Download or read book ACTMO an Agricultural Chemical Transport Model written by Maurice Hedert Frere and published by . This book was released on 1975 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Chemical Transport in Soils written by Hossein Ghadiri and published by CRC Press. This book was released on 1992-09-23 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling Chemical Transport in Soils: Natural and Applied Contaminants provides a comprehensive discussion of mathematical models used to anticipate and predict the consequences and fate of natural and applied chemicals. The book evaluates the strengths, weaknesses, and possibilities for application of numerous models used throughout the world. It examines the theoretical support and need for experimental calibration for each model. The book also reviews world literature to discuss such topics as the movement of sorbed chemicals by soil erosion, the movement of reactive and nonreactive chemicals in the subsurface and groundwater, and salt transport in the landscape. Modeling Chemical Transport in Soils: Natural and Applied Contaminants is an important volume for environmental scientists, agricultural engineers, regulatory personnel, farm managers, consultants, and the chemical industry.
Download or read book Farming Action Catchment Reaction written by J Williams and published by CSIRO PUBLISHING. This book was released on 1998-01-01 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dryland farming is a major export earner for many temperate-zone countries, yet it continues to degrade a country's natural resources. Effects are not restricted to the land - changes in water quality can reduce the potential uses of water and bring about catastrophic changes in both freshwater and coastal ecosystems. Farming Action: Catchment Reaction provides a comprehensive technical overview of the relationships between dryland farming systems and catchment land and water quality in Australia, and integrates it in a whole system framework. It deals with the issues in terms of people, pointers, processes and prediction as it discusses social aspects of developing and implementing research to improve dryland farming systems in catchment management programs, indicators of catchment health, and the processes which determine the impact of the farming action on the catchment response. It concludes by considering the adequacy of our ability to use this process knowledge in models to predict the effect of dryland farming on catchment condition.
Download or read book Technical Reference Documents Supporting the Generic Environmental Impact Statement for Wastewater Management in Rural Lake Areas written by and published by . This book was released on 1983 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Pesticides and Nutrients on Agricultural Lands written by Anthony S. Donigian (Jr.) and published by . This book was released on 1976 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in the Modeling of Hydrologic Systems written by D.S Bowles and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling of the rainfall-runoff process is of both scientific and practical significance. Many of the currently used mathematical models of hydrologic systems were developed a genera tion ago. Much of the effort since then has focused on refining these models rather than on developing new models based on improved scientific understanding. In the past few years, however, a renewed effort has been made to improve both our fundamental understanding of hydrologic processes and to exploit technological advances in computing and remote sensing. It is against this background that the NATO Advanced Study Institute on Recent Advances in the Modeling of Hydrologic Systems was organized. The idea for holding a NATO ASI on this topic grew out of an informal discussion between one of the co-directors and Professor Francisco Nunes-Correia at a previous NATO ASI held at Tucson, Arizona in 1985. The Special Program Panel on Global Transport Mechanisms in the Geo-Sciences of the NATO Scientific Affairs Division agreed to sponsor the ASI and an organizing committee was formed. The committee comprised the co directors, Professor David S. Bowles (U.S.A.) and Professor P. Enda O'Connell (U.K.), and Professor Francisco Nunes-Correia (Portugal), Dr. Donn G. DeCoursey (U.S.A.), and Professor Ezio Todini (Italy).
Download or read book Water resources Investigations Report written by and published by . This book was released on 1993 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Soil Science written by and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the beginning of agriculture until about 1950, increased food production came almost entirely from expanding the cropland base. Since 1950, however, the yield per unit of land area for major crops has increased dramatically. Much of the increase in yields was because of increased inputs of energy. Between 1950 and 1985, the farm tractor fleet quadrupled, world irrigated area tripled, and use of fertilizer increased ninefold. Between 1950 and 1985, the total energy used in world agriculture increased 6. 9 times. Irrigation played a particularly important role in the rapid increase in food production between 1950 and 1985. The world's irrigated land in 1950 totaled 94 million hectares but increased to 140 million by 1960, to 198 million by 1970, and to 271 million hectares in 1985. However, the current rate of expansion has slowed to less than 1 % per year. The world population continues to increase and agricultural production by the year 2000 will have to be 50 to 60% greater than in 1980 to meet demands. This continued demand for food and fiber, coupled with the sharp decline in the growth rate of irrigation development, means that much of the additional agricultural production in future years must come from cultivated land that is not irrigated. Agricultural production will be expanded in the arid and semiarid regions because these regions make up vast areas in developing countries where populations are rapidly rising.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1978 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ARS H series written by United States. Agricultural Research Service and published by . This book was released on 1975 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ARS H written by United States. Agricultural Research Service and published by . This book was released on 1972 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CREAMS written by United States. Science and Education Administration and published by . This book was released on 1980 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Workshop in Sampling Requirements for Monitoring and Evaluation of Watershed Management Practices written by and published by . This book was released on 1981 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture and Related Agencies Appropriations written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Agriculture and Related Agencies and published by . This book was released on 1976 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Exposure From Chemicals written by W. Brock Neely and published by CRC Press. This book was released on 2018-01-18 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume series will describe the mechanisms that are operating on chemicals as thy move in the environment. Knowledge of these mechanisms is a vital component in performing a risk assessment. Volume I will deal with the physical and chemical properties of a material and how these influence the degradation and dissipating reactions. Volume 2 will address the transport of the chemical as it moves through the environment from the source to the final sink.
Download or read book Control of Water Pollution from Agriculture written by E. D. Ongley and published by Food & Agriculture Org.. This book was released on 1996 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural operations can contribute to water quality deterioration through the release of several materials into water: sediments, pesticides, animal manures, fertilizers and other sources of inorganic and organic matter. This ''guidelines'' document on control and management of agricultural water pollution has the objectives of delineating the nature and consequences of agricultural impacts on water quality, and of providing a framework for practical measures to be undertaken by relevant professionals and decision-makers to control water pollution.
Download or read book Agriculture and Related Agencies Appropriations for 1976 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Agriculture and Related Agencies and published by . This book was released on 1975 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
