AGRICULTURAL NONPOINT SOURCE POLLUTION: Watershed Management and Hydrology - Chapter 11 (end) pps

... Techniques 11. 3.1 Edge-of-Field Overland Flow 11. 3.1.1 Flow Measurement 11. 3.1.2 Sample Collection 11. 3.2 Bottom of Root Zone 11. 3.3 Groundwater 11. 3.4 Drainage Pipes and Springs 11. 3.5 Surface Water 11. 3.6 ... contrast, nonpoint sources are of a diffuse nature and difficult to pinpoint. The pre- dominant nonpoint pollution source is land-based agricultural activit...

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... Romkens, M. J. M. Source of soil eroded by water from upland slopes, in Present and Prospective Technology for Predicting Sediment Yields and Sources, ARS-S-40. 1975. USDA-Agric. Research Service, ... water resource conservation and nonpoint source assessments, including sediment load assessment and inventory, conservation planning and design of sediment control, and the ad...

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... A.B., and Wilke, O.C., Effects of irrigation methods on ground- water pollution by nitrates and other solutes. Report No. EPA-600/ 2-7 6-2 91, EPA, Washington, DC, 1976. 143. McNeal, B. L. and Carlile, ... evaluat- ing leaching of nitrogen from agricultural land, J. Environ. Qual., 5, 197, 1976. 128. Sims, T. J. and Vadas, P. A., Nutrient management planning for poultry grain...

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... to “edge-of-field,” and there must be an agent capable of continuing the trans- port of P from edge-of-field to the aquatic system. Except where P leaching is sig- nificant, the edge-of-field ... environment are important factors in under- standing the potential for, and impacts of, P transport through watersheds in agricul- tural and native landscapes. The fate and transport of P dep...

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... triflu- ralin, dicamba, DCPA, and 2-4 -D. The most frequently detected insecticides were aldicarb and its degradates and carbofuran, whereas the most widely detected fumi- gants were 1,2-dibromo-3-chloropropance ... no-tillage and pre- emergent, disk and pre-emergent, plow and pre-emergent, disk and preplant incorpo- rated, and plow and preplant incorporated. In total, 63....

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... loads for organic carbon, total N, and total P for a completely forested watershed, a cropland/riparian forest watershed, and a pas- ture-dominated watershed for a 4-year period in the Rhodes River ... CZARA. Nonpoint source pollution control related to the livestock industry that is covered by the Act includes large- and small-animal confinement facilities, plant nutrients, an...

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... AFFECTING NONPOINT SOURCE POLLUTION Nonpoint source pollution in arid and semiarid areas of the western United States and elswhere is the result of irrigating land in these areas. Thus, developing and ... spe- cial circumstances and may not reflect the field-wide uniformity. 7.5 REDUCING DRAINAGE FROM IRRIGATED LAND: A CONCEPTUAL APPROACH Reducing nonpoint source pollution...

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... Computations 8.5.4 System Layout and Installation 8.5.5 Operations and System Management 8.6 Soil and Crop Management Aspects of Water-Table Management 8.7 Water Quality Impacts 8.7.1 Hydrology 8.7.1.1 Conventional ... systems. 8.6 SOIL AND CROP MANAGEMENT ASPECTS OF WATER-TABLE MANAGEMENT The Southeast and Mid-Atlantic Coastal Plain have variable rainfall during the gro...

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... to develop and apply 3-D data structures and processing techniques to improve the capabilities of current GIS-WQ-modeling sys- tems (Lee et. al., 109 Tempfli, 110 Lin and Calkins 111 ). Finally, ... provides high-resolution and up-to-date data (Lillesand and Kiefer 83 ). Current commercial earth-orbiting satellites that can be used for this purpose include IKONOS, IRS, SPOT-4,...

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