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Estimating the water-dispersible clay content of soils


, : Estimating the water-dispersible clay content of soils. Soil Science Society of America Journal 56(4): 1226-1232

Soil erodibility is influenced by several soil properties including the extent to which the clay fraction will disperse in water. Because early methods for estimating soil erosion were empirical methods and did not utilize water-dispersible clay as a parameter, few data have been collected. The recent development of the Water Erosion Prediction Project (WEPP) model, a process-based model for predicting water erosion that uses water-dispersible clay in the algorithm for computing interrill erodibility, resulted in an increased demand for these data. In order to accommodate this and similar models, a method for estimating the water-dispersible clay content of soils based on existing information is needed. Data collected by the National Soil Survey Laboratory in support of the WEPP were used to identify soil properties that were significantly correlated with water-dispersible clay and to develop equations to estimate the water-dispersible clay content of soils based on those properties. The property most strongly correlated with water-dispersible clay is total clay. Other properties significantly correlated with water-dispersible clay are the water content at 1.5 MPa, dithionite-citrate-extractable Fe and Al, the coefficient of linear extensibility, Wischmeier's M, the very-fine-sand content, the ratio of cation-exchange capacity (CEC) to total clay, Bouyoucos' clay ratio, and the CEC. A simple linear regression of water-dispersible clay vs. total clay revealed that, for the soils included in this study, approximately one-third of the total clay was water dispersible. However, the model only had an R-2 of 0.604. When the ratio of the CEC corrected for organic carbon (CCEC) to total clay was included in the model, the R-2 improved to 0.723. However, sorting the data by the ratio of CCEC to total clay instead of including it in the model improved the overall fit of the model and increased the R-2 to 0.879.

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Accession: 002373047

DOI: 10.2136/sssaj1992.03615995005600040036x

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Mali, V.R.; Vyanjane, N.T., 1980: Occurrence of tobacco mosaic virus on passion-flower (Passiflora caerulea). On the basis of transmission studies, host range, physical properties and serology, the virus involved in passion flower mosaic disease was identified as TMV. No aphid transmission was obtained in repeated tests, reversing earlier reports.

Gergely, R. B., 1988: The role of tourism in the opinion of tourists and the population of tourist regions. The social effects of tourism and human aspects, including both the problems and positive consequences for relations between tourists and the local population are considered, based on the results of a 1985 survey carried out in Hungary.

Whatley Walter F., 1971: Development History and Waterflood Performance of a Heterogeneous and Highly Under-Saturated Minnelusa Reservoir. Lithofacies of producing reservoir, engineering characteristics, Dillinger Ranch Field, Wyoming.

Sokolyanskii, P.S.; Stepanenko, G.K., 1973: Combination of cultural and chemical methods for controlling Ambrosia artemisiifolia in a rotation. In rotations of fallow/winter wheat/maize for grain/maize for silage/winter wheat/Sudan grass for hay grown on chernozem soil in 1961-9, combination of conventional cultivation techniques (disking of stubbles, ploughing and pre-sowing cultivation)...

Collins, D.J.; Stone, G.M.; Axelson, M., 1983: The structure and function of oestrogens. VII. The use of (9,12,12-2H3)- and (11xi,12,12-2H3) oestradiol in a test of the quinone methide hypothesis for oestrogen action. Ovariectomized mice were injected intravaginally with a physiological dose of (9,12,12-2H3)oestradiol (3), and a control group was similarly injected with (11xi,12,12-2H3)oestradiol (4). Gas-liquid chromatography/mass spectrometry (g.l.c./m.s.) an...

Corbeil, L.B.; Duncan, J.R.; Schurig, G.G.; Hall, C.E.; Winter, A.J., 1974: Bovine venereal vibriosis: variations in immunoglobulin class of antibodies in genital secretions and serum. In the local immune response to Vibrio fetus, IgM antibodies appeared first in cervicovaginal mucus, IgA antibodies next, and IgG last. IgM antibodies were transient, IgG antibodies remained longer, and IgA persisted until the end of the experimen...

Pokela, R.; Tarkka, M.; Lepojärvi, M.; Nissinen, J.; Kärkölä, P.; Kairaluoma, M.I., 1989: Surgery of thoracoabdominal aneurysms. Seventeen patients with thoracoabdominal aneurysms, including 5 ruptured aneurysms, were operated upon using a left diaphragm-splitting thoracoabdominal incision and the retroperitoneal route. A temporary shunt was used in 13 patients, femorofemor...

Erbek, S.S.; Erbek, H.Seyra.; Yilmaz, S.; Topal, O.; Yucel, E.; Ozluoglu, L.N., 2006: Cochleovestibular dysfunction in ankylosing spondylitis. Ankylosing spondylitis (AS) is a rheumatic disease characterized by chronic inflammation. The aim of this study was to evaluate the functions of the cochlea and the vestibular system in patients with AS. The study group consisted of 32 patients wi...

D.M.rco, G.; Gismondi, A.; Canuti, L.; Scimeca, M.; Volpe, A.; Canini, A., 2015: Tetracycline accumulates in Iberis sempervirens L. through apoplastic transport inducing oxidative stress and growth inhibition. Environmental antibiotic contamination is due mainly to improper and illegal disposal of these molecules that, yet pharmacologically active, are excreted by humans and animals. These compounds contaminate soil, water and plants. Many studies have...

Goetz A.; Hauf P.; Shipper M.; Maecher A., 1991: Field identification of OH-bearing minerals in the 0.9-1.0 um region. International Geoscience and Remote Sensing Symposium 11: 2065-2068