Download or read book Studies on the Survival of Microsclerotia of Verticillium Dahliae written by Mary Ann Hawke and published by . This book was released on 1994 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Survival of Microsclerotia of Verticillium Dahliae written by Mary Ann Hawke and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Dynamics of Microsclerotial Formation of Verticillium Dahliae in Cotton Tissue written by Melville Derek Thomas and published by . This book was released on 1977 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Survival of Verticillium Dahliae in Soil written by Schalk Willem Baard and published by . This book was released on 1979 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survival of Verticillium Dahliae in Soil written by Robert Charles Carlstrom and published by . This book was released on 1969 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three Oregon soil types (Chehalis silt loam (CSL), an alluvial soil from the Willamette Valley; Ayre sandy loam (ASL), a volcanic pumice soil from the Central high desert; and Klamath fine sandy loam (KFSL), a basaltic mineral soil from the Klamath Basin) were collected adjacent to fields which had been removed from potato production due to Verticillium wilt caused by the soil-borne fungus Verticillium dahliae kleb. The soils were infested with V. dahliae inoculum composed of individual microsclerotia (MS) or microsclerotia imbedded in stem pieces (SPMS). The infestation level was 100,000 propagules/g soil. The inoculum was derived by fragmenting and screening field-infested potato stems. Each infested soil type was transported to, and incubated at, each of the above geographic locations. Changes in the V. dahliae populations were studied over a five-year period. The inoculum potentials of the surviving N. dahliae populations in soils which had been infested with 1000 propagules/g were bioassayed with eggplants after five years. V. dahliae microsclerotia freshly added to moist soils showed an initial flush of sporulation with a subsequent population decline. Population lows were reached after 71 or 256 days incubation, depending on soil type and geographic location. After reaching lows of 14-45 percent of the original population, all V. dahliae populations showed gradual increases through the remainder of the five-year test period. Final populations were 34-63 percent of the original population. CSL soil and the Corvallis environment exerted a strong influence on V. dahliae sporulation. V. dahliae populations in all three soil types infested with MS inoculum showed periodic population fluctuations of up to four-fold at the Corvallis location through the five-year study. ASL and KFSL soil types suppressed sporulation of V. dahliae at the Redmond and Klamath Falls locations. Organic matter breakdown and subsequent release of V. dahliae propagules from stem piece inoculum was related to soil type and geographic location. After 20 months incubation, organic matter breakdown ranged from 7 percent in the CSL soil at the Corvallis location to 88 percent in the ASL soil at the Klamath Falls location. After five years incubation the inoculum potentials varied with soil type and geographic location. Only 20 percent of the eggplants grown in the CSL soils from Redmond showed symptoms, whereas 100 percent of the plants grown in the KFSL soil from the Corvallis and Klamath Falls locations showed symptoms. The three soil types at three levels of infestation were studied over a 290 day period under controlled conditions of soil moisture and temperature in the laboratory. Upon initial infestation with microsclerotia there were population increases in direct proportion to the level of infestation. Unlike the field experiments, no periodic population fluctuations occurred during the 290 day incubation period. The percent V. dahliae survival after 290 days was inversely proportional to the initial infestation levels in the three soils, while percent survival between soil types was in the order of CSL>ASL>KFSL. A linear regression analysis of Verticillium wilt symptom development in eggplants grown in the three soil types, infested at three levels showed a significant difference between the lowest infestation level and the two higher levels and also between soil types. Symptom development in the KFSL soils were significantly slower and less severe. The number of infection loci/g root was not proportional to the inoculum density in the soil. Infection loci/1000 propagules/g of soil were 4.0 in KFSL soils and 2.4 in ASL soils. Eggplants grown in V. dahliae infested soils showed increased fresh weights at each increased infestation level.

Download or read book Verticillium Wilts written by G. F. Pegg and published by CABI. This book was released on 2002 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: The genus Verticillium Nees represents one of the world's major fungal pathogens, affecting crop plants mostly in the cool and warm temperate regions, it also occurs in sub-tropical and tropical areas. There are some six species which cause severe wilting in trees, herbaceous plants and plantation crops. Other species are responsible for non-wilt diseases of banana and mushroom, another species infects insects.The monograph provides a comprehensive reference source on Verticillium, enabling research workers to see what has already been achieved and to identify the many new areas of research in which original contributions could be made to further the understanding and control of this important pathogen and the disease it causes.

Download or read book A Study on the Growth of Microsclerotia of Verticillium Dahliae Klebahn written by Olʹga Semenovna Zjubrickaja and published by . This book was released on 1936 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Verticillium written by E. C. Tjamos and published by American Phytopathological Society. This book was released on 2000 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 90 scientists worldwide contributed their research to this comprehensive volume on the biology, epidemiology and control of Verticillium, as presented at the Seventh International Verticillium Symposium.Advances in Verticillium Research and Disease Management includes research on molecular biology and vegetative compatibility of Verticillium species and strains; the epidemiology, physiology and host-parasite interactions of Verticillium species; and the management of Verticillium wilt diseases using biological, cultural and chemical means.Future research priorities are also discussed in the areas of taxonomic relations of species and strains, soil microbiology and new disease management approaches.

