Index of plant pathogens and the diseases they cause in cultivated plants in South Africa = by G. J. M. A. Gorter Download PDF EPUB FB2
Get this from a library. Index of plant pathogens and the diseases they cause in cultivated plants in South Africa = Indeks van Plantpatogene en die siektes wat dit in gekweekte plante veroorsaak in Suid-Afrika.
[G J M A Gorter]. Res. 1 () Gorter, G.J.M.A. Gorter, Index of plant pathogens and the diseases they cause in cultivated plants in South Africa Sci. Bull. Dep. Agric. Tech. Serv. Rep. Afr. () GÃrter, G.J.M.A. GÃrter, Supplement to index of plant pathogens (II) and the diseases they cause in cultivated plants in South Cited by: 5.
Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic included are ectoparasites like insects.
Index of plant pathogens and the diseases they cause in cultivated plants in South Africa. RepubJic of South Africa. Department of Agricultural Technical Services, Science Bulletin No. Extensive surveys of the five banana-growing areas in South Africa were conducted between andwhich resulted in the collection of various Sigatoka-like leaf spot samples.
The use of pathogens for the biological control of the weeds Acacia saligna (Labill.) Wendl., Hakea sericea Schrad., Ageratina adenophora (Spreng.) K. and R., and Ageratina riparia (Regel) K.
and R. in South Africa over the last decade is reviewed. An Australian gall-forming rust fungus, Uromycladium tepperianum (Sacc.) McAlp., has been introduced and, sinceinoculated onto Ac.
saligna Cited by: The use of plant pathogens for biological weed control in South Africa M.J. Morris Plant Protection Research Institute, Private Bag XSO I 7, StellenboschSouth Africa (Accepted 25 March ) ABSTRACT Morris, M.J., I.
The use of plant pathogens Cited by: A to Z OF PLANT DISEASES. T his page contains a list of alphabetically arranged thumbnail images of plant diseases commonly found on various agricultural crops and ornamental plants in South Africa and can be purchased for use in publications.
If you wish to order any original size image(s) send an e-mail to [email protected] with the full caption of the image(s) for a quote on cost. that can cause infection. That portion of the pathogen brought into contact with the host.
– Spores; mycelial fragments or structures • Predispose - weaken plants; increase effects of infectious diseases. – Temperature, moisture, wind, light, soil pH, nutrition, herbicides. The Division, located in Roodeplaat East of Pretoria, provides specialist research and routine diagnostic and advisory services on plant diseases such as soil-borne diseases; seed-borne diseases and foliar diseases using traditional and molecular techniques on fungal, bacterial and viral pathogens with emphasis on those affecting crops to.
Role of Wild and Cultivated Plants in the Epidemiology of Plant Diseases in Israel. Role of Weeds in the Incidence of Virus Diseases J E Duffus Annual Review of Phytopathology The Structure of Pathogen Populations in Natural Plant Communities Interactions of Trichoderma with plants and plant pathogens.
Induction of systemic responses by Cited by: Wikimedia Commons has media related to Diseases and disorders of plants.: This category includes economically significant plant diseases and the organisms that cause them including, fungi, bacteria, protists and more information on plant pathology see insects that transmit plant pathogens see Insect vectors of plant pathogens.
The book is designed to give students and researchers a background in the principles of plant pathology and of managing plant diseases. The agents of disease and their methods of infection, survival and dispersal are described as well as the responses of plants to infection.
Index of plant pathogens and the diseases they cause in cultivated crops by G.J.M.A. Gorter appears. Symptoms of geeldikkop induced in sheep, demonstrating the involvement in this disease of Pithomyces chartarum on Tribulus terrestris.
An annotated checklist and selected bibliography of South African fungi by G.J.M.A. Gorter by: 9. This book is a completely rewritten update of the book Plant Protection, edited by J. Brown. It contains 33 chapters written by different authors and arranged in 5 parts.
Part 1 contains 11 chapters describing the agents that cause disease. Part 2 contains 4 chapters describing the survival and dispersal of plant parasites. Infection processes, epidemiology and crop-loss assessment are.
Transboundary plant pests and diseases affect food crops, causing significant losses to farmers and threatening food security. The spread of transboundary plant pests and diseases has increased dramatically in recent years.
Globalization, trade and climate change, as well as reduced resilience in production systems due to decades of agricultural intensification, have all played a part.
