Author: Amanda Howland Publisher: ISBN: Category : Grapes Languages : en Pages : 109
Book Description
A major constraint to the production of self-rooted wine grapes (Vitis vinifera) in eastern Washington is plant-parasitic nematodes. Plant-parasitic nematodes can impact grape productivity by limiting water and nutrient uptake, educing physiological changes, and extracting plant nutrients from roots, thereby reducing root biomass, plant vigor, and yield. The most commonly encountered plant-parasitic nematodes in Washington V. vinifera vineyards are Meloidogyne hapla, Mesocriconema xenoplax, Pratylenchus spp., Xiphinema americanum, and Paratylenchus sp.; however, little is known about their biology, distribution, and pathogenicity in this production system. Therefore, the objectives of this study were to 1) determine the spatial distribution of plant-parasitic nematodes in eastern Washington V. vinifera vineyards, and 2) determine the host status of V. vinifera varieties and clones predominantly grown in Washington, and several Vitis spp. rootstocks to M. hapla. For the first objective, two vineyards in eastern Washington were sampled over a two-year period to determine the horizontal and vertical distribution of plant-parasitic nematodes. To achieve the second objective, V. vinifera varieties and clones and Vitis spp. rootstocks were inoculated with M. hapla, grown in the greenhouse, and destructively harvested to determine nematode reproduction. Results from the spatial studies showed that, in general, populations of M. hapla and M. xenoplax were aggregated under irrigation emitters and that population densities of these nematodes decreased with soil depth. While Pratylenchus spp. population densities also decreased with depth, populations of these nematodes were concentrated along the alley ways between vine rows. Paratylenchus sp. and X. americanum were random in both their vertical and horizontal distributions within the vineyards. We also found that soil moisture plays a dominant role in the distribution of fine roots and plant-parasitic nematodes within semi-arid vineyards. Where soil moisture was the highest, fine root biomass and population densities of M. hapla and M. xenoplax were also the highest. The opposite was true for Pratylenchus spp., with higher population densities of this nematode in drier areas of the vineyard. There was no relationship of X. americanum and Paratylenchus sp. population densities with soil moisture. These results show there is potential to only treat a 60 cm area around the vine row when targeting M. hapla and M. xenoplax; however, this strategy would not be effective against X. americanum or Paratylenchus sp. It also appears that Pratylenchus spp. are not parasites of V. vinifera in this production system and that there may not be a need to consider these nematodes from a management perspective. In our host status trials with M. hapla, all of the V. vinifera varieties and clones were excellent hosts for M. hapla, but the magnitude of increase in population size of M. hapla on white (Chardonnay and Riesling) compared to red (Cabernet Sauvignon, Merlot, and Syrah) varieties was significantly greater. White varieties had higher M. hapla eggs/g root and an almost 40% higher reproduction factor value than red varieties. All the Vitis spp. rootstocks screened (Salt Creek, Freedom, Harmony, St. George, Riparia Gloire, 101-14, 3309C, 110R, and 420A) allowed very little or no M. hapla reproduction, and therefore are considered non-hosts. This research will provide Washington grape growers with the knowledge to select appropriate planting material to minimize the impact of M. hapla on grapevines. The results of both studies greatly expand the knowledge of the spatial distribution of plant-parasitic nematodes in semi-arid Washington V. vinifera vineyards as well as the host status of commonly planted V. vinifera varieties to M. hapla.
Author: Michel Luc Publisher: Cabi ISBN: 9780851997278 Category : Technology & Engineering Languages : en Pages : 871
Book Description
This book contains 22 chapters, 2 appendices (of the nematicides and species mentioned throughout the book) and 24 colour plates covering all aspects of practical plant nematology in subtropical and tropical agriculture, including rice, cereals, sweet potatoes, root and tuber crops, food legumes, vegetables, groundnut, citrus, tree and fruit crops, coconut and other palms, coffee, cocoa, tea, bananas, sugarcane, tobacco, pineapple, cotton, other tropical fibres, spices and medicinal plants. It provides practical guidance on the methods of extracting, processing and diagnosing different plant and soil nematodes and on integrated nematode management. This book is intended for those studying and working in the area of crop protection.
