Your Search Results(showing 3246)

    • Trusted Partner
      Technology, Engineering & Agriculture
      January 2024

      Vegetable Seeds

      Production and Technology

      by Gregory E Welbaum

      Most food and fiber crops are produced from seed. This means that the world's population is dependent on annual seed production for its food supply. Vegetable seed production is much different and more challenging than production of grain crops. This book explains the biology and technology behind producing, maintaining, and enhancing the quality of vegetable seeds from breeding through to the marketed product. It begins with six chapters on a broad range of seed-related topics: the importance of seeds, reproductive biology of plants, genetic improvement strategies, quality assurance of seed production, post-harvest seed enhancement, and organic production. The remaining chapters cover seed production in eleven important vegetable families. Each chapter provides a description of the botany, types and cultivars, genetic improvement, pollination, soil fertility management, pest management, crop production, harvesting, post-harvest handling, and seed yields. The aim of this book is to educate how to produce high-quality vegetable seeds. Incorporating both current methodologies and recent research results, it is suitable for students, researchers, and professionals in the seed industry.

    • Trusted Partner
      Children's & YA
      September 2020

      Seed Ball

      by Bahar Sener / Samantha McLelland

      Nowadays, in almost all schools children are being taught about the importance of seeds. They know that seeds carry life. Seed festivals are organized in various places in the spring. Children learn about different types of seeds and how to differentiate them. They even learn how to plant them in pots in their backyards. In this beautiful book, children will learn how to make seed balls using the seeds of different fruits and vegetables. Seed ball is a unique gift from the acclaimed Japanese figure in organic farming, Fukuoka.

    • Trusted Partner
      Agronomy & crop production
      December 2004

      Seed Fate

      Predation, Dispersal and Seedling Establishment

      by Edited by Pierre M Forget, Joanna E Lambert, Philip E Hulme, Stephen B Vander Wall

      This book presents current knowledge of seed fate in both natural and human-disturbed landscapes, from various regions of the world. Habitats considered range from mountain and arid deserts in the temperate zone, to savanna and lowland rainforests in tropical regions of the world. Particular attention is paid to plant diversity conservation when seed removal is affected by factors such as hunting, habitat fragmentation or intensive logging. Contributors include leading scientists involved in research on seed ecology and on animal-plant relationships from the perspective of both primary and secondary seed dispersal, and predation.

    • Trusted Partner
      September 2015

      Das Papiergeld der französischen Revolution 1789–1797.

      Aus dem Russ. von F. Schlömer. Geschichte der Stabilisierungsversuche, hrsg. von M. Palyi, dritter Teil. Dt. Zahlungsbilanz und Stabilisierungsfrage, im Auftr. des Ver. veranst. von K. Diehl / F. Somary. (Schriften des Vereins für Sozialpolitik 165/III).

      by Falkner, Semen A. / Herausgegeben von Palyi, Melchior; Herausgegeben von Diehl, Karl; Herausgegeben von Somary, Felix; Übersetzt von Schlömer, Friedrich

    • Trusted Partner
      Agriculture & related industries
      June 2011

      African Seed Enterprises

      Sowing the Seeds of Food Security

      by Edited by Paul Van Mele, J W Bentley, Robert G Guéi

      In most developing countries, good quality seed is hard to obtain and farmers struggle to save seed from one year to the next. Instead, they increasingly turn to public or private enterprises that multiply, store and distribute seed. African Seed Enterprises takes a people-centred look at the companies, public agencies and family farms that are taking on this role and making a difference to food security across Africa. Case studies are arranged by country, and each chapter includes a profile of the agricultural and policy environment that surrounds these enterprises and affects their development. Each case is unique and presents its own set of lessons, and as a whole, this wide range of experiences is a rich source of data and ideas for future enterprise, offering valuable insights for policy makers, academics and non-governmental organizations throughout the world.

    • Trusted Partner
      Horticulture
      October 2011

      Agricultural Seed Production

      by Raymond A T George

      A practical coverage of the principles of producing seeds for the main agricultural crops, this book emphasises producing optimal quality seed, and applies to small and large scale farms worldwide. Cereals such as wheats, rice, barley, rye and maize are covered along with pulses, legumes, oil seed rape and soybean. Coverage includes principles of production such as pollination, agronomy issues such as site selection and cultivar purity, seed processing, drying and storage. A focus on global food security is maintained throughout.