Foliar pathogens reduce amount of photosynthetic tissue. Root pathogens interfere with water and mineral uptake. Vascular pathogens limit water and nutrient movement within the plant. Structural pathogens attack the structure, like wood decay fungi. Discover Book Depository's huge selection of Plant Pathology & Diseases Books online.
Free delivery worldwide on over 20 million titles. At least three common cucurbit leaf beetles attack pumpkins in South Africa.
They are all black and orange and damage flowers and leaves. Control: Cucurbit beetles must be controlled when they are first noticed in the spring. Daily scouting is essential during the emergence and early life of the crop while the plants are small and susceptible. the plant they infect.
The parasitic organism that causes a disease is a pathogen. Numerous fungi, bacteria, viruses, and nematodes are pathogens of corn and soybean in Iowa. •The plant invaded by the pathogen and serving as its food source is referred to as a host.
In South Africa Powdery mildew is often associated with the dry hot summer months and during winter in heated greenhouses. This can easily be explained as follows: Spore production, germination and infection take place when the humidity is high (90 – 99%) and the temperature cool (about 16.
Australian Acacias, a group of plants that has been planted globally for a range of uses, but has escape plantation areas and became invasive in many countries, are particularly problematic.
Acacia mearnsii is one of these invasive alien plant species and in South Africa it is also an important forestry by: 2. Plant Epidemics Case Studies, ramifications, and emerging strategies for combating plant diseases This slide show was adapted from a December presentation by James Schoelz, Ph.D., at the Missouri Summit on Agroterrorism.
Schoelz is Professor and Chair of the Department of Plant Microbiology and Pathology at the University of Size: 1MB. Late Blight Sources 0 Infected Potato, Tomato, Petunia, Hairy nightshade 0 Family: Solanaceae 0 Home gardens can be source of infective propagules that threaten other small and large plantings 0 In some parts of the world, the pathogen can survive outside of the host as oospores – special structures that survive in soil for long periods of time 0 in Europe, Mexico.
Guidelines for Identification and Management of Plant Disease Problems: Part II. Diagnosing Plant Diseases The study of pathogens and the diseases they cause is the traditional concern of plant pathologists.
The specialized plants, but must enter the plant through a wound or natural. Gorter GJMA () Index of plant pathogens and the diseases they cause in cultivated plants in South Africa. Republic South Africa Dept Agric Techn Serv Pl Protect Res Inst Sci Bull – Google Scholar.
Dear All, I am pleased to announce the launching of a new book titled “Insects of cultivated Plants and Natural Pastures in Southern Africa” by Gerhard Prinsloo and Vivienne Uys.
The pages thick book deals with insect pests of 75 crops including field crops, vegetables crops, pastures, horticultural and ornamental plants.
Many of these. planted to tomatoes in in South Africa (Anonymous ), creating a direct employment opportunity for 16 people. A new virus disease of tomato is cause for concern. Currently, it is confined to the areas of Onderberg in Mpumalanga, and Pongola and Nkwalini in KwaZulu-Natal, and Trichardtsdal.
The main categories of microbes that cause plant diseases which are fungi, bacteria, viruses and nematodes. Fungi account for around 85 percent of plant diseases followed by viruses, bacteria and nematodes.
Environmental factors are important in the development of plant diseases and determine whether the diseases become epidemic. Abstract.
Gerbera daisy, Gerbera jamesonii H. Bolus ex. Hooker, is a spectacular cut flower popular around the world for its bold colors.
Crop production is challenged by numerous diseases affecting petal quality and plant health. Powdery mildew, caused by Golovinomyces cichoracearum or Podosphaera sp., is the most common foliar disease of Gerbera daisies, but they are also plagued by. The Study of Plant Diseases. loss. Furthermore, the tendency of modern times is ever towards a more and more intensive cultivation of the soil, with the result that disease becomes increasingly prevalent.
As an indication of the extreme possibilities of a fungus epidemic one may mention the.Higher plants provide the habitat for a wide range of pathogens, of which viruses are some of the most prevalent. They affect different crop species, including those of great importance in agriculture. The effects of viruses are sometimes benign but they usually decrease crop growth and yield and may cause serious losses.
This has long.The study of plant diseases are important as they cause loss to the produce. The various types of losses occur in the field, in storage or any time between sowing and consumption of produce. The diseases are responsible for direct monitory loss and material loss.
Further, these diseases are harmful for the society as they cause stomach.