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The first soil survey in the Philippines was done by Mr. Clarence Dorsey, an American soil scientist in the province of Batangas in 1903. The Soils of the Philippines, however, is the first comprehensive summary of more than a century of soil-survey work in this country. It integrates the soil concepts of the reconnaissance soil-survey results, which commenced as early as 1934 and continued until the mid 1960s, with the semi-detailed soil surveys that continue to this day. The result is the first-ever genetic key for classifying Philippine soils at soil series level; thus, making it possible for any newcomers to the soil survey field to confidently produce their own soil map, at a more detai...
This book is about the ‘how’ of desertification control as opposed to an analysis of the ‘why’ and fills a gap in the desertification-related literature in that it shows what to do in situations ranging from fixing mobile sands to arresting accelerated soil erosion in sloping lands. There are numerous illustrations to show the successful techniques. This compilation demonstrates that desertification and land degradation can be controlled and reversed with existing techniques in such widely varying environments as the Sahel of Africa to Sri Lanka and the Philippines in SE Asia, from mountains in Lesotho to low lands on desert margins in Mongolia. Proven approaches include technical interventions, changes in governance and to the legislative framework and policy reform. The book fills a gap in the desertification-related literature in that it shows what to do in situations ranging from fixing mobile sands to arresting accelerated soil erosion in sloping lands.
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This book, specially prepared for soil scientistsand engineers, offers comprehensivecoverage of basic soil concepts, systematics,mapping and examination procedures forsoils. The Manual is universally useful andis the primary reference on principles andtechnical detail for local, State and Federalcontributions to authorized soil surveys.Soil scientists concerned with soil surveysin other countries have used it as well.Teachers have used it both as a text and as areference for students.
Reliable and up-to-date soil information is fundamental to guide policies and decisions in the light of challenges facing food security, climate change adaptation and mitigation, further provision of ecosystem services and sustainable intensification of agriculture. This report reviews the present availability of soil information from legacy maps and reports, and from ongoing global Digital Soil Mapping efforts. It examines soil maps and soil profile databases at the global and national level, global datasets, regional and (inter)-continental soil information products, and the continental soil atlas. It also looks at the evolution of methods and tools for soil mapping, and reviews the requirements of soil information users through survey assessment. Currently, the soil science community is limited in its capacity to provide accurate and updated information to different soil users. This report concludes that there is an urgent need for traditional soil survey/mapping and DSM communities to join forces to fill this gap and meet users' expectations for soil information.
This book presents a comprehensive and up-to-date overview of the soils of Sri Lanka. Including sections on the soil research history, climate, geology, geomorphology, major soil types, soil maps, soil properties, soil classification, soil fertility, land use and vegetation, soil management, soils and humans, soils and industry, and future soil issues, the book summarizes the current state of knowledge in a concise and highly reader-friendly way.
This book presents a comprehensive and up-to-date overview on soils of Taiwan. It includes sections on soil research history, climate, geology, geomorphology, major soil types, soil maps, soil properties, soil classification, soil fertility, land use and vegetation, soil management, soils and humans, soils and industry, future soil issues. The book summarizes what is known about the soils in Taiwan in a concise and highly reader-friendly way.
The chemistry of acidity. Physiological effects of hydrogen, aluminum, and managanese toxicities in acid soil. Physiological aspects of calcium, magnesium, and molybdenum deficiencies in plants. Liming materials and practices. Crop response to lime in the southern united states. Crop response to lime in the midwestern united states. Crop response to lime in the northeastern united states. Crop response to lime in the wested states. Crop response to lime on soils in the tropics. Glossary-common and scientific names of crops referred to in this monograph.