Download or read book Plant Nutrient Management in Hawaii s Soils written by James Anthony Silva and published by . This book was released on 2000 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Nutrient Management in Hawaii s Soils written by James A. Silva and published by College of Tropical Agricultural. This book was released on 2014-05-30 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's approach to crop production considers not only the effects of fertilizer applications on crop yield and quality but also includes awareness of the potential of fertilizer nutrients to adversely affect the environment. Managing crop nutrients deliberately and carefully takes on special significance in Hawaii, where imported nutrient inputs are costly and the environment--particularly the underground aquifer and coastal waters--is vulnerable to pollution. This book contains a distillation of decades of CTAHR research on soils, fertilizers, and crop nutrient needs, written for the lay reader and intended to provide a solid base of knowledge for the serious agriculturist. While the text makes reference to Hawaii's crops and soil conditions, its basic information is transferrable to similar tropical and subtropical locations throughout the world.
Download or read book Rice Soils of Hawaii written by Chalmer Kirk McClelland and published by . This book was released on 1912 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties and Management of Soils in the Tropics written by Pedro A. Sanchez and published by Cambridge University Press. This book was released on 2019-01-10 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Download or read book Soil Fertility and Nutrient Management written by Roma Doshi and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil fertility refers to the ability of a soil to supply plant nutrients. Bioavailable phosphorus is the element in soil that is most often lacking. Nitrogen and potassium are also needed in substantial amounts. For this reason these three elements are always identified on a commercial fertilizer analysis. For example a 10-10-15 fertilizer has 10 percent nitrogen. Inorganic fertilizers are generally less expensive and have higher concentrations of nutrients than organic fertilizers. Also, since nitrogen, phosphorus and potassium generally must be in the inorganic forms to be taken up by plants, inorganic fertilizers are generally immediately bioavailable to plants without modification. However, some have criticized the use of inorganic fertilizers, claiming that the water-soluble nitrogen doesn't provide for the long-term needs of the plant and creates water pollution.
Download or read book Nutrient Cycling and Limitation written by Peter M. Vitousek and published by Princeton University Press. This book was released on 2018-06-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability or lack of nutrients shapes ecosystems in fundamental ways. From forest productivity to soil fertility, from the diversity of animals to the composition of microbial communities, nutrient cycling and limitation are the basic mechanisms underlying ecosystem ecology. In this book, Peter Vitousek builds on over twenty years of research in Hawai'i to evaluate the controls and consequences of variation in nutrient availability and limitation. Integrating research from geochemistry, pedology, atmospheric chemistry, ecophysiology, and ecology, Vitousek addresses fundamental questions: How do the cycles of different elements interact? How do biological processes operating in minutes or hours interact with geochemical processes operating over millions of years? How does biological diversity interact with nutrient cycling and limitation in ecosystems? The Hawaiian Islands provide the author with an excellent model system for answering these questions as he integrates across levels of biological organization. He evaluates the connections between plant nutrient use efficiency, nutrient cycling and limitation within ecosystems, and nutrient input-output budgets of ecosystems. This book makes use of the Hawaiian ecosystems to explore the mechanisms that shape productivity and diversity in ecosystems throughout the world. It will be essential reading for all ecologists and environmental scientists.
Download or read book Nutrient Cycling and Limitation written by Peter Morrison Vitousek and published by . This book was released on 2004 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability or lack of nutrients shapes ecosystems in fundamental ways. From forest productivity to soil fertility, from the diversity of animals to the composition of microbial communities, nutrient cycling and limitation are the basic mechanisms underlying ecosystem ecology. In this book, Peter Vitousek builds on over twenty years of research in Hawai'i to evaluate the controls and consequences of variation in nutrient availability and limitation. Integrating research from geochemistry, pedology, atmospheric chemistry, ecophysiology, and ecology, Vitousek addresses fundamental questions: How do the cycles of different elements interact? How do biological processes operating in minutes or hours interact with geochemical processes operating over millions of years? How does biological diversity interact with nutrient cycling and limitation in ecosystems? The Hawaiian Islands provide the author with an excellent model system for answering these questions as he integrates across levels of biological organization. He evaluates the connections between plant nutrient use efficiency, nutrient cycling and limitation within ecosystems, and nutrient input-output budgets of ecosystems. This book makes use of the Hawaiian ecosystems to explore the mechanisms that shape productivity and diversity in ecosystems throughout the world. It will be essential reading for all ecologists and environmental scientists.
Download or read book Soil Acidity and Plant Nutrient Management written by Yan Tang and published by . This book was released on 2004 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toward Sustainable Agriculture written by and published by College of Tropical Agriculture and Human Resources University of Hawai'i. This book was released on 2006 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Sequestration in Agricultural Ecosystems written by Klaus Lorenz and published by Springer. This book was released on 2018-05-31 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive book on basic processes of soil C dynamics and the underlying factors and causes which determine the technical and economic potential of soil C sequestration. The book provides information on the dynamics of both inorganic (lithogenic and pedogenic carbonates) and organic C (labile, intermediate and passive). It describes different types of agroecosystems, and lists questions at the end of each chapter to stimulate thinking and promote academic dialogue. Each chapter has a bibliography containing up-to-date references on the current research, and provides the state-of-the-knowledge while also identifying the knowledge gaps for future research. The critical need for restoring C stocks in world soils is discussed in terms of provisioning of essential ecosystem services (food security, carbon sequestration, water quality and renewability, and biodiversity). It is of interest to students, scientists, and policy makers.
