Download Agricultural nonpoint source pollution : watershed by William F. Ritter, Adel Shirmohammadi PDF

By William F. Ritter, Adel Shirmohammadi

Content material: Hydrology / Mary Leigh Wolfe -- Soil erosion and sedimentation / Mark A. Nearing, L. Darrell Norton, and Xunchang Zhang -- Nitrogen and water caliber / William F. Ritter and Lars Bergstrom -- Phosphorus and water caliber affects / Kenneth L. Campbell and Dwayne R. Edwards -- insecticides and water caliber affects / William F. Ritter -- Nonpoint resource pollutants and cattle manure administration / William F. Ritter -- Irrigated agriculture and water caliber affects / Blaine R. Hanson and Thomas J. Trout -- Agricultural drainage and water caliber / William F. Ritter and Adel Shirmohammadi -- Water caliber versions / Adel Shirmohammadi ... [et al.] -- most sensible administration practices for nonpoint resource pollutants keep watch over / Saied Mostaghimi ... [et al.] -- tracking / William L. Magette

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And Burney, J. , Surface runoff, storage, and routing, in Hydrologic Modeling of Small Watersheds, Haan, C. , Johnson, H. , and Brakensiek, D. , ASAE, St. Joseph, MI, 1982, 167. 17. SCS, Hydrology, Section 4. S. Soil Conservation Service, GPO, Washington, DC, 1972. 18. Rasmussen, T. C. and Evans, D. , Water infiltration into exposed fractured rock surfaces, Soil Sci. Soc. Am. J. 57, 324, 1993. 19. Edwards, D. R. and T. C. Daniel, Abstractions and runoff from fescue plots receiving poultry litter and swine manure, Trans.

When considering soil moisture movement earlier, Richards equation was written for flow in the vertical direction. 16) where Ss is specific storage (LϪ1), defined as the volume of water that a unit volume of porous medium releases from storage per unit change in hydraulic head, and other variables are as defined previously. 18) The solution to the Laplace equation gives the hydraulic head in terms of x, y, and z. The solution of the full equation for transient flow in an anisotropic medium gives H in terms of t as well as x, y , and z.

33. Slack, D. , Modeling infiltration under moving sprinkler irrigation systems, Trans. ASAE, 23, 596, 1980. 34. Slack, D. C. and Larson, C. , Modeling infiltration: the key process in water management, runoff, and erosion, in Tropical Agricultural Hydrology, Lal, R. and Russell, E. , New York, 1981. 35. , Soil and Water: Physical Principles and Processes, Academic Press, New York, 1971. 36. McWhorter, D. , Vertical flow of air and water with a flux boundary condition, Trans. ASAE, 19, 259, 1976.

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