Soil and Environmental Analysis: Physical Methods - Chapter 14 potx

... the interactions of soil temperature regime, and soil- based environmental processes, such as soil atmosphere gas exchange, solute transport, and the fate of soil and groundwater contaminants. ACKNOWLEDGMENTS The ... may be handheld, are avail- able with both narrow-angle (e.g., 3Њ) and wide-angle (e.g., 60Њ) fields of view. Air- or satellite-borne scanning IRTs are used in rem...

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... field. Plant Soil 97 :145 149 . McGowan, M. 1974. Depths of water extraction by roots: Applications to soil- water bal- ance studies. In: Isotopes and Radiation Techniques in Soil Physics and Irrigation Studies. ... electrical resistance units and gypsum materials. Soil Sci. 86: 140 147 . Phene, C. J., and D. W. Beale. 1976. High-frequency irrigation for water nutrient manage-...

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... B. W. 1980. Soil Classification for England and Wales. Soil Survey Tech. Monogr. No. 14. Harpenden, U.K. Ball, B. C., and Hunter, R. 1980. Improvements in the Routine Determination of Soil Pore ... images of soil porosity for analysing soil compaction around roots. Soil Sci. Soc. Am. J. 60: 895 –901. Bruce, R. R., and Luxmoore, R. J. 1986. Water retention: Field methods. In...

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... Soils 143 Table 1 Hydraulic Conductivity Values of Saturated Soils Soil Hydraulic conductivity (mm d Ϫ 1 ) Fine-textured soils Ͻ 10 Soils with well-defined structure 10 –1000 Coarse-textured soils ... Bureau of Standards. Amoozegar, A., and Warrick, A. W. 1986. Hydraulic conductivity of saturated soils: field methods. In: Methods of Soil Analysis. Part 1. Physical and Mineralogic...

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... Equipment 5. Standard for soil laboratory 4. General-purpose, off-the-shelf 3. Easily made in average machine shop 2. Special-purpose, off-the-shelf 1. Special-purpose, custom-made I. Operator ... seal the soil col- umn for unsaturated measurements) and protects the soil column in the field and during transport to a laboratory. Somewhat more disturbed soil columns from en- tire so...

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... heavy clay soils: I. J. Agr. Sci. 26: 114 –127. Childs, E. C. 1967. Soil moisture theory. Adv. Hydrosci. 4 : 73 –117. Childs, E. C., and Collis-George, N. 1948. Soil geometry and soil- water equilibria, ... USDA-SEA-AR, ARM-W-10/July 1979, pp. 85–90. Amerman, C. R., et al. 1979. Proceedings of the Rainfall Simulator Workshop, Tucson, Arizona, March 7–9, 1979. Sidney, Montana: USDA-...

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... 1981a: NF-X-1 1-6 83; 1981b: NF-X-1 1-6 30; 1982: NF-X-1 1-6 42; 1983a: NF-X-1 1-6 85; 1983b: NF-X-1 1-6 93; 1983c: NF-X-3 1-1 07; 1984: NF-X-1 1-6 82; 1990: NF-X-1 1-6 61; 1992: NF-X-1 1-6 67; 1997a: NF-X-1 1- 671; ... This chapter touches on some of the techniques available. We aim to discuss the principles, origins, and limitations of some standard methods and...

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... undisturbed soil cores by gamma-ray attenuation. New Zealand Soil Bureau, Report 67. Sharratt, B. S. 1996. Tillage and straw management for modifying physical- properties of a sub-arctic soil. Soil Till. ... direct and indirect methods are detailed. Direct methods discussed in- clude the core sampling, rubber balloon, sand replacement, and clod methods. Indirect methods...

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... strength and liquidity index and also be- tween compression index and plasticity index (Wroth and Wood, 1978). C. Other Methods Several workers have devised methods of measuring liquid and plastic ... carboniferous clay soils in north cen- tral Ireland and their significance. Ir. J. Agric. Res. 15:129 –135. Nagaraj, T. S., and M. S. Jayadeva. 1981. Re-examination of one-point...

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... between soil strength, bulk density and soil water pressure head of sandy top-layers of grass sportsfields. Z. Vegetationstech- nik 1:53 –58. Voorhees, W. B., D. A. Farrell, and W. E. Larson. 1975. Soil ... –297. Anderson, G., J. D. Pidgeon, H. B. Spencer, and R. Parks. 1980. A new hand-held recording penetrometer for soil studies. J. Soil Sci. 31 : 279–296. Ball, B. C., and...

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