Soil and Environmental Analysis: Physical Methods - Chapter 6 pptx

... (1 961 ) and Youngs (1972) used an elec- trical-analog approach, whereas Wooding (1 968 ) provided a simple expression based on the properties of the soil (Eq. 16) . The ASTM standard double-ring in- filtrometer ... heavy clay soils: I. J. Agr. Sci. 26: 114 –127. Childs, E. C. 1 967 . Soil moisture theory. Adv. Hydrosci. 4 : 73 –117. Childs, E. C., and Collis-George, N. 1948. Soil g...

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... Agron., pp. 61 9– 63 3. Cassell, D. K., and A. Klute. 19 86. Water potential: Tensiometry. In: Methods of Soil Anal- ysis, Part 1 (A. Klute, ed.). Madison, WI: Am. Soc. Agron., pp. 563 –5 96. Cannell, ... 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 bu...

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... 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. 19 86. Water retention: Field methods. In: Methods of Soil ... pp. 66 3 68 6. Buchan, G. D., and Grewel, K. S. 1990. The power-function model for the soil moisture characteristic. J. Soil Sci. 41: 111–117. Buckingham, E. 1907. Studies...

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... 20 5 .6 5.5 5.3 5.0 4.4 3 .6 0 5 .6 5 .6 5.8 6. 3 7.4 10.2 ϱ 16 5 .6 5.5 5.3 5.0 4.4 3 .6 0 5 .6 5 .6 5.8 6. 4 7.5 10.3 ϱ 12 5 .6 5.5 5.4 5.1 4.5 3.7 0 5 .6 5.7 5.9 6. 5 7 .6 10.4 ϱ 8 5.7 5 .6 5.5 5.2 4 .6 3.8 ... 17.1 16. 8 16. 2 0.5 27.0 25.9 24.9 23.9 22 .6 22.0 21.8 21.7 21 .6 21.3 20 .6 20 1 6. 86 6.41 6. 15 5.87 5.58 5.45 5.4 5.38 5. 36 5.31 5.17 0.75 7.27 6. 8...

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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- 67 1; ... Testing and Materials, Philadelphia). 1998a. Annual Book of Standards . Vol. 15.02. Designation C690 – 86 (Re-approved 1992); and addi- tional...

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... undisturbed soil cores by gamma-ray attenuation. New Zealand Soil Bureau, Report 67 . Sharratt, B. S. 19 96. Tillage and straw management for modifying physical- properties of a sub-arctic soil. Soil Till. ... Allmaras, and W. E. Larson. 1 966 . Porosity of surface soil aggre- gates at various moisture contents. Soil Sci. Soc. Am. Proc. 30: 163 – 167 . Wiersum, L. K. 1957. Th...

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... (B) Plasticity index 76. 2 73.7 561 5 12.8 95.0 17 .6 167 2 11.2 19.0 65 .9 1252 10.3 60 .5 40.4 2444 8.8 48.0 38.5 1848 8.1 29.2 26. 8 782 6. 2 26. 8 19.4 519 5.1 1.4 52.2 73 3 .6 Copyright © 2000 Marcel ... topsoils using a drop-cone pene- trometer. J. Soil Sci. 26 :234–240. Campbell, D. J. 1976a. The occurrence and prediction of clods in potato ridges in relation to soil phy...

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... Atlantic coastal plains soils and relationships with soil physical, chemical and mineralogical properties. Soil Sci. Soc. Am. J. 46: 100 –1 06. Stolzy, L. H., and K. P. Barley. 1 968 . Mechanical resistance ... Reference Remolded sandy loam 1 Parabolic probe 1 4 – 8 12 Eavis (1 967 ) Remolded sandy loam 3 30 0.17 4.5– 6 2 Stolzy and Barley (1 968 ) Sandy loam, remolded cores...

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... cm Ϫ 3 ) SC MR 0 –18 38 25 68 46 10 .6 6.8 18– 36 9.5 13 17 24 2 .6 3 .6 36 –54 2.8 4.9 5 11 0 .6 1.4 54 –72 5.5 10 10 19 1.5 2.8 Total 56 53 CV% 53 14 Source: Sanders and Brown, 1978. Copyright © ... coring and by the minirhizotron (Sanders and Brown, 472 Atkinson and Dawson Copyright © 2000 Marcel Dekker, Inc. and Murray, 1 968 ; Taylor, 1 969 ; Hilton et al., 1 969 ; Soi...

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