Download or read book Effects of Flooding on Survival of Sclerotinia and Verticillium in Potato Field Soils of Western Washington written by Jennifer Millera Niem and published by . This book was released on 2011 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fungal Wilt Diseases of Plants written by Marshal Mace and published by Elsevier. This book was released on 2012-12-02 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fungal Wilt Diseases of Plants focuses on wilt diseases caused by the fungal genera Verticillium, Fusarium, and Ceratocystis. Special attention is given to the interactions of physiological, biochemical, and anatomical factors, as these relate to pathogenesis and mechanisms of disease resistance. Organized into 16 chapters, this book begins with a description, in a historical perspective, of the major research themes in fungal wilt diseases. It then looks into the worldwide status of this plant disease. The three subsequent chapters describe the epidemiology and life cycle of the major fungal wilt pathogens in Fusarium, Verticillium, and Ceratocystis. This book also provides an in-depth view of the genetics and biochemistry of these pathogens; the nature of pathogenesis and the effects of wilt pathogens on host-water relations; and the sources and genetics of host resistance in field and fruit crops, vegetable crops, and shade trees. Other chapters are dedicated to the biochemistry, physiology, and the anatomical aspects of resistance and to the progress in the biological and chemical control of these pathogens. This text will be of great value to graduate students and senior research scientists in plant pathology, physiology, and biochemistry, who are specifically involved in studying wilt diseases and host-parasite interactions. It will provide them the detailed background information needed to supplement their specialized research interests.

Download or read book Endophytes for a Growing World written by Trevor R. Hodkinson and published by Cambridge University Press. This book was released on 2019-03-21 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the role of endophytes in food security, forestry and health. It outlines their general biology, spanning theory to practice.

Download or read book Crop Rotation on Organic Farms written by Charles L. Mohler and published by Natural Resource Agriculture and Engineering Service (Nraes). This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rhizoctonia Solani written by J. R. Parmeter and published by Univ of California Press. This book was released on 2023-12-22 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1970. This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived

Download or read book Handbook of Florists Crops Diseases written by Robert J. McGovern and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potato Biology and Biotechnology written by Dick Vreugdenhil and published by Elsevier. This book was released on 2011-08-31 with total page 857 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past 15-20 years major discoveries have been concluded on potato biology and biotechnology. Important new tools have been developed in the area of molecular genetics, and our understanding of potato physiology has been revolutionized due to amenability of the potato to genetic transformation. This technology has impacted our understanding of the molecular basis of plant-pathogen interaction and has also opened new opportunities for the use of the potato in a variety of non-food biotechnological purposes. This book covers the potato world market as it expands further into the new millennium. Authors stress the overriding need for stable yields to eliminate human hunger and poverty, while considering solutions to enhance global production and distribution. It comprehensively describes genetics and genetic resources, plant growth and development, response to the environment, tuber quality, pests and diseases, biotechnology and crop management. Potato Biology is the most valuable reference available for all professionals involved in the potato industry, plant biologists and agronomists. Offers an understanding of the social, economic and market factors that influence production and distribution Discusses developments and useful traits in transgenic biology and genetic engineering The first reference entirely devoted to understanding new advances in potato biology and biotechnology

Download or read book Biological Control of Plant Diseases written by E.C. Tjamos and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers contained in this book were presented at a NATO Advanced Research Workshop (ARW) held at Cape Sounion, Athens, Greece, 19-24 May, 1991. The twenty-eight more comprehensive papers represent the key subjects of the ARW covered by invited speakers. The thirty-four short papers pre sented in a research format are contributions of those invited to participate in the ARW. There was a total of 70 participants from 21 countries. The objectives of the ARW were as follows: to review current knowledge of biological control of plant diseases and plant parasitic nematodes, with emphasis on mechanisms at the molecular, cellular, organismal, and ecosystem level; to examine and expand on current concepts and synthesize new concepts; to identify and prioritize limitations in the use of biological control for plant diseases and nematodes and the scientific research needed to overcome these limitations; and to develop strategies for biological control through management of resident agents or introduction of natural or modified agents.

Download or read book Methods for Research on Soilborne Phytopathogenic Fungi written by Larry L. Singleton and published by American Phytopathological Society. This book was released on 1992 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the most dependable current techniques for the study of soilborne phytopathogenic fungi. Section one presents an overview of general techniques as well as new molecular methods. Section two contains 30 chapters devoted to specific genera (or groups of genera), including information on identification, host range and distribution, isolation, isolate maintenance and storage, and inoculum production and pathogenicity determination. Section three contains basic information on subjects such as soil physical properties, soil temperature, soil moisture, and soil atmosphere. Spiral binding. Annotation copyrighted by Book News, Inc., Portland, OR