Soil and Environmental Analysis: Physical Methods - Chapter 4 pot

... 1 54 152 152 151 148 140 123 0.5 271 261 252 240 218 203 196 1 94 1 94 193 190 181 161 5 1 60.2 56.3 53.6 49 .6 44 .9 42 .8 41 .9 41 .5 41 .2 40 .1 37.6 0.75 63.6 60.3 57.9 54. 3 47 .6 46 .6 46 .4 45.9 44 .8 ... 518 49 0 46 8 43 5 375 331 306 296 295 292 280 247 193 0.75 544 522 503 47 3 41 8 376 351 339 338 335 322 287 230 0.5 643 623 605 576 521 47 7 44 8 44 1 44 0...

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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 ... 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...

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... direct and indirect methods are detailed. Direct methods discussed in- clude the core sampling, rubber balloon, sand replacement, and clod methods. Indirect methods include both the backscatter and ... bulk density of soil clods. J. Soil Sci. 24: 239– 243 . Campbell, D. J. 1976. The occurrence and prediction of clods in potato ridges in relation to soil physical proper...

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... A 2 /A 1 is 0. 14 for T 0 but 0. 24 for R s . For the smoother annual wave (Fig. 6), a two-harmonic fit is adequate for both soil (van Wijk and de Vries, 1963; Persaud and Chang, 1985) and air (Ta- bony, 19 84) ... the interactions of soil temperature regime, and soil- based environmental processes, such as soil atmosphere gas exchange, solute transport, and the fate of so...

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... to soil- water bal- ance studies. In: Isotopes and Radiation Techniques in Soil Physics and Irrigation Studies. Vienna: IAEA, pp. 43 5– 44 5. McQueen, I. S., and R. F. Miller. 1968. Calibration and ... 3rd Int. Congr. Soil Sci.,Vol.2, pp. 37– 48 . Scholl, D. G. 1978. A two-element ceramic sensor for matric potential and salinity mea- surements. Soil Sci. Soc. Am. J. 42 :4...

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... 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 :1 245 . Bird, N. R. A. 1997. Comments ... equivalent. Soil Sci. 27:233– 241 . Briggs, L. J., and McLane, J. W. 1907. The moisture equivalent of soils. Bur. Soils Bull. No. 45 . U.S. Department of Agriculture. British Stand...

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... heavy clay soils: I. J. Agr. Sci. 26: 1 14 –127. Childs, E. C. 1967. Soil moisture theory. Adv. Hydrosci. 4 : 73 –117. Childs, E. C., and Collis-George, N. 1 948 . Soil geometry and soil- water equilibria, ... J. 45 : 241 – 245 . Clothier, B. E., I. White, and G. J. Hamilton. 1981. Constant-rate rainfall infiltration: Field experiments. Soil Sci. Soc. Am. J. 45 : 245 – 249 ....

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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; 19 84: NF-X-1 1-6 82; 1990: NF-X-1 1-6 61; ... 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. Pa...

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... topsoils using a drop-cone pene- trometer. J. Soil Sci. 26 :2 34 240 . Campbell, D. J. 1976a. The occurrence and prediction of clods in potato ridges in relation to soil physical properties. J. Soil ... – 45 mm diameter clods (N) (A) ϫ (B) Plasticity index 76.2 73.7 5615 12.8 95.0 17.6 1672 11.2 19.0 65.9 1252 10.3 60.5 40 .4 244 4 8.8 48 .0 38.5 1 848 8.1 29.2 26.8 782 6.2 26.8...

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... Agric. Eng. 48 : 348 – 349 . Cassel, D. K., and L. A. Nelson. 1979. Variability of mechanical impedance in a tilled one- hectare field of Norfolk sandy loam. Soil Sci. Soc. Am. J. 43 : 45 0 45 5. Cassel, ... loam aggregates 1 30 3 1.8–3.8 3 24 Misra et al. (1986b) Sandy loam, undisturbed cores 1 30 4 4.5–9 14 Bengough and Mullins (1991) Sandy loam, remolded cores 1 7.5 2 2.5– 4....

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