Download or read book Nitrate Production and Total Nitrogen in Soils as Affected by Crop Rotation and Soil Type written by James Rudolph Skinner and published by . This book was released on 1957 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen and Carbon Changes in Great Plains Soils as Influenced by Cropping and Soil Treatments written by Howard J. Haas and published by . This book was released on 1957 with total page 120 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 The Relation Between a Nitrate nitrogen Incubation Soil Test and Greenhouse and Field Response of Crops to Added Nitrogen written by Toshiaki Kinjo and published by . This book was released on 1955 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relation of Soil Nitrogen Nitrification and Ammonification to Pot Experiments written by George Stronach Fraps and published by . This book was released on 1921 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Disappearance of Nitrates Under Timothy written by L. G. Jones and published by . This book was released on 1927 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil and Plant Nitrogen written by Georges Hofman and published by . This book was released on 2004 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Use and Behavior in Crop Production written by L. Fred Welch and published by . This book was released on 1979 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most plants absorbmore nitrogen than any other nutrient. Because the amount needed is so large and easily be lost from many soils, nitrogen is usually the most limiting nutrient for plant growth. Although about 79 percent of the atmosphere is nitrogen, only nitrogen-fixingplants such as legumeswith their associated bacteria are able to use this abundant source. The nonleguminous grain crops must receive supplemental nitrogen to produce satisfactory yields. Until the last few decades the supply of available nitrogen in the soil was increased primarily by legumes and manure. These sources should be used when economically feasible, but many important grain-producing areas of the world must now rely on commercial fertilizer nitrogen. For economic reasons researchers and growers have been interested for many years in improving yields from each unit of nitrogen. Recently, however, the efficient use of nitrogen has become an environmental issue as well, because high nitrate concentrations in water may be harmful to humans, especiali infants, and to livestock. If plants absorb more of the addedfertilizer nitrogen, then less is likely to leach from fields into drinking water. Improving nitrogen efficiency has also become crucial in order to conserve dwinling supplies of natural gas, which is used in large quantities to manufacture nitrogenfertilizers.
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 Fixation of Nitrogen in Colorado Soils written by William Parker Headden and published by . This book was released on 1913 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Management and Ground Water Protection written by Ronald F Follett and published by Elsevier. This book was released on 2012-12-02 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supplying crops with adequate nitrogen is vital to ensuring food supplies. Once nitrogen is added to the soil, it is subject to chemical transformations of the nitrogen-cycle including transformation to nitrate. Excessive amounts of accumulated nitrate may then leach out of the soil and could potentially enter and contaminate drinking water supplies. The purpose of this book is to examine the subject of nitrogen management and ground water protection.The issue of maintaining ground water quality is addressed primarily from an agronomic point of view. Topics covered include: health and economic aspects of nitrate in drinking water; nitrate sources; ground water nitrate in the USA and other developed countries; transport, leaching and accounting for nitrogen; soil, nitrogen, crop and water management; and nitrate in aquifer systems. The book contains a keyword index and is organized into thirteen chapters, each with appropriate references, tables and figures. Chapter authors are among the leading experts on the subject of nitrate and ground water quality.Readers to whom the book is directed include soil scientists and agronomists, agricultural engineers (irrigation and drainage), environmental scientists, agricultural policy makers, and hydrologists.
Download or read book Factors Affecting the Accumulation of Nitrate Nitrogen in High Plains Soils written by Henry Howard Finnell and published by . This book was released on 1932 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Nitrogen as Fertilizer Or Pollutant written by Joint FAO/IAEA Division of Atomic Energy in Food and Agriculture and published by . This book was released on 1980 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Efficiency in Agricultural Soils written by David S. Jenkinson and published by Pergamon. This book was released on 1988 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Seminar on nitrogen efficiency in agricultural soils and the efficiency use of fertilizer nitrogen, held in Edinburgh, 16-18 September 1987, as part of the EC Programme for the Coordination of Agricultural Research.
Download or read book Soil Plant Nitrogen Relationships written by Donald R. Nielsen and published by Elsevier. This book was released on 2013-09-03 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen in the Environment, Volume 2: Soil-Plant-Nitrogen Relationships is the second of a two-volume treatise based on manuscripts presented at the international conference on ""Nitrogen in the Environment,"" held at the University of California Conference Center, Lake Arrowhead, in February, 1977. All original manuscripts were revised in accordance with discussions at the conference. The chapters published in these volumes are those revised manuscripts, with provisions in each chapter to preserve the major suggestions for their improvement. These two volumes—Nitrogen Behavior in Field Soil and Soil-Plant-Nitrogen Relationships—should be of value in bringing into perspective current knowledge on selected aspects of nitrogen in the environment. The book contains 22 chapters and opens with a study on the factors influencing nitrate acquisition by plants; assimilation and fate of reduced nitrogen. Separate chapters follow on topics such as absorption and utilization of ammonium nitrogen by plants; potential nitrate levels in edible plant parts; control of biological nitrogen fixation; and methods for analysis of denitrification in soils.
Download or read book Technical Bulletin written by and published by . This book was released on 1956 with total page 1482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Various Factors on Movement of Nitrate Nitrogen in Soil Profiles and on Transformations of Soil Nitrogen written by Robert James Olsen and published by . This book was released on 1969 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