    • Trusted Partner
      Agricultural science
      December 1997

      Forage Seed Production, Volume 1

      Temperate Species

      by Edited by Daphne T Fairey, John G Hampton

      The grasses and legumes grown in pastures and rangelands form the basis of the worldwide animal production industry. Some species also have a significant role in the sport and leisure industry, for playing surfaces such as golf courses and football fields. It is therefore vitally important to ensure that seed supplies of appropriate species are available for use on a commercial scale. This book is published in association with the International Herbage Seed Production Research Group. It brings together leading researchers and along with its companion volume Forage Seed Production Volume 2: Tropical and Subtropical Species (to be published in late 1998), provides the definitive resource for all those concerned with breeding and profitable seed production for grasses and legumes used within grazing systems or recreation and amenity provision. The book is in two parts. Part 1 covers all aspects relevant to seed production, including improving seed yield and quality, crop management, harvesting, processing and the international seed trade. Part 2 consists of eleven case studies from eight countries covering three continents. This book and its companion should be read by all seed scientists involved in the breeding and commercial production of grass and legume seed. They also represent a valuable asset for all commercial seed suppliers. Additionally, the information presented within the book is important for all students and lecturers within departments of agriculture and plant breeding.

    • Trusted Partner
      Botany & plant sciences
      January 2006

      Testing Methods for Seed-Transmitted Viruses

      Principles and Protocols

      by Sven E Albrechtsen

      This practical guide covers the commonly used detection methods for seed-transmitted viruses and viroids that affect both tropical and temperate crops. It contains 25 complete step-by-step procedures for biological, serological and molecular techniques to detect and identify such viruses. Combining helpful practical notes with more detailed explanations of the principles behind the techniques, the book describes the general characteristics of seed-transmitted viral diseases and discusses outlines for the organization and interpretation of seed health assays. The techniques reviewed are also applicable to non-seed-transmitted viral agents.

    • Trusted Partner
      Applied ecology
      February 2002

      Seed Dispersal and Frugivory

      Ecology, Evolution and Conservation

      by Edited by Douglas J Levey, Wesley R Silva, Mauro Galetti

      Until recently, the production of fruits by plants, their consumption by animals (frugivory) and the relevance of these to seed dispersal have attracted less attention than topics such as pollination biology. However, since the 1970s they have started to gain more prominence and now give rise to more research funding, seminal papers and international symposiums. This book contains chapters adapted from the Third International Symposium-Workshop on Frugivores and Seed Dispersal held in August 2000 in Rio Quente, Brazil.

    • Trusted Partner
      Technology, Engineering & Agriculture
      September 2018

      Seed Production in Oil Palm

      A Manual

      by Eddy S Kelanaputra, Steven P. C. Nelson, Umi Setiawati, Baihaqi Sitepu, Fazrin Nur, Brian P Forster, Abdul R. Purba, Brian P Forster, Peter D. S. Caligari

      This is a practical guide to seed germination in oil palm for both breeding and genetic studies as well as commercial seed production. Oil palm is the top oil crop in the world and this manual provides step-by-step illustrated methods, written by practitioners actively engaged in oil palm seed production and breeding. Presenting sound practices based on scientific innovation and knowledge, this guide brings together the many aspects of seed germination in oil palm in one place. Promoting green, eco-friendly agriculture, this book covers: Health and safety considerations Pollination and harvesting Seed preparation, viability testing and moisture testing Seed processing for commercial production and breeding Based on experience and protocols, this is an invaluable manual for students and researchers in agriculture, plant breeders, growers and end users interested in the practicalities of oil palm seed production. It is also a valuable resource for training, for those entering a career in oil palm and as a reference for managers , to ensure best practices in maximising sustainability and production of this important crop.

    • Trusted Partner
      Science & Mathematics
      February 2017

      Seed Biology and Yield of Grain Crops

      by Dennis B Egli

      This new edition of an established title examines the determination of grain crop yield from a unique perspective, by concentrating on the influence of the seed itself. As the food supply for an expanding world population is based on grain crops harvested for their seeds, understanding the process of seed growth and its regulation is crucial to our efforts to increase production and meet the needs of that population. Yield of grain crops is determined by their assimilatory processes such as photosynthesis and the biosynthetic processes in the seed, which are partly regulated within the seed itself. Providing a timely update in this field and highlighting the impact of the seed on grain crop yields, this book: · Describes all aspects of seed growth and development, including environmental and genetic effects on growth rate and length of the filling period. · Discusses the role of the seed in determining the two main yield components: individual seed weight and number of seeds per unit area. · Uses the concepts and models that have been developed to understand crop management and yield improvement. Substantially updated with new research and further developments of the practical applications of the concepts explored, this book is essential reading for those concerned with seed science and crop yield, including agronomists, crop physiologists, plant breeders, and extension workers. It is also a valuable source of information for lecturers and graduate students of agronomy and plant physiology. ; This is a new edition of an established title examines the determination of grain crop yield from a unique perspective, by concentrating on the influence of the seed itself. ; Chapter 1: IntroductionChapter 2: Seed Growth and DevelopmentChapter 3: Seed Growth Rate and Seed-Fill Duration: Variation and Regulation.Chapter 4: Yield Components-Regulation by the Seed Chapter 5: The Seed, Crop Management, and YieldChapter 6: The Way Forward