Author: Andy Clark Publisher: DIANE Publishing ISBN: 1437903797 Category : Technology & Engineering Languages : en Pages : 248
Book Description
Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Author: M. Wajid Khan Publisher: Springer Science & Business Media ISBN: 9401114889 Category : Technology & Engineering Languages : en Pages : 388
Book Description
Nematode interactions are important biological phenomena and of great significance in agriculture. It is a fascinating subject which is multidisciplinary by nature, and concerns any scientist involved with plant health. There have been marked advances in our knowledge of various aspects of the subject in the last two decades. This study area has been the subject of several reviews, but there was no exclusive text on the subject. This has stressed the need to document the information, developing a unifying theme which treated nematode interactions in a holistic manner. This book is about the inter action of plant-parasitic nematodes with other plant pathogens or root symbionts, the nature of their associations, their impact on the host and con sequential interactive effects on the involved organisms. Since nematodes are at the centre of the theme, the responsibility of understanding of other plant pathogens dealt with in this book is largely delegated to the reader. I have limited the book content to interactions with biotic pathogens and root symbionts only, for various reasons. The book embodies 16 chapters, and attempts to present balanced infor mation on various aspects of nematode interactions with other plant pathogens and root symbionts. Some chapters describe general aspects of the subject. Interactions of nematodes with specific groups of organisms are addressed in the remaining chapters.
Author: Hugo Campos Publisher: Springer Nature ISBN: 3030286835 Category : Science Languages : en Pages : 524
Book Description
This book is open access under a CC BY 4.0 license. This book provides a fresh, updated and science-based perspective on the current status and prospects of the diverse array of topics related to the potato, and was written by distinguished scientists with hands-on global experience in research aspects related to potato. The potato is the third most important global food crop in terms of consumption. Being the only vegetatively propagated species among the world’s main five staple crops creates both issues and opportunities for the potato: on the one hand, this constrains the speed of its geographic expansion and its options for international commercialization and distribution when compared with commodity crops such as maize, wheat or rice. On the other, it provides an effective insulation against speculation and unforeseen spikes in commodity prices, since the potato does not represent a good traded on global markets. These two factors highlight the underappreciated and underrated role of the potato as a dependable nutrition security crop, one that can mitigate turmoil in world food supply and demand and political instability in some developing countries. Increasingly, the global role of the potato has expanded from a profitable crop in developing countries to a crop providing income and nutrition security in developing ones. This book will appeal to academics and students of crop sciences, but also policy makers and other stakeholders involved in the potato and its contribution to humankind’s food security.
Author: Nteranya Sanginga Publisher: CIAT ISBN: 9290592613 Category : Soil fertility Languages : en Pages : 270
Book Description
Forward. A call for integrated soil fertility management in Africa. Introduction. ISFM and the African farmer. Part I. The principles of ISFM: ISFM as a strategic goal, Fertilizer management within ISFM, Agro-minerals in ISFM, Organic resource management, ISFM, soil biota and soil health. Part II. ISFM practices: ISFM products and fields practices, ISFM practice in drylands, ISFM practice in savannas and woodlands, ISFM practice in the humid forest zone, Conservation Agriculture. Part III. The process of implementing ISFM: soil fertility diagnosis, soil fertility management advice, Dissemination of ISFM technologies, Designing an ISFM adoption project, ISFM at farm and landscape scales. Part IV. The social dimensions of ISFM: The role of ISFM in gender empowerment, ISFM and household nutrition, Capacity building in ISFM, ISFM in the policy arena, Marketing support for ISFM, Advancing ISFM in Africa. Appendices: Mineral nutrient contents of some common organic resources.
