Download or read book Westcott s Plant Disease Handbook written by Cynthia Westcott and published by Springer Science & Business Media. This book was released on 2008 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Westcott’s Plant Disease Handbook, 7th Edition, should be useful to anyone with a keen interest in gardening. The seventh edition uses the traditional convenient format of previous editions providing easy access to essential information quickly with special dictionary-type entries on plant hosts and on symptoms. It provides useful cross references, indexes, illustrative plates of 34 key diseases, and 40 black and white illustrations of other diseases. New and updated material includes: significant taxonomic changes in fungi, bacteria, viruses and nematodes, and recently discovered diseases and new hosts for previously known plant-pathogens.

Download or read book The Life History of Anisogramma Anomala Pk E M ller Diaporthaceae and Its Pathological and Epidemiological Association with Corylus Avellana L written by Timothy Ross Gottwald and published by . This book was released on 1979 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eastern Filbert Blight, caused by Anisogramma anomala (Peck) E. Miller, was first discovered in the Pacific Northwest in 1974. Orchard experiments suggest that the fungus completes its life cycle in two years. Infection takes place from mid-January to May, mainly through mite-galled-buds infested with an Eriophyid mite, Phytocoptella avellanae Nal. Ascospores are presumed to be the only infectious propagules since no conidial stage has been observed during the four years of investigation. After a latency period of 12-16 months, the fungus can be detected in the primary phloem and vascular cambium and later penetrates deep into the xylem. Stromata are initiated during May as indicated by a somatic pressure cushion which gradually crushes and splits the bark to expose the ectostroma. Dense aggregates of smaller fungal cells arise deep within the endostroma in 2-3 layers forming primordia. The primordia consist of an "outer coil" of filamentous hyphal cells terminated by a non-functional trichogyne, surrounding an "inner coil" of more isodiametric ascogenous cells. The centrum arises from this "inner coil" as a loose clump of ascogenous cells which lack croziers. Mononucleate asci arise from these ascogenous cells near the end of July. Meiosis occurs from mid-July through August and each ascus cleaves eight unequally two-celled hyaline ascospores. A. anomala causes a simple interest type of disease during a single season but is considered a compound interest type in longstanding orchards. Disease severity, measured as the percent of plant surface attacked, was evaluated for individual cankers, for individual trees and for orchards as a whole. Disease increase was found to be r=0.265, r=1.084 and r=1.240 units/year respectively. The disease spread south from the original focus which was determined to be a group of five orchards, in the northwest quadrant of the diseased area. Spread of inoculum over long distances is infrequent. Therefore, established secondary foci to the south are more likely to be the source of inoculum to nearby orchards and pose the greatest threat of spread into orchards further south in the main filbert growing areas of Oregon. Various inoculation methods were tested on several filbert tissues. Hypodermic infiltration of ascospores into mite-galled-buds and into healthy non-infested buds, proved to be the only successful inoculation methods giving 46.5 and 29.0 percent infection respectively. There was a general increase in percent infection as inoculation dates approached the natural infection period which was determined to extend from February through May and to correlate with the duration of rainfall during the same season. Ascospores were recovered continuously from each of ten different exposure periods from 26 November to 3 April. Spore release is thought to be at least six months in duration extending well beyond the spore trapping dates, and thus lasts longer than the natural infection period. Heaviest discharge was recorded during periods of constant wetting of the stromata. Free moisture on the stromata induces inoculum discharge which is further dispersed by rain splash. Natural infection occurs when the inoculum is washed between the scales of P. avellanae infested buds. Hypodermic infiltration of ascospores into mite-free-buds also resulted in a substantial percent infection. Following infection there is normally a 12-16 month latency period for symptom expression. Under greenhouse conditions symptoms developed within six months of inoculation. Culture isolation taken from diseased and healthy filbert twigs resulted in a substantial recovery of Phomopsis sp., from 36.4 to 93.2 percent. Therefore although Phomopsis was isolated from cankered tissue it is unlikely that it is more than an epiphyte.

