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Contribution A Letude De Lepuration Par Le Sol
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Book Synopsis Managing Soil Drought by : Rattan Lal
Download or read book Managing Soil Drought written by Rattan Lal and published by CRC Press. This book was released on 2024-06-10 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global drylands, covering over 40% of Earth’s land surface, are important among worldwide ecoregions and support large human and livestock populations. However, these ecologically sensitive ecoregions are undergoing a rapid transformation resulting from climate change, socioeconomic and political factors, increases in population, and ever-growing demands for goods and services. Managing Soil Drought addresses basic processes and provides specific case studies throughout covering the protection, restoration, and sustainable management goals of global drylands under changing and harsh climatic conditions, including fragile and vulnerable ecosystems. The book is written by numerous researchers, academicians, practitioners, advocates, land managers, and policymakers involved in bringing about transformation in these regions important to human and nature. It includes information on basic strategies of sustainable management of global drylands aimed at improving water use efficiency through choosing appropriate species, developing new varieties, using organic and inorganic amendments, and scaling up innovative farming systems. This volume in the Advances in Soil Sciences series is an essential read for development organizations and policymakers involved in improving crop productivity and sustainability in drought-prone regions; students, researchers, and academicians interested in sustainable management of water resources; and those involved in emerging concepts of regenerative agriculture, agroecology, and conservation agriculture.
Book Synopsis The Influence of Sewage Sludge Application on Physical and Biological Properties of Soils by : G. Catroux
Download or read book The Influence of Sewage Sludge Application on Physical and Biological Properties of Soils written by G. Catroux and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The agricultural value of sewage sludges is well known and a lot of published data has demonstrated the positive effects of sludge appli cations on plant growth and yield. These effects are probably due mainly to the nitrogen and phosphorus content of sewage sludges. But, as sludges are more organic than mineral, we can expect an effect of the organic matter added to the soil on soil fertility. Certainly, in the future, landspreading of sludges will be regulated, taking into account pollution hazards for waters (excess of nitrogen and phosphorus supply compared to plant needs and soil storage capacities) and for soils (excess of heavy metals supply and build up in soils). There will be regulations fixing what low level of sludges may be spread each year, decreasing their comparative value with respect to mineral fertilizers. In this eventuality, the organic value of sludges will take on a greater importance and several questions arise : - what is the lowest amount of sludge to be spread to have an immediate effect on soil physical properties? - are sludges effective on soil physical properties when spreading repeated low amounts? On the other hand, organic matter and soil biology are closely linked and there are few data on the possible effects - beneficial or detrimenta- on soil organisms.
Download or read book Advances in Soil Science written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world population in 1950 was 2. 5 billion and is more than 5 billion today. The agriculture community, however, has responded remarkably well to meeting the increased need for food and fiber. While the population growth during this period averaged almost 2% annually, the production of grain increased at an even faster rate. From 1950 to 1973, grain production increased 3. 1% annually, but slowed to about 2% from 1973 to 1984. There fore, as a whole, the world has more grain per capita available today than ever before. Several countries that were food importers just a few years ago are food exporters today. The world carry-over stocks today are the highest in years. While the major concern just a few years ago was whether the world could produce adequate food, the problem for many countries today is how to export their surpluses. Although the world as a whole has surplus food supplies, there are millions of people without adequate food to exist, and there are additional millions who have a bare subsistence diet at best. The average daily calorie supply for the developed countries is more than 3,300 per person, while the average for the developing countries is only about 2,200. The major global food produc tion problems have shifted from Asia to Africa, where malnutrition, poverty, and starvation are attracting world attention.
Download or read book Index Medicus written by and published by . This book was released on 1914 with total page 1566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Collection, Disposal, Treatment and Recycling of Solid Wastes by :
Download or read book The Collection, Disposal, Treatment and Recycling of Solid Wastes written by and published by . This book was released on 1976 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin de l'Institut Pasteur by : Institut Pasteur (Paris, France)
Download or read book Bulletin de l'Institut Pasteur written by Institut Pasteur (Paris, France) and published by . This book was released on 1910 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index-catalogue of the Library of the Surgeon-General's Office, United States Army by : National Library of Medicine (U.S.)
Download or read book Index-catalogue of the Library of the Surgeon-General's Office, United States Army written by National Library of Medicine (U.S.) and published by . This book was released on 1961 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization, Treatment and Use of Sewage Sludge by : P. L'Hermite
Download or read book Characterization, Treatment and Use of Sewage Sludge written by P. L'Hermite and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 817 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Second European Symposium held in Vienna, Austria, 21-23 October, 1980
Book Synopsis Palaeoecology of Africa & of the Surrounding Islands & Antarctica by : Eduard Meine van Zinderen Bakker
Download or read book Palaeoecology of Africa & of the Surrounding Islands & Antarctica written by Eduard Meine van Zinderen Bakker and published by . This book was released on 1979 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vol. 8 contains the proceedings of the International Council of Scientific Unions, Scientific Committee on Antarctic Research, Conference on Quaternary Studies held at ... Canberra ... 1972.
Book Synopsis Index Catalog of the Library of the Surgeon General's Office by : National Library of Medicine (U.S.)
Download or read book Index Catalog of the Library of the Surgeon General's Office written by National Library of Medicine (U.S.) and published by . This book was released on 1959 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index-catalogue of the Library of the Surgeon-General's Office, United States Army by : Library of the Surgeon-General's Office (U.S.)
Download or read book Index-catalogue of the Library of the Surgeon-General's Office, United States Army written by Library of the Surgeon-General's Office (U.S.) and published by . This book was released on 1887 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index-catalogue of the Library of the Surgeon General's Office, United States Army (Army Medical Library) by : National Library of Medicine (U.S.)
Download or read book Index-catalogue of the Library of the Surgeon General's Office, United States Army (Army Medical Library) written by National Library of Medicine (U.S.) and published by . This book was released on 1959 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index-catalogue of the Library of the Surgeon General's Office, National Library of Medicine by : National Library of Medicine (U.S.)
Download or read book Index-catalogue of the Library of the Surgeon General's Office, National Library of Medicine written by National Library of Medicine (U.S.) and published by . This book was released on 1961 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Collection of incunabula and early medical prints in the library of the Surgeon-general's office, U.S. Army": Ser. 3, v. 10, p. 1415-1436.
Book Synopsis Index-catalogue of the Library of the Surgeon General's Office, National Library of Medicine: Subjects N-Z by : National Library of Medicine (U.S.)
Download or read book Index-catalogue of the Library of the Surgeon General's Office, National Library of Medicine: Subjects N-Z written by National Library of Medicine (U.S.) and published by . This book was released on 1961 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index-catalogue of the Library of the Surgeon General's Office, United States by :
Download or read book Index-catalogue of the Library of the Surgeon General's Office, United States written by and published by . This book was released on 1887 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index-catalogue of the Library ... by : Library of the Surgeon-General's Office (U.S.)
Download or read book Index-catalogue of the Library ... written by Library of the Surgeon-General's Office (U.S.) and published by . This book was released on 1959 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index-catalogue of the Library of the Surgeon General's Office, National Library of Medicine: Authors and titles by : National Library of Medicine (U.S.)
Download or read book Index-catalogue of the Library of the Surgeon General's Office, National Library of Medicine: Authors and titles written by National Library of Medicine (U.S.) and published by . This book was released on 1959 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