Author: Britta Folmer Publisher: Academic Press ISBN: 0128035587 Category : Technology & Engineering Languages : en Pages : 558
Book Description
The Craft and Science of Coffee follows the coffee plant from its origins in East Africa to its current role as a global product that influences millions of lives though sustainable development, economics, and consumer desire.For most, coffee is a beloved beverage. However, for some it is also an object of scientifically study, and for others it is approached as a craft, both building on skills and experience. By combining the research and insights of the scientific community and expertise of the crafts people, this unique book brings readers into a sustained and inclusive conversation, one where academic and industrial thought leaders, coffee farmers, and baristas are quoted, each informing and enriching each other.This unusual approach guides the reader on a journey from coffee farmer to roaster, market analyst to barista, in a style that is both rigorous and experience based, universally relevant and personally engaging. From on-farming processes to consumer benefits, the reader is given a deeper appreciation and understanding of coffee's complexity and is invited to form their own educated opinions on the ever changing situation, including potential routes to further shape the coffee future in a responsible manner. - Presents a novel synthesis of coffee research and real-world experience that aids understanding, appreciation, and potential action - Includes contributions from a multitude of experts who address complex subjects with a conversational approach - Provides expert discourse on the coffee calue chain, from agricultural and production practices, sustainability, post-harvest processing, and quality aspects to the economic analysis of the consumer value proposition - Engages with the key challenges of future coffee production and potential solutions
Author: Baozhong Meng Publisher: Springer ISBN: 3319577069 Category : Science Languages : en Pages : 688
Book Description
The domestication of grapes dates back five thousand years ago and has spread to nearly all continents. In recent years, grape acreage has increased dramatically in new regions, including the United States of America, Chile, Asia (China and India), and Turkey. A major limiting factor to the sustained production of premium grapes and wines is infections by viruses. The advent of powerful molecular and metagenomics technologies, such as molecular cloning and next generation sequencing, allowed the discovery of new viruses from grapes. To date, grapevine is susceptible to 64 viruses that belong to highly diverse taxonomic groups. The most damaging diseases include: (1) infectious degeneration; (2) leafroll disease complex; and (3) rugose wood complex. Recently, two new disease syndromes have been recognized: Syrah decline and red blotch. Losses due to fanleaf degeneration are estimated at $1 billion annually in France alone. Other diseases including leafroll, rugose wood, Syrah de cline and red blotch can result in total crop loss several years post-infection. This situation is further exacerbated by mixed infections with multiple viruses and other biotic as well as adverse abiotic environmental conditions, such as drought and winter damage, causing even greater destruction. The book builds upon the last handbook (written over twenty years ago) on the part of diagnostics and extensively expands its scope by inclusion of molecular biology aspects of select viruses that are widespread and economically most important. This includes most current information on the biology, transmission, genome replication, transcription, subcellular localization, as well as virus-host interactions. It also touches on several novel areas of scientific inquiry. It also contains suggested directions for future research in the field of grapevine virology.
Author: Rizwan Ali Ansari Publisher: Springer Nature ISBN: 981154087X Category : Science Languages : en Pages : 401
Book Description
This book illustrates the currently available strategies for managing phytonematodes. It discusses the latest findings on plant-pathogen-microbiome interactions and their impacts on ecosystems, and provides extensive information on the application of microorganisms in the sustainable management of phytonematodes. This is followed by an in-depth discussion of the application of potential strains of biocontrol fungi, endophytes and actinomycetes to enhance plants’ ability to fend off phytonematode attacks, leading to improved plant health. In conclusion, the book addresses new aspects like the biofabrication of nanoparticles and their application in plant disease management, and presents an extensive list for further reading.
Author: Amanda Howland
Author: Michel Luc
Author: Andy Clark
Author: M. Wajid Khan
Author: Hugo Campos
Author: Matteo Garbelotto 
Author: Nteranya Sanginga
Author: Britta Folmer
Author: Baozhong Meng
Author: Rizwan Ali Ansari