Soil and Environmental Analysis: Physical Methods - Chapter 13 ppt

... unsaturated soil zone. Tellus, 42B:20 –28. Gas Movement and Air-Filled Porosity 533 Copyright © 2000 Marcel Dekker, Inc. Ayres, K. W., R. G. Button, and E. de Jong. 1972. Soil morphology and soil physical properties. ... and in particular may differ mark- edly between soil horizons. We consider here techniques for measuring diffusion and flow of gases and air-filled porosi...

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... K s and S (Eq. 15), and by measuring u s and u n , Eqs. 26 and 28 give us functional descriptions of the soil s D(u) and K(h). These capillary and gravity properties allow us to infer some pore-geo- metric ... 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:...

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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. ... Modeling and experimental validation. Soil Sci. Soc. Am. J. 63:1571–1579. Blackwell, P. S., and M. J. Elsworth. 1980. A system for automatically measuring and recor...

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... time duration to, field capacity. S. Afr. J. Plant Soil 1 : 126 131 . Beven, K. 1981. Micro-, meso-, macroporosity and channeling flow phenomena in soils. Soil Sci. Soc. Am. J. 45:1245. Bird, N. R. A. ... land use problems. Soil Use Manage- ment 2 : 125 130 . Bouyoucos, G. J. 1929. A new, simple and rapid method for determining the moisture equivalent of soils, and the role of soil...

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... 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 Mineralogical Methods (A. ... seepage into pits. Soil Sci. Soc. Am. J. 48: 10 –15. Bouma, J. 1977. Soil Survey and the Study of Water in Unsaturated Soil. Soil Survey Pa- pers, No. 13. Wageningen: Nether...

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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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... 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; ... Haverland, R. L., Hendricks, D. M., and Knisel, W. G. 1984. Microtrac particle size analyzer: An alternative particle size determination method for sedi...

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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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... 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 methods of liquid limit ... 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 meas...

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... soil- machine systems. Trans. Am. Soc. Agric. Eng. 13: 201– 213. Gerard, C. J. 1965. The influence of soil moisture, soil texture, drying conditions and ex- changeable cations on soil strength. Soil ... Press. McIntyre, D. S., and C. B. Tanner. 1959. Anormally distributed soil physical measurements and non-parametric statistics. Soil Sci. 88 :133 137 . Misra, R. K., A. R...

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