Results 171 to 180 of about 4,675 (205)
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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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Persistence of Subsoil Compaction in a Mollisol
Soil Science Society of America Journal, 1976Abstract Persistence of subsoil compaction was tested in Nicollet clay loam (a Mollisol) in southwestern Minnesota. Plots were either not packed or packed in 1960 in the bottom of each plow furrow using about 7.5 bars pressure, and were cropped to corn ( Zea mays L.) and ...
G. R. Blake +2 more
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Fate of Benfuracarb Insecticide in Mollisols and Brinjal