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Physical Sciences and Mathematics Commons™
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Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
External Development: Turning Problems Into Opportunities, T. Destry Jarvis
External Development: Turning Problems Into Opportunities, T. Destry Jarvis
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
9 pages.
Pollution In Parks: A Publication Of The National Park Service, Richard H. Briceland
Pollution In Parks: A Publication Of The National Park Service, Richard H. Briceland
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
28 pages (includes illustrations).
Contains references.
After The Concrete Sets: The Future Role Of The Bureau Of Reclamation In Western Water Management, John D. Leshy
After The Concrete Sets: The Future Role Of The Bureau Of Reclamation In Western Water Management, John D. Leshy
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
23 pages.
Contains references.
Innovative Approaches To Water Allocation: The Potential For Water Markets, Charles W. Howe
Innovative Approaches To Water Allocation: The Potential For Water Markets, Charles W. Howe
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
20 pages.
Long-Term Effects Of Tillage On The Retention And Transport Of Soil Water, H. D. Scott, L. S. Wood, W. M. Miley
Long-Term Effects Of Tillage On The Retention And Transport Of Soil Water, H. D. Scott, L. S. Wood, W. M. Miley
Technical Reports
Quantitative measurements were made of the physical and chemical properties of two virgin prairie soils, Crowley and Jay, that remain in their native Arkansas environments and of similar soils that had been tilled extensively. Comparisons were made of soil properties at several depths. When compared with the tilled soils the virgin soils had higher organic matter contents, saturated hydraulic conductivities and water retained at several applied pressures. Bulk densities and hydraulic resistances were lower in the virgin soils. For the Crowley silt loam, values of pH and elemental contents of the virgin soil were higher than those of the tilled …