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 The Role of Organic Matter in Modern Agriculture written by Y. Chen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of organic residues as a means of maintaining and increasing soil fertility is of long-standing. This tradition has been somewhat neglected since the introduc tion of mineral fertilizers at low cost. More and more farmers and scientists are now showing renewed interest in the proper and effective use of org~tnic residues, composts and other recycled organic additives. The role and function of organic amendments in modern agricultural systems have become topics of major interest in the scientific and agricultural communities. Research work on residue disposal has provided new concepts on the interaction between organic components and soils as well as new handling technologies (e. g. pelletizing of organic residues). The trend to conserve energy has led scientists to study the minimal tillage system, to find ways of replacing conventional inorganic fertilizers with natural organic prod ucts or microbial preparations, and to develop new composting methods. The drive to achieve higher yields in commercial greenhouse farming has led to a search for optimum substrates as growth media and for improved management techniques. This has led to the introduction of organic substitutes for peat, nota bly those originating from agricultural wastes. Another important aspect is the current interest in organic farming, where use of synthetic chemicals is avoided or prohibited. An increasing percentage of the population in highly developed countries is willing to pay premium prices for food produced on soils where inorganic fertilizers and other agricultural chemicals have not been used.

Download or read book Cycles of Soils written by F. J. Stevenson and published by Wiley-Interscience. This book was released on 1986-01-17 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The carbon cycle. Carbon balance of the soil and role of organic matter in soil fertility. Environmental aspects of the soil carbon cycle. The nitrogen cycle in soil: global and ecological aspects. The international cycle of nitrogen in soil. Impact of nitrogen on health and the environment. The phosporus cycle. The sulfur cycle. The micronutrient cycle.

Download or read book Report of the Director 1911 written by Harry Luman Russell and published by . This book was released on 1911 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of the Director written by University of Wisconsin. Agricultural Experiment Station and published by . This book was released on 1911 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crop Rotation on Organic Farms written by Charles L. Mohler and published by Natural Resource Agriculture and Engineering Service (Nraes). This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1910 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report of the Agricultural Experiment Station of the University of Wisconsin for the Year written by University of Wisconsin. Agricultural Experiment Station and published by . This book was released on 1912 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by University of Wisconsin. Agricultural Experiment Station and published by . This book was released on 1912 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Bulletin written by University of Wisconsin. College of Agricultural and Life Sciences. Research Division and published by . This book was released on 1911 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Soils for Landscape Architects written by Robert F. Keefer and published by Oxford University Press. This book was released on 2000-06-22 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written in a clear, accessible style, this book covers the fundamental aspects of soil science with an emphasis on topics useful to landscape architects and professionals in related fields. The book begins with a discussion of soil surveys developed in different countries, followed by a concise description of soil components and how the interactions between air, water, and nutrients affect plant growth. It examines methods for controlling erosion, particularly in light of modern irrigation techniques. It describes the chemistry of plant growth, devotes four chapters to macro- and micro-nutrients, and features a detailed discussion of ways to diagnose and correct plant disorders. It also looks at the engineering aspects of soils and includes a detailed list of references for further information. Written by an experienced teacher with an extensive background in landscape architecture, this volume will be an invaluable source for students and researchers in architecture, horticulture, and urban planning.

Download or read book Fertilizer Abstracts written by and published by . This book was released on 1969 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book First International Meeting on Microbial Phosphate Solubilization written by E. Velazquez and published by Springer Science & Business Media. This book was released on 2007-05-27 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2002, sixty international specialists met to discuss problems of high P-unavailability as a soil nutrient for crops, and the hazards of increased phosphate input to aquatic habitats from industrial and mining activities, sewage disposal, detergents, and other sources. Among the presentations were updated solutions to enhance P-uptake by plants, bioremediation potential in the rehabilitation of ecosystems, taxonomic characterization interactions with mycorrizae, the physiological and molecular basis of PSM, and more.

Download or read book Journal of the Society of Chemical Industry written by Society of Chemical Industry (Great Britain) and published by . This book was released on 1916 with total page 1490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists of members for 1882-1903 issued in v. 1-22, after which they were published separately.

Download or read book Experiment Station Record written by U.S. Office of Experiment Stations and published by . This book was released on 1944 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experiment Station Record written by United States. Office of Experiment Stations and published by . This book was released on 1916 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey Report written by Iowa Agriculture and Home Economics Experiment Station and published by . This book was released on 1917 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: