TL;DR: In this article, the effects of cultivation and erosion on organic matter transformations were studied by systematically sampling slope positions on three paired rangeland and cropland toposequences.

TL;DR: In this paper, the relative relationship between shrinkage (measured by the coefficient of linear extensibility, COLE), Atterberg limits (liquid and plastic) and physical and chemical properties were established and indicate possibilities of estimating mechanical properties from known pedological data.

TL;DR: In this paper, the effects of air-drying field-moist soils on the adsorption and desorption of added phosphate and on the levels of extractable native soil phosphate were examined using the A and B horizons of a group of four acid soils.

TL;DR: In this paper, the authors used data from 303 loess-derived soil samples, primarily Alfisols and Mollisols from the central United States, were used to estimate differences in the carbon content of cultivated and uncultivated soils.

TL;DR: In this paper, three soil nodules and an iron pan have been analyzed for the elements Al, Si, Ti, V, Mn, Fe, Co, Ni, Cu and Zn using an electron microprobe.

TL;DR: In this article, the efficiency of application of different amounts of phosphogypsum (PG) and the methods of application in runoff control was tested for 3 years in small field-plots using a portable rainfall simulator and in runoff plots (Wischmeier plots) located in commercial wheat fields.

TL;DR: In this paper, the geomorphology of two ranas and a specimen soil profile on each have been studied in the Province of Guadalajara, Central Spain, and the results support earlier suggestions that the younger ran asurface (S-1) is of Donau age (Middle Villafranchian) but indicate that the second should be assigned to the Middle-Upper Pliocene (Lower Villa-ranchian).

TL;DR: In this article, a study of five Lithic Cryofolists in the Nationalpark Berchtesgaden, southern Bavaria was conducted, where four different terrestrial humus types were distinguished: Mullmoder (L + O: 2.5 cm), Tangelmor (L+ O: 34 and 60 cm), Moder (L 2 O: 7.5cm), Mor (L 3 O: 20 cm), and TangelMor (L 4 O: 14 cm).

TL;DR: Phenolic acid content in NaOH and water-extracts from cashew leaves and from the associated humus profile was studied in this paper, where free and bound forms of water-soluble phenolic acids were evaluated separately.

TL;DR: In this paper, a freeze-fracture technique was used to prepare replicas of interlayer surfaces of a hydroxy-aluminum montmorillonite (OH-Al-SWy-1), synthesized by titrating an Al-clay with NaOH.

TL;DR: In this paper, the 13C NMR spectra of four humus types, namely, crust, felty, greasy and granular raw humus, were analyzed by wet chemical methods and by 13c NMR.

TL;DR: In this article, water removal by immersion in acetone of clay, peat and sandy loam soil materials has been monitored by NMR spectroscopy. Water can be removed from soils and sediments more quickly than described previously by using more frequent changes of acetone and by causing gentle movement of the acetone using a magnetic stirrer.

TL;DR: In this article, the relationship of cutan orientation patterns to soil development in the Piedmont and Blue Ridge Provinces of North Carolina was investigated and it was shown that illuviation is largely intermittent in occurrence.

TL;DR: In this article, electron microscopy was used to observe the effects of the addition of water-extracted components from sewage sludge on the fabric of kaolinite and montmorillonite saturated with Na or Ca.

TL;DR: In this paper, the levels of mercury were determined for horizons or layers of eleven profiles in agricultural areas and three in industrial areas of Greece, ranging from 25 to 98 ppb in profiles from agricultural areas.

TL;DR: In this article, electron spin resonance and Mossbauer spectroscopy were used to obtain information on the nature of the bonding and of the oxidation state of iron in complexes of iron-humic substances, some prepared in the laboratory and others extracted from samples of Greek soils developed under different vegetative covers.

TL;DR: In this article, Liu et al. analyzed 30 soil samples from China for exchangeable K before and after drying and found that the degree of weathering had an inverse relationship with the amount of K released on drying in air or at 60°C.

TL;DR: Particle-size distributions of horizons of 600 profiles derived from crystalline rocks were plotted on right-angled texture triangles as discussed by the authors and the resulting curves, called particle displacement paths, demonstrate that only a small number of types of such paths are common and distinctive.

TL;DR: In this article, the total amounts and principal fractions of sulfur were determined by horizons in four profiles differing in water regimes and reactions, and the sulfur reserves in the soils ranged from 1153 to 4305 kg/ha-solum.

TL;DR: In this paper, electron micrographs showed that the densipan was a close-fit configuration of sand and silt-sized quartz particles that attained a high density without cementation of particles.

TL;DR: In this paper, three pedological features associated with hard, residual fragments of limestone from a calcareous soil profile from southern France, have been observed and analysed in thin sections, and they show that biological interventions may constitute a more effective weathering agent in some soils developed from hard limestone parent rock in a mediterranean environment.

TL;DR: The effects of bituminous emulsions on the retention and release of some nutrient elements and heavy metals were investigated in the laboratory for a pair of different soil samples, one from each of Egypt and Belgium.

TL;DR: Several profiles overlying chalk of the lower Danian were examined and described in this paper adjacent to the northeastern seacoast of Djursland, and samples were then taken from three profiles to represent the horizons and the underlying chalk residue.

TL;DR: In this article, total amounts of phosphorus and quantities in the organic form and in various fractions of the inorganic form were determined in samples of surface layers of nine soils from five major agricultural areas of Saudi Arabia (Al-Hasa, Qassim, Wadi Dawasir, AlKharj and Taif).

TL;DR: In this article, a grid sampling approach was used to determine the effect of environmental characteristics (soil series and associated soil property differences) on alfalfa (Medicago sativa L.) yields in the third crop year from a randomized complete block design.

TL;DR: In this paper, a polymer resembling humic acid was prepared by oxidation of 3,4-dihydroxycinnamic acid (caffeic acid) with periodic acid, and the polymer was then subjected to reductive cleavage with sodium amalgam.

TL;DR: In this paper, the authors examined the topology of Tertiary marls in the south-eastern part of the “Bassin Aquitain” and found calcite as relics in the upper horizons of the calcareous brown soil and in the form of accumulations in the Bca and Cca horizons.