Results 161 to 170 of about 1,605 (201)
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Kinetics of sorption‐desorption of benfuracarb insecticide in mollisols
Pest Management Science, 2010AbstractBACKGROUND: Sorption‐desorption processes govern the movement of pesticides in soil. These processes determine the potential hazard of the pesticide in a given environment for groundwater contamination and need to be investigated.RESULTS: In the present study, sorption‐desorption processes of benfuracarb were investigated using a batch method ...
Anjana, Srivastava +2 more
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Catena, 2016 Land degradation threatens soil fertility as well as environmental security. To assess the extent of degradation of black Mollisols in northeast China, chemical and microbial indicators of soil quality were determined after long-term application of ...
Lu-Jun Li, Xiao-Zeng Han
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Physical properties of a Mollisol, an Oxisol and an Inceptisol
Soil and Tillage Research, 1990Abstract An Inceptisol (Andept) from Ecuador, an OOxisol (Ustox) from Columbia and a Mollisol (Udoll) from the U.S.A. were studied. The clay in the Andept was >85% amorphous with allophane being predominant. The Ustox contained sesqui-oxides of iron and aluminum and kaolinite, while the Udoll contained hydrous mica, quartz and kaolinite in the clay ...
W.E. Larson, W.A. Padilla
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Fractionation of Phosphorus in a Mollisol Amended with Biosolids
Soil Science Society of America Journal, 1999Information about soil P fractions is useful to predict the bioavailability of P in soil as well as to predict the likelihood of its transport. In this study, we used a sequential fractionation procedure to investigate the forms of P in a Mollisol amended at the soil surface with biosolids (i.e., anaerobically digested sewage ...
Yaobing Sui +2 more
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Geoderma Regional, 2019 Our objective was to determine how biophysical drivers impact on C sequestration and dynamics in Mollisols and Oxisols under grassland of South-America.
Gonzalo Berhongaray, Roberto Alvarez
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1983
Publisher Summary Mollisols are mineral soils that have a mollic epipedon (dark-colored surface horizon with greater than 50 % base saturation as determined by the ammonium-acetate method) or have a surface horizon that after mixing to a depth of 18 cm meets all requirements for a mollic epipedon except thickness. It also has an upper subhorizon that
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Publisher Summary Mollisols are mineral soils that have a mollic epipedon (dark-colored surface horizon with greater than 50 % base saturation as determined by the ammonium-acetate method) or have a surface horizon that after mixing to a depth of 18 cm meets all requirements for a mollic epipedon except thickness. It also has an upper subhorizon that
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Hydric Soil Indicators in Mollisol Landscapes
2000Mollisols are mineral soils that usually develop under prairie vegetation. They are characterized by relatively thick, dark surface horizons resulting from an increased organic matter content, which can present problems for hydric soil identification due to the lack of visible iron-based redoximorphic features (Chapters 7 and 8) in the upper part of ...
James Thompson, Jay Bell
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Long‐Term Changes in Mollisol Organic Carbon and Nitrogen
Journal of Environmental Quality, 2009Conversions of Mollisols from prairie to cropland and subsequent changes in crop production practices in the Midwestern USA have resulted in changes in soil organic matter. Few studies have used archived samples, long‐term resampling of soils to a depth of 1 m, and space for time studies to document these changes. We resampled soils by depth (0–100 cm)
Mark B, David +3 more
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Soluble Organic Carbon in a Biosolids‐Amended Mollisol
Journal of Environmental Quality, 1999AbstractOrganic matter can be mobilized from many sources and transported in soil by precipitation, snowmelt, and water table fluctuations. Knowledge of the potential fluxes of soluble organic C in different kinds of soil is essential to improve global C budgets.
Nizhou Han, Michael L. Thompson
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Soil Characteristics Involved in Phosphorus Sorption in Mollisols
Soil Science Society of America Journal, 2016Core Ideas Predictive models of phosphorus sorption were developed for a group of Mollisols. Al
Cabello Carasso, Maria Julia +3 more
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