Results 151 to 160 of about 623,675 (214)

Soil Profile Classes

2018
The previous chapter discussed the possibility of using pedometric techniques to make numerical classifications of soil material and soil layers. Of course it is not a step too far to use pedometric techniques to make classifications of entire profiles also. That is the subject of this chapter.
Odgers, Nathan P., Mcbratney, Alex B., Carre, Florence   +2 more
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Carbofuran degradation in soil profiles

Journal of Environmental Science and Health, Part B, 1997
Two soils, Puyallup fine sandy loam from Puyallup, WA, and Ellzey fine sand from Hastings, FL, each with a prior history of carbofuran exposure but with different pedological and climatological characteristics, were found to exhibit enhanced degradation toward carbofuran in surface and subsurface soil layers.
S L, Trabue, X, Feng, A V, Ogram, L T, Ou   +3 more
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Characterisation of Soil Profile Roughness

Biosystems Engineering, 2005
By using a laser profiler, the surface height variation trace of three types of tillage soil profiles, that is ploughed, harrowed and rolled surface, are obtained. In order to acquire the different direction profiles of every tillage type, the profiles at 0 (parallel), 45 and 90 (perpendicular) degrees with respect to the tillage direction are measured.
Zhixiong, L., Nan, C., Perdok, U.D., Hoogmoed, W.B.   +3 more
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Drainage of Soil Profiles

Journal of the Irrigation and Drainage Division, 1971
The scaled approximations of Brooks and Corey for water content versus capillary pressure and capillary conductivity versus water content were used to obtain a scalded diffusion function that was dependent only upon the pore-size distribution index, λ. A predictor-corrector finite difference scheme was used to obtain numerical solutions for the scaled ...
Royal H. Brooks, Benedict Ng, Gilbert L. Corey, Arthur T. Corey   +3 more
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Vertical profile of 137Cs in soil

Applied Radiation and Isotopes, 2004
In this paper, a vertical distribution of 137Cs in undisturbed soil was investigated experimentally and theoretically. Soil samples were taken from the surroundings of the city of Kragujevac in central Serbia during spring-summer of 2001. The sampling locations were chosen in such a way that the influence of soil characteristics on depth distribution ...
D, Krstić, D, Nikezić, N, Stevanović, M, Jelić   +3 more
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Soil Temperature Profiles of Two Alaskan Soils

Soil Science Society of America Journal, 1987
Abstract Soil temperatures of a thawed phase of a Pergelic Cryaquept were measured with copper‐constantin thermocouples at 20, 50, 100, 150, 210, 240, and 300 cm under a fallow plot for 5 yr in Fairbanks, AK. Soil temperatures of a Typic Cryorthent were measured the same way at 5, 10, 20, 50, 100, 150, and 300 cm under both grass and ...
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Soil Profiling and Management

"The edited book comprises of eighteen chapters, with an equal emphasis given to the discussion of various items related to soil science in all of the chapters. This has been done keeping in mind the needs of students, scientists, plant nutritionists, and other individuals who are interested in studying soil science and soil health.
Amar Singh Gaur, Jagannath Pathak
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Soil surface shrinkage to estimate profile soil water

Irrigation Science, 1991
The surface elevation of a shrinking soil provided good estimates of the change in profile water content under alfalfa. Surface shrinkage was found to change linearly with water content as measured by neutron and gamma attenuation devices. Extracted soil cores were tested in the laboratory to obtain the linear shrinkage ratio, b.
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