
		UBC Botanical Garden and Centre for Plant Research is a department of the Faculty of Land and Food Systems at The University of British Columbia, Vancouver, Canada.
	www.ubcbotanicalgarden.org /weblog/cat_plant_diseases_and_pests.php (2064 words)

	Cornell University's Plant Disease Diagnostic Clinic Homepage
		The Clinic is designed to provide plant disease diagnostic services for anyone interested in plant diseases.
		Our services include analysis of plant material and soil for bacterial, fungal, viral, and nematode pathogens as well as suggesting appropriate control measures when available.
		If there is an office near you, you may want to contact them for assistance with your plant disease problem.
	plantclinic.cornell.edu (333 words)

	Sampling for Plant Diseases
		Plant diagnostic clinics are operated and maintained to provide County Extension offices with diagnoses and educational programming to maximize economic input, promote environmental integrity by targeting pest control management educational efforts and improve the sustainability of agriculture in Georgia.
		Contact your county Extension office for submission of plant disease and plant insect samples.
		Homeowner IPM specimens may include plant diseases for diagnosis and insects for identification.
	www.plant.uga.edu /Extension/sampling.htm (391 words)

	Plant Diseases-topical (Site not responding. Last check: 2007-11-07)
		Foliage diseases of conifers can be of great importance to the survival and general vigor of these trees in Oklahoma.
		This fact sheet describes the symptoms and control of leaf diseases of common deciduous hardwood trees commonly planted in yards.
		This fact sheet is intended to aid growers in identifying the diseases of leafy crucifer vegetables and to provide general guidelines for managing them.
	pods.dasnr.okstate.edu /docushare/dsweb/View/Collection-395 (615 words)

	Emerging Disease Issues - Plant Diseases
		Browsers that can not handle javascript will not be able to access some features of this site.
		Plant diseases may be caused by pests or viruses.
		This page provides links to Web sites that address plant diseases and pests.
	www.michigan.gov /emergingdiseases/0,1607,7-186-26346_25895---,00.html (39 words)

	Plant Viruses Online - Quick Introduction (Site not responding. Last check: 2007-11-07)
		New users should begin at "VIDE Home" to obtain an overview of the data and its presentation.
		to go to an index of host plant species (organized by family).
		Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.
	image.fs.uidaho.edu /vide (185 words)

	Plant Diseases
		A beautifully illustrated encyclopedic work on the diseases and disorders affecting pome and stone fruits, nuts, olives, figs, and several minor fruits grown in the temperate zone areas - including most of the United States.
		Includes the history, symptoms, and control methods for nearly 200 diseases; 350 color photographs throughout.
		Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.
	www.gardeners-bookstore.com /diseases/bok-pdis.htm (272 words)

	An Online Guide to Plant Disease Control, Oregon State University (Site not responding. Last check: 2007-11-07)
		his site contains the alphabetical (A to Z) text sections of the 2006 Pacific Northwest Plant Disease Management Handbook, part of the OSU Extension Plant Pathology slide collection, as well as photographs taken by our colleagues.
		Control recommendations are based on the unique mix of climate, crops, regulations and growers of the Pacific Northwest and may not be applicable in other areas.
		You may purchase the 2006 PNW Plant Disease Management Handbook by contacting:
	plant-disease.ippc.orst.edu /index.cfm (164 words)

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