Download or read book Paddy Soils in Tropical Asia Their Material Nature and Fertility written by Keizaburo Kawaguchi and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paddy Soils in Tropical Asia written by Keizaburo Kawaguchi and published by . This book was released on 1977-01-01 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in Paddy Soil Fertility in Tropical Asia under Green Revolution written by Junta Yanai and published by Springer Nature. This book was released on 2022-06-20 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the effect of the Green Revolution (GR) on long-term changes in the fertility status of paddy soils in tropical Asia. While information on long-term changes in soil fertility status are rather limited due to difficulties in obtaining past data or samples for comparison, this investigation on temporal changes in soil fertility is possible by comparing fertility status in the 2010s, which the authors examined recently, with those from the 1960s, when GR was initiated, which was reported by Kawaguchi & Kyuma (1977). More than 220 paddy soils collected from Thailand, the Philippines, Malaysia, Bangladesh, and Indonesia were analyzed for their physicochemical properties as well as total and available fractions of plant macro- and micro- essential elements, and their temporal changes were examined in addition to their spatial variation in each country. The most significant change was a drastic increase of available phosphorus in soils, possibly due to fertilization after the GR. Changes in organic matter, pH, and other nutrients were relatively small. A considerable decrease in the content of some micronutrients was also observed. Long-term studies on soil fertility status in the past and present will be useful to establish soil/fertilizer management for sustainable rice production in the future. This book is an essential reading for soil scientists, agricultural scientists, environmental scientists, as well as policymakers and nongovernmental officers such as FAO.
Download or read book Paddy Soils in Tropical Asia Their Material Nature and Fertility written by Keizaburo Kawaguchi and published by . This book was released on 1977 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Symposium on Paddy Soils written by Institute of Soil Science, Academia Sinica and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: China contributes a large part to rice production, one of the most important crops in the world. It is estimated that in China rice constitutes about half of the total food production, covering an area of about 30 % of \08 hectares of cultivated land of the whole country. Owing to the peculiar water regime, paddy soils possess quite different properties physically, chemically and biologically as compared with those of upland soils. Such properties have a conspicuous effect on fertility and management practice of paddy field. For the purpose of summing up the past work and opening up new prospects, a "Symposium on Paddy Soils" was organized under the auspices of Academia Sinica, held on October 19-24, 1980 in Nanjing, which was followed by a seven-day paddy soil excursion in the lower Changjiang Delta. In addition to 120 Chinese soil scientists, 56 guests coming from America, Asia, Europe and Oceania attended the symposium on invitation. A total of 110 papers were presented either orally or by poster. All these are collected and published in the present proceedings which we hope may be helpful to the scientific exchanges between soil scientists of China and other countries.
Download or read book Advances in Rice Science written by Ratikanta Maiti, PhD and published by CRC Press. This book was released on 2020-11-12 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: During recent decades, tremendous progress and innovations have been made in rice science with the goal of increasing production to meet the world’s growing demands. This new volume provides a concise overview of rice, covering the background and importance of rice; origin, evolution, and domestication of rice; and the world rice production. It goes on to provide new and important recent research advances on many different aspects of rice science and production. The authors look at advances in rice ideotypes, abiotic stress management techniques, biotic stress affecting crop productivity, new methods and technology for cultivation, and new methods and techniques in rice grain quality analysis and processing. It also describes new rice varieties, new hybrid rice technology, and new breeding methods for rice.
Download or read book Bibliography of Soils of the Tropics Tropics in general and islands of Pacific and Indian Ocean written by Arnold Clifford Orvedal and published by . This book was released on 1975 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of the Soils of the Tropics Vol 4 written by Arnold Clifford Orvedal and published by . This book was released on 1980 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biodemography of Subsistence Farming written by James W. Wood and published by Cambridge University Press. This book was released on 2020-04-23 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viewing the subsistence farm as primarily a 'demographic enterprise' to create and support a family, this book offers an integrated view of the demography and ecology of preindustrial farming. Taking an interdisciplinary perspective, it examines how traditional farming practices interact with demographic processes such as childbearing, death, and family formation. It includes topics such as household nutrition, physiological work capacity, health and resistance to infectious diseases, as well as reproductive performance and mortality. The book argues that the farming household is the most informative scale at which to study the biodemography and physiological ecology of preindustrial, non-commercial agriculture. It offers a balanced appraisal of the farming system, considering its strengths and limitations, as well as the implications of viewing it as a 'demographic enterprise' rather than an economic one. A valuable resource for graduate students and researchers in biological and physical anthropology, cultural anthropology, natural resource management, agriculture and ecology.
Download or read book Agricultural Strategies written by Joyce Marcus and published by Cotsen Institute of Archaeology Press. This book was released on 2006-12-31 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together a diverse set of new studies--archaeological, ethnohistoric, and ethnographic--that focus on agricultural intensification and hydraulic systems around the world. Fifteen chapters--written by many of the world's leading experts--combine extensive regional overviews of agricultural histories with in-depth case studies. In this volume are chapters on agriculture in the Middle East, South Asia, Europe, Oceania, Mesoamerica, and South America. A wide range of theoretical perspectives and approaches are used to provide a framework for agricultural land-use and water management in a variety of cultural and historical contexts. This book covers the co-evolutionary relationships among sociopolitical structure, agriculture, land-use, and water control. Agricultural Strategies is an invaluable resource for those engaged in ongoing debates about the role of intensification and agriculture in the past and present.
Download or read book Soil Physics and Rice written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1985 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles and Practices of Rice Production written by Surajit K. De Datta and published by Int. Rice Res. Inst.. This book was released on 1981 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tropical Soils written by Anthony S. R. Juo and published by Oxford University Press. This book was released on 2003-09-18 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural ecology, or agroecology, deals in general with the structure and function of agroecosystems at different levels of resolution. In this text/reference, the authors describe in terms of agroecology the tropical environments of sub-Saharan Africa, Southeast Asia, and Latin and Central America, focusing on production and management systems unique to each region.
Download or read book Increasing Productivity of Intensive Rice Systems Through Site Specific Nutrient Management written by A. Dobermann (Ed) and published by Int. Rice Res. Inst.. This book was released on 2004 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rice Soil Water Land written by Frans R. Moormann and published by Int. Rice Res. Inst.. This book was released on 1978 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture and the Environment written by A. S. R. Juo and published by . This book was released on 1995 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compatibility of food production and protection of the environment: an International agenda for research and education; Reassessing the role of agrochemical inputs in developing country agriculture; The potential role of biotechnology: solving food production and environmental problems in developing countries; The rural clean water program: striving for durability; The rationale for using a watershed as the basis for planning and development; Nutrient cycling and soil-erosion control in agroforestry systems; Ecological and economic sustainability of paddy rice system; issues and challenges of dryland agriculture in southern Asia; Balancing agriculture with physical and economic envirinment in eastern and central Europe with special reference to poland; Sustainability, grwth, and poverty alleviation: research and policy issues for tropical moist forests.
Download or read book Resource Management in Rice Systems Nutrients written by V. Balasubramanian and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice is the major staple food in Asia, and food security means rice security for most Asians. By the year 2025, we need to produce about 60% more rice than we do today to meet the growing demand. Efficient use of inputs is vital to safely produce the additional food from limited resources with minimal impact on the environment. This book reviews emerging knowledge-intensive technologies and decision aids for improved nutrient management in rice, technology adoption constraints at the farm level, and innovative approaches for field evaluation and promotion of new technologies to farmers. It is highly useful to rice scientists and development workers, students of agronomy, soil science, and plant nutrition, and crop consultants and extension workers in rice all over the world.