Download or read book Studies in the Morphology and Life History of Anisogramma Anomala written by T. R. Gottwald and published by . This book was released on 1979 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detecting and Controlling Eastern Filbert Blight Anisogramma Anomala written by Jay William Pscheidt and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Biology in Plant Pathogenesis and Disease Management written by P. Narayanasamy and published by Springer Science & Business Media. This book was released on 2008-06-12 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations on various aspects of plant-pathogen interactions have the ultimate aim of providing information that may be useful for the development of effective crop disease management systems. Molecular techniques have accelerated the formulation of short- and long-term strategies of disease management. Exclusion and eradication of plant pathogens by rapid and precise detection and identification of microbial pathogens in symptomatic and asymptomatic plants and planting materials by employing molecular methods has been practiced extensively by quarantines and certification programs with a decisive advantage. Identification of sources of resistance genes, cloning and characterization of desired resistance genes and incorporation of resistance gene(s) into cultivars and transformation of plants with selected gene(s) have been successfully performed by applying appropriate molecular techniques. Induction of resistance in susceptible cultivars by using biotic and abiotic inducers of resistance is a practical proposition for several crops whose resistance levels could not be improved by breeding or transformation procedures. The risks of emergence of pathogen strains less sensitive or resistant to chemicals have been reduced appreciably by rapid identification of resistant strains and monitoring the occurrence of such strains in different geographical locations.

Download or read book Plant Breeding Reviews Volume 45 written by Irwin Goldman and published by John Wiley & Sons. This book was released on 2021-10-21 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Breeding Reviews presents state-of-the-art reviews on plant genetics and the breeding of all types of crops by both traditional means and molecular methods. Many of the crops widely grown today stem from a very narrow genetic base; understanding and preserving crop genetic resources is vital to the security of food systems worldwide. The emphasis of the series is on methodology, a fundamental understanding of crop genetics, and applications to major crops.

Download or read book Systematics and Evolution written by David J. McLaughlin and published by Springer. This book was released on 2015-03-30 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes treatments of systematics and related topics for both fungi and fungus-like organisms in four eukaryotic supergroups, as well as specialized chapters on nomenclature, techniques and evolution. These organisms are of great interest to mycologists, plant pathologists and others, including those interested in the animal parasitic Microsporidia. Our knowledge of the systematics and evolution of fungi has made great strides since the first edition of this volume, largely driven by molecular phylogenetic analyses. Consensus among mycologists has led to a stable systematic treatment that has since become widely adopted and is incorporated into this second edition, along with a great deal of new information on evolution and ecology. The systematic chapters cover occurrence, distribution, economic importance, morphology and ultrastructure, development of taxonomic theory, classification, and maintenance and culture. Other chapters deal with nomenclatural changes necessitated by revisions of the International Code of Nomenclature for algae, fungi and plants, including the elimination of separate names for asexual states, as well as methods for preservation of cultures and specimens, character evolution and methods for ultrastructural study, the fungal fossil record, and the impact of whole genomes on fungal studies.

Download or read book Growing Hybrid Hazelnuts written by Philip Rutter and published by Chelsea Green Publishing. This book was released on 2015 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growing Hybrid Hazelnuts is the first comprehensive guide for farmers interested in how to get started growing hybrid hazelnuts, a crop designed from the very outset to address a host of problems with conventional modern agriculture. Once hybrid hazelnuts are established, no plowing, or even cultivation, is necessary. Dramatically improved infiltration rates prevent water from running off of fields, regardless of soil type.

Download or read book Recent advances in hazelnut corylus spp written by Valerio Cristofori and published by Frontiers Media SA. This book was released on 2023-02-08 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Westcott s Plant Disease Handbook written by R. Kenneth Horst and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 1031 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was a compliment to me to be asked to prepare the fourth edition of Westcott's Plant Disease Handbook, and the decision to accept the respon sibility for the fourth edition, the fifth edition, and now the sixth edition was not taken lightly. The task has been a formidable one. I have always had great respect professionally for Dr. Cynthia Westcott. That respect has grown considerably with the completion of the three editions. I now fully realize the tremendous amount of effort expended by Dr. Westcott in de veloping the Handbook. A book such as this is never finished, since one is never sure that everything has been included that should be. I would quote and endorse the words of Dr. Westcott in her preface to the first edition: "It is easy enough to start a book on plant disease. It is impossible to finish it. . . " This revision of the Handbook retains the same general format contained in the previous editions. The chemieals and pesticides regulations have been updated; major taxonomie changes have been made in the bacteria, fungi, nematodes and viruses; the changing pieture in diseases caused by viruses and/ or viruslike agents have been described. New host plants have been added, and many recently reported diseases as weIl as previously known diseases listed now on new hosts have been included.