Download or read book Plant soil Interactions Across a Fertility Gradient in Hawaii written by Kathleen Kay Treseder and published by . This book was released on 1998 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring and Modeling of Water Flow and Solute Transport Under Different Manure Amendments in Hawaii written by Amjad A. Ahmad and published by . This book was released on 2009 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sweet corn (Zea Mays L. subsp. mays) is one of the most popular and economically important crops in the world. However, its cultivation requires high inputs of nutrients through commercial fertilizers and/or organic manure amendments. Organic amendments (OA) improve soil fertility and other chemical and physical properties necessary to enhance crop production. Not enough information is available on the effect of OA on Hawaii soil water movement and nutrient concentration within and below crops root zone. The objectives of this study were to evaluate the effect of different OA types (chicken and dairy), rates (0, 168, 336, and 672 kg ha-1 total N equivalent), and number of applications (one and two time application) under sweet corn on: (1) macro- and micro-nutrient concentration within and below the root zone, (2) dry weight, macro- and micro-nutrient concentration in plant roots and shoots, (3) the values and relationship between nitrate (NO3--N) concentration within and below the root zone and relative chlorophyll content (RCC) in plant leaves, (4) sweet corn root distribution, and (5) the performance of Everglades Agro-Hydrology Model (EAHM) under Hawaii conditions. Three field experiments were conducted (one at Poamoho and two at Waimanalo Research Stations of the University of Hawaii) under Randomized Complete Block Design (RCBD) and Strip Plot Design with three replications. Real-time soil water content was monitored at 15 minutes intervals using multisensor capacitance soil water content monitoring system at 10, 20, 30, and 50 cm depths. Suction cup lysimeters were used to collect soil solutions from 30 and 60 cm depths. Soil solutions collected six times during each growing season, were analyzed for macro- and micro-nutrients, electrical conductivity (EC) and pH. Plant roots and shoots were sampled at the end of two growing seasons (Waimanalo trials only) and were analyzed for macro- and micro nutrients. Results showed a significant effect of OA types and rates on nutrient concentration within and below the root zone compared to define treatment at the two locations and during the three growing seasons. Two time application (TTA) of OA significantly increased NO3--N concentration within and below the root zone compared to one time application (OTA). Results showed a significant positive correlation between NO3--N concentration and EC of the soil solution. For the two Waimanalo trials, there was a significant effect of OA types, rates, and number of application on plant root and shoots dry weights, macro- and micro-nutrient accumulation in plant root and shoot tissues. Plant growth and nutrient accumulations were significantly higher for chicken manure (CM) under high application rates and TTA treatment. The application of CM and dairy manure (DM) increased the corn leaves RCC and NO3--N concentration within and below the root zone compared to control treatment. The results revealed a significant positive correlation between NO3--N concentration within the root zone and RCC, especially at certain growth stages. Sweet corn root distribution was significantly affected by the application of OA types and rates. There was significantly higher root density, total roots mass per plant, and percent root in soil under CM and DM compared to control treatment. The EAHM model performed reasonably well under Hawaii condition for soil water and NO3--N within and below the root zone. The simulated soil water content was slightly underpredicted compared to observed soil water content.
Download or read book Integrated Soil Fertility Management in Africa written by Nteranya Sanginga and published by CIAT. This book was released on 2009 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Essential Minerals in Plant Soil Systems written by Azamal Husen and published by Elsevier. This book was released on 2024-05-09 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential Minerals in Plant-Soil Systems: Coordination, Signaling and Interaction Under Adverse Conditions is the first book to encompass these key aspects of plant science, biochemistry, soil science and fertilizer development in a single volume. Describing the micro- and macronutrients in the plant-soil system with the help of suitable illustrations, the book connects all the pieces enabling comprehensive and connected understanding. Terrestrial plants are sessile in nature. They face various adverse environmental conditions including soil nutrient-deficiency signals, which influence overall plant growth and development. Some of the essential nutrients are unreachable to roots due to their low solubility and relative immobilization. Thus, the soil-plant system has evolved signaling, communication and coordination responses for survival under multiple adverse situations. By evolving highly sophisticated mechanisms at the cellular as well as whole-plant scale, these plants have developed ways to co-regulate these stresses in order to maintain homeostasis. Essential Minerals in Plant-Soil Systems covers recent advances in the understanding of how plants coordinate the acquisition, transport, signaling, and interaction, cross-talks between macro- and micro-nutrients in adverse environmental situations. These points are key to understanding the significance of essential, as well as beneficial, elements for sustainable plant growth and production. This book is a valuable reference for those putting research into practice in addressing stress situations, as well as providing important foundational insights for further research. Provides a comprehensive overview of micro- and macronutrients and their interaction with phytohormones under stress conditions Explores proteomic and genomic research into deficiencies and toxicities in plant systems Highlights the use of nanobiotechnology for controlled release of micro- and macronutrients in the plant-soil systems
Download or read book A Handbook on Hawaiian Soils written by William Whitmore Goodale Moir and published by . This book was released on 1936 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Hawaii Soils written by Goro Uehara and published by . This book was released on 1971 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soils written by Khan Towhid Osman and published by Springer Science & Business Media. This book was released on 2012-12-04 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at taking the mystery out of soil science, Soils: Principles, Properties and Management is a text for undergraduate/graduate students who study soil as a natural resource. Written in a reader-friendly style, with a host of examples, figures and tables, the book leads the reader from the basics of soil science through to complex situations, covering such topics as: the origin, development and classification of soil physical, chemical and biological properties of soil water and nutrient management management of problem soils, wetland soils and forest soils soil degradation Further, the ecological and agrological functions of soil are emphasized in the context of food security, biodiversity and climate change. The interactions between the environment and soil management are highlighted. Soil is viewed as an ecosystem itself and as a part of larger terrestrial ecosystems.
