Soil and Environmental Analysis: Physical Methods - Chapter 10 docx

... Netherlands Field penetrometer with data logger, hand-held 8800 Leonard Farnell & Co. Ltd. North Mymms, Hatfield, Hert- fordshire AL9 7SR, UK Simple hand-held pene- trometer with dial gauge. 100 0 Ametek ... Sci. Soc. Am. J. 46: 100 106 . Stolzy, L. H., and K. P. Barley. 1968. Mechanical resistance encountered by roots entering compact soils. Soil Sci. 105 :297– 310. Taylor, H. M.,...

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... P. J., Y. K. Sud, and D. R. Neilsen. 1985. Spatial variability of field-measured soil- water characteristics. Soil Sci. Soc. Am. J. 49 : 107 5 108 2. Hagan, R. M., H. R. Haise, and T. W. Edminster, ... 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 den...

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... capacity from sieved sample data. Soil Sci. 101 :104 107 . Zur, B. 1966. Osmotic control of the matric soil- water potential: I. Soil- water system. Soil Sci. 102 :394 –398. 140 Townend et al. Copyright ... 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 meth...

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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 10 100 0 Coarse-textured soils ... 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: Netherlands Soil Surve...

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... Veaux and Steele (1989) demonstrated the procedure using data for a Mana- watu sandy loam (Clothier and Scotter, 1982) and found F[u] ϭ u 3 and G[t] ϭ e t , a ϭ 4.48 ϫ 10 Ϫ2 and b ϭϪ1.20 ϫ 10 Ϫ4 . ... 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 f...

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... USDA-SEA-AR, ARM-W -1 0/ 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-SEA-AR, ARM-W -1 0/ July 1979, ... air-entry and water-entry soil water pressure heads. Soil Sci. Soc. Am. J. 60: 103 6 103 9. Glover, R. E. 1953. Flow from a test-hole located above groundwater level, pp. 69...

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... Inc. 640; and subsequent documents: 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 61; 1992: NF-X-1 1-6 67; 1997a: NF-X-1 1- 671; 1997b: NF-X-1 1-6 36. Paris: AFNOR. Allen, T., Davies, R., and Scarlett, B., eds. 1996. P...

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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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... 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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