Download or read book Eastern Filbert Blight written by and published by . This book was released on 2015 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diseases of Temperate Zone Tree Fruit and Nut Crops written by Joseph M. Ogawa and published by UCANR Publications. This book was released on 1987-06-01 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: UC's classic encyclopedic work on the diseases and disorders affecting pome fruits, stone fruits, nuts, olives, figs and several minor fruits grown in temperate zone areas. This comprehensive volume gives the history, causes, symptoms, and control methods for nearly 200 diseases. Includes 56 pages of helpful color plates, an index and extensive references. This is a must have for production consultants, plant pathologists, agricultural libraries and agricultural educators.

Download or read book The Plant Disease Reporter written by and published by . This book was released on 1976-07 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library of Congress Subject Headings written by Library of Congress and published by . This book was released on 2013 with total page 1708 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Plant Disease Bulletin written by and published by . This book was released on 1976 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Westcott s Plant Disease Handbook written by R. K. Horst and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1242 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was a compliment to me to be asked to prepare the fourth edition of Westcott's Plant Disease Handbook, and the decision to accept the responsi bility for the fourth edition and now the fifth edition was not taken lightly. The task has been a formidable one. I have always had a great respect professionally for Dr. Cynthia Westcott. That respect has grown considerably with the completion of the two editions. I now fully realize the tremendous amount of effort expended by Dr. Westcott in developing the Handbook. A book such as this is never finished, since one is never sure that everything has been included that should be. I would quote and endorse the words of Dr. Westcott in her preface to the first edition: "It is easy enough to start a book on plant disease. It is impossible to finish it. " This revision of the Handbook retains the same general format contained in the previous editions. The chemicals and pesticides regulations have been updated; a few taxonomic changes have been made in the bacteria, fungi, and mistletoes; the changing picture in diseases caused by viruses and/or viruslike agents has been described. A few new host plants have been added, and many recently reported diseases as well as previously known diseases listed now on new hosts have been included. In addition, photographs have been replaced where possible, and the color photograph section has been retained.

Download or read book Cold Hardy Fruits and Nuts written by Allyson Levy and published by Chelsea Green Publishing. This book was released on 2022-03-11 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: *2023 GardenComm Media Awards Silver Laurel Medal of Achievement The easy-to-use resource for growing healthy, resilient, low-maintenance trees, shrubs, vines, and other fruiting plants from around the world—perfect for farmers, gardeners, and landscapers at every scale. Illustrated with more than 200 color photographs and covering 50 productive edible crops—from Arctic kiwi to jujube, medlar to heartnut—this is the go-to guide for growers interested in creating diversity in their growing spaces. "[Levy and Serrano] go way beyond the standard fare. . . . With their help, you’ll be growing persimmons, currants and hazelnuts in no time."—Modern Farmer Cold-Hardy Fruits and Nuts is a one-stop compendium of the most productive, edible fruit-and nut-bearing crops that push the boundaries of what can survive winters in cold-temperate growing regions. While most nurseries and guidebooks feature plants that are riddled with pest problems (such as apples and peaches), veteran growers and founders of the Hortus Arboretum and Botanical Gardens, Allyson Levy and Scott Serrano, focus on both common and unfamiliar fruits that have few, if any, pest or disease problems and an overall higher level of resilience. Inside Cold-Hardy Fruits and Nuts you’ll find: Taste profiles for all fifty hardy fruits and nuts, with notes on harvesting and uses Plant descriptions and natural histories Recommended cultivars, both new and classic Propagation methods for increasing plants Nut profiles including almonds, chestnuts, walnuts, and pecans Fertilization needs and soil/site requirements And much more! With beautiful and instructive color photographs throughout, the book is also full of concise, clearly written botanical and cultural information based on the authors’ years of growing experience. The fifty fruits and nuts featured provide a nice balance of the familiar and the exotic: from almonds and pecans to more unexpected fruits like maypop and Himalayan chocolate berry. Cold-Hardy Fruits and Nuts gives adventurous gardeners all they need to get growing. Both experienced and novice gardeners who are interested in creating a sustainable landscape with a greater diversity of plant life—while also providing healthy foods—will find this book an invaluable resource.