Paddy Soils In Tropical Asia Their Material Nature And Fertility
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Paddy Soils In Tropical Asia Their Material Nature And Fertility
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Author : Keizaburo Kawaguchi
language : en
Publisher:
Release Date : 1977
Paddy Soils In Tropical Asia Their Material Nature And Fertility written by Keizaburo Kawaguchi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Rice categories.
Paddy Soils In Tropical Asia
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Author : Keizaburo Kawaguchi
language : en
Publisher:
Release Date : 1977-01-01
Paddy Soils In Tropical Asia written by Keizaburo Kawaguchi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977-01-01 with categories.
Changes In Paddy Soil Fertility In Tropical Asia Under Green Revolution
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Author : Junta Yanai
language : en
Publisher: Springer Nature
Release Date : 2022-06-20
Changes In Paddy Soil Fertility In Tropical Asia Under Green Revolution written by Junta Yanai and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-20 with Nature categories.
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.
Paddy Soils In Tropical Asia Their Material Nature And Fertility
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Author : Keizaburo Kawaguchi
language : en
Publisher:
Release Date : 1977
Paddy Soils In Tropical Asia Their Material Nature And Fertility written by Keizaburo Kawaguchi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Technology & Engineering categories.
Proceedings Of Symposium On Paddy Soils
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Author : Institute of Soil Science, Academia Sinica
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Proceedings Of Symposium On Paddy Soils written by Institute of Soil Science, Academia Sinica and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
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.
The Biodemography Of Subsistence Farming
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Author : James W. Wood
language : en
Publisher: Cambridge University Press
Release Date : 2020-04-23
The Biodemography Of Subsistence Farming written by James W. Wood and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-23 with Business & Economics categories.
An exploration of preindustrial agriculture that applies insights from biodemography, physiological ecology, and household demography.
Bibliography Of Soils Of The Tropics Tropics In General And Islands Of Pacific And Indian Ocean
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Author : Arnold Clifford Orvedal
language : en
Publisher:
Release Date : 1975
Bibliography Of Soils Of The Tropics Tropics In General And Islands Of Pacific And Indian Ocean written by Arnold Clifford Orvedal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Soils categories.
Bibliography Of The Soils Of The Tropics Vol 4
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Author : Arnold Clifford Orvedal
language : en
Publisher:
Release Date : 1980
Bibliography Of The Soils Of The Tropics Vol 4 written by Arnold Clifford Orvedal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Agriculture categories.
Principles And Practices Of Rice Production
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Author : Surajit K. De Datta
language : en
Publisher: Int. Rice Res. Inst.
Release Date : 1981
Principles And Practices Of Rice Production written by Surajit K. De Datta and has been published by Int. Rice Res. Inst. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Rice categories.
Agricultural Strategies
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Author : Joyce Marcus
language : en
Publisher: Cotsen Institute of Archaeology Press
Release Date : 2006-12-31
Agricultural Strategies written by Joyce Marcus and has been published by Cotsen Institute of Archaeology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-12-31 with Social Science categories.
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.