Soil and Environmental Analysis: Physical Methods - Chapter 7 ppsx

... 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 ; ... Stephens, W. E., and Shawa, M. S. 1980. Reading segmented grain-size curves. Geol. Mag. 1 17 : 5 17 524. Webster, R., and Oliver, M. A. 1990. Stati...

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... vegetation on upland peaty gley soil and deep peat soils. J. Soil Sci. 37 : 485 – 4 97. Klute, A., and W. R. Gardner. 1962. Tensiometer response time. Soil Sci. 93 : 204 –2 07. Lang, A. R. G. 19 67. Psychrometric ... field. Plant Soil 97 :145–149. McGowan, M. 1 974 . Depths of water extraction by roots: Applications to soil- water bal- ance studies. In: Isotopes and Radiatio...

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... equivalent. Soil Sci. 27: 233–241. Briggs, L. J., and McLane, J. W. 19 07. The moisture equivalent of soils. Bur. Soils Bull. No. 45. U.S. Department of Agriculture. British Standards Institution. 1 975 . Soils ... is used on a routine basis in England and Wales (Hall et al., 1 977 ). A tin-plated sleeve 7. 5 cm diameter and 5.0 cm high is placed in a machined steel barrel and a c...

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... 468 435 375 331 306 296 295 292 280 2 47 193 0 .75 544 522 503 473 418 376 351 339 338 335 322 2 87 230 0.5 643 623 605 576 521 477 448 441 440 4 37 416 376 306 2 1 215 204 193 178 155 143 1 37 135 133 ... 47. 6 46.6 46.4 45.9 44.8 42.1 0.5 76 .7 73.5 71 .1 67. 4 62.5 60.2 59.1 58.8 58.3 57. 1 54.1 10 1 21.0 19.6 18 .7 17. 5 16.4 15.8 15.5 15.5 15.4 15.2 14.6 0 .75 22.2 21.0 20.2 19.1...

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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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... heavy clay soils: I. J. Agr. Sci. 26: 114 –1 27. Childs, E. C. 19 67. Soil moisture theory. Adv. Hydrosci. 4 : 73 –1 17. Childs, E. C., and Collis-George, N. 1948. Soil geometry and soil- water equilibria, ... water-repellent soil. 1. Potential and actual water repellency. Water Resour. Res. 30 : 25 07 25 17. Dixon, R. M. 1 975 . Design and use of closed-top infiltrometers....

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... Drain. Eng. 121 : 170 – 178 . Pidgeon, J. D., and B. D. Soane. 1 977 . Effects of tillage and direct drilling on soil properties during the growing season in a long-term barley mono-culture system. ... barley growing, II. Soil physical conditions. Proc. Int. Soil Tillage Conf., Silsoe, U.K., pp. 58 76 . Soane, B. D., D. J. Campbell, and S. M. Herkes. 1 971 . Hand-held gamma-ray...

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... strength and liquidity index and also be- tween compression index and plasticity index (Wroth and Wood, 1 978 ). C. Other Methods Several workers have devised methods of measuring liquid and plastic ... Sherwood and Ryley, 1968, 1 970 a, b) and agriculture (Towner, 1 974 ; Campbell, 1 975 ; Wires, 1984). Generally, the two tests give equivalent results (Littleton and Farmi...

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... G. Bengough, and G. J. Ley. 19 87. Hard-setting soils. Soil Use Manag. 3 : 79 – 83. Mulqueen, J., J. V. Stafford, and D. W. Tanner. 1 977 . Evaluating penetrometers for measur- ing soil strength. ... 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...

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... 1969; Soileau et al., 1 974 ; Free- man and Smart, 1 976 ; 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 ... pack air-dried soil around the tube to get good contact between glass and soil. Observations were made of the effects of cultiva- tion on spring barley and oilseed rape...

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