Results 251 to 260 of about 304,910 (303)
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Testing a New Procedure for Measuring Water‐Stable Aggregation
Soil Science Society of America Journal, 1996Abstract Aggregate stability is an important but difficult soil property to quantify and interpret. Numerous methods have been used to determine aggregate stability with varying success. This complicates the comparison among aggregate stability data.
Amezketa, E. +2 more
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Reaction of Water-Stable C60 Aggregates with Ozone
Environmental Science & Technology, 2007While the reactivity of C60 has been described in a variety of organic solvents, little information is available regarding aqueous-based reactions due to solubility limitations. In this study, a reaction between C60, as a nanoscale suspension, and dissolved ozone in the aqueous phase was investigated.
John D, Fortner +7 more
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Distribution of water-stable aggregates and aggregating agents in Cerrado Oxisols
Geoderma, 1999Abstract The effects of structural changes on Cerrado Oxisols in Brazil after land-use change are still insufficiently studied. Therefore, topsoil samples of loamy and clayey Cerrado Oxisols under crop, pasture and reforestation were fractionated using a wet-sieving procedure to obtain the distribution of water-stable aggregates and compared to ...
Henry Neufeldt +3 more
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A new approach to determining water stable aggregation
Communications in Soil Science and Plant Analysis, 1997Abstract A new method is introduced to measure water stability of soil aggregates. The wrist‐action shaker is a simple, inexpensive tool that provides highly accurate data for the assessment of soil erodibility. Three soils from Hawaii (two Oxisols and one Vertisol) with different mineralogies, management histories, and potassium (K)‐factors were ...
R. A. Sutherland, A. D. Ziegler
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Organic matter-induced changes in water-stable aggregation
Cereal Research Communications, 2007University of Pannonia, Georgikon Faculty of Agriculture, Department of Crop Production and Soil Sciences, Keszthely, Hungary Introduction The most important function of soil is that it is the basic media of crop production (Varallyay, 2002). Consequently, sustaining and ameliorating of soil structure is crucial.
Huisz, Andrea +4 more
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Recently Deposited Organic Matter in Soil Water‐Stable Aggregates
Soil Science Society of America Journal, 1996Abstract Some suggest that young labile soil organic matter accumulates preferentially in water‐stable macroaggregates (>250 µm) where it acts as a transient binding agent. We determined the proportions of recently deposited C (<15 yr) in water‐stable aggregate size fractions using 13
D. A. Angers, M. Giroux
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Moisture, Pressure, and Formation of Water‐Stable Soil Aggregates
Soil Science Society of America Journal, 1962Abstract Moisture and pressure treatments were applied to soil samples consisting of particles of 0 to 0.5 mm. diameter obtained by grinding 2 to 8 mm. aggregates of a Webster silty clay loam collected at the field moisture capacity and then air dried.
A. S. Rogowski, Don Kirkham
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Particle size, water-stable aggregates, and bacterial populations in lake sediments
Canadian Journal of Microbiology, 1971Sediments from 10 lakes for which bacterial counts were available were submitted to particle size analysis (Coulter Counter), both before and after removal of organic material. While these sediments were not so highly aggregated as soils, they contained water-stable aggregates and differed from one another in this characteristic. The counter failed to
D, Tsernoglou, E H, Anthony
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Luminescence of stable stacking aggregates of adenine and uracil in water
Biophysics, 2012Luminescence and excitation spectra of the highly luminescent stacking dimers of adenine and uracil in water solutions are studied. By the luminescence excitation spectra method it is shown that the stacking aggregates of adenine and uracil are formed with participation of rare forms of monomer molecules: N7H tautomers of adenine and the uracil ...
V L, Rapoport +4 more
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Quantifying improvements in water‐stable aggregation caused by corn stover retention
Soil Science Society of America Journal, 2021Abstract Corn ( Zea mays L.) stover harvest must be balanced against protecting soil properties, including water‐stable aggregates (WSA). The formation and maintenance of WSA functions of multiple factors including management. Harvesting stover alters the mass of the residue
Abimbola Ojekanmi, Jane M. F. Johnson
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