Soil and Environmental Analysis: Physical Methods - Chapter doc

... 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: Methods of Soil ... 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 Determin...

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... soil water potential. Soil Sci. Soc. Am. J. 46:900 –904. Campbell, G. S., and W. H. Gardner. 1971. Psychrometric measurement of soil water po- tential: Temperature and bulk density effects. Soil ... 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...

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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 ... 1980. A new hand-held recording penetrometer for soil studies. J. Soil Sci. 31 : 279–296. Ball, B. C., and M. F. O’Sullivan. 1982. Soil strength and crop emergence in di...

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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. ... 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-...

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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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... 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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... 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; ... d’air. Doc. NF-X-1 1- * There is a very large number of Standards dealing with aspects of particle size analysis. No Stan- dards organization publishe...

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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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... 1969; Soileau et al., 1974; Free- man and Smart, 1976; Karnok and Kucharski, 1982). The most recent are at Pell- ston, Michigan, U.S.A. (Fogel and Lussenhop, 1991) and Bangor, Wales (Sack- ville-Hamilton ... soil depths, can be prepared in the same way. Unlike pinboard and soil coring methods, this technique can be used on stony soils. The method is, however, labor-intensive a...

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