    • Trusted Partner
      Agricultural science
      May 1998

      Seed Biology and the Yield of Grain Crops

      by Dennis B Egli

      The food supply to an expanding world population is based on grain crops, i.e. crops harvested for their seeds. Therefore, understanding the process of seed growth and its regulation is crucial in our efforts to increase production, in order to meet the needs of that population. Yield is determined by the ability of crop plants to use their assimilatory processes such as photosynthesis and also the biosynthetic processes in the seed, which are partly regulated within the seed itself. This book examines the determination of grain crop yield from a new and unique perspective, by concentrating on the influence of the seed. All aspects of seed growth and development are described, including environmental and genetic effects on growth rate and length of filling period. The effect of the seed on the two main yield components, individual seed weight and number of seeds per unit area, is then discussed. Finally, the concepts and models developed are evaluated in terms of crop management. The book is essential reading for those concerned with seed science and crop yield, including agronomists, crop physiologists, plant breeders, and extension workers. It will also be a valuable source of information for lecturers and graduate students of agronomy and plant physiology.

    • Trusted Partner
      Agricultural science
      August 2007

      Seed Dispersal

      Theory and its Application in a Changing World

      by Edited by Andrew J Dennis, Ronda J Green, Eugene W Schupp, David A Westcott

      Fresh concepts in the study of seed dispersal are spurring a host of exciting new questions, new answers to old questions, new methods and approaches, and a reinvigoration of the field.Seed Dispersal: Theory and its Application in a Changing World presents both recent advances and reviews of current knowledge demonstrating the vigour and vibrancy of the field. It provides new perspectives and directions at a time when efforts to meet growing environmental challenges threatening natural systems are of utmost importance.

    • Trusted Partner
      Mycology, fungi (non-medical)
      January 1989

      Seed-borne Diseases of Rice

      by P C Agarwal

      paper on seed-borne diseases of rice

    • Trusted Partner
      Children's & YA

      Story Story, Story Come

      12 Reimagined Tales From Africa

      by Maïmouna Jallow

      However, the age-old tradition of oral storytelling is on the decline. Rapid urbanisation, the breakdown of the extended family, technology and so on have altered our social fabric. Whilst our daily lives are still peppered with snippets of remembered words of wisdom and proverbs, the reality is that a new generation of Africans have never had the pleasure of listening to a story being told by a storyteller. Story, Story! Story Come! is a contribution to larger efforts to revive storytelling in Africa and beyond. Through a global online contest, Positively African invited African writers, wherever they lived and whatever their age, to write a folktale – either based on an old one, or newly imagined. The challenge was to develop new narratives that speak to issues that are fundamental to Africa’s development in a way that is unconventional but true to our past traditions of folktale and oral storytelling. The stories needed to contain life lessons that are relevant for both young and old, however writers were invited to be as inventive and disruptive as they wished in terms of theme, form, language, characters, imagery and context. The ten winning stories are refreshingly imaginative and tackle a mix of issues. We criss-cross from South Sudan to South Africa, Mali, Niger, Nigeria, Ghana, Kenya and Zambia. Some stories offer valuable moral lessons on greed and pride; others celebrate bravery, perseverance and friendship. One story takes us to a real archaeological site in Niger where a young girl imagines the future. In another, African water spirits share a world with a Beyoncé-obsessed teen that is taught a big lesson in humility. We have also included two additional stories, one by author and publishing partner Zukiswa Wanner and another by the editor of the anthology, Maimouna Jallow. One thing that they all have in common is that they speak to issues we face globally today, from an African perspective.

    • Trusted Partner
      August 2022

      Gac Fruit: Advances in Cultivation, Utilisation, Health Benefits and Processing Technologies

      by Minh Nguyen, Tuyen Chan Kha

      Gac fruit, Momordica cochinchinensis Spreng, is rich in nutrients such as carotenoids (particularly beta-carotene and lycopene), fatty acids, vitamin E, polyphenol compounds and flavonoids. This book provides the latest research on this fruit, from cultivation through to processing technologies for health products. It addresses several techniques on propagation and cultivation in order to increase the production and quality of Gac fruit, including traditionally used parts of the fruit (aril) and those whose value has not yet been maximized (peel, pulp and seed). This plant has the potential to be a high value crop, particularly as parts of the fruit can be processed into nutrient supplements and/or natural colorants. It has an exceptional potential in the world carotenoids market of about US$ 1.4 billion (2017), which will be growing steadily, up to US$ 6.9 billion by 2026. As such, this book contains special emphasis on: · Improving production of Gac fruit · Novel extraction of Gac oil rich in beta-carotene and lycopene from aril and peel. · Encapsulation of Gac oil rich in beta-carotene and lycopene. Practical applied technologies such as microwave drying, heat pump drying, freeze drying, ultrasound assisted extraction, supercritical CO2 extraction, encapsulation techniquesare all presented. This is an essential reference text for academics, researchers and graduate students in cultivation, food processing, science and nutrition. Product developers in health food areas in the food industry will also find it valuable.

    • Trusted Partner
    • Trusted Partner
      Horticulture
      October 2009

      Vegetable Seed Production

      by Raymond A T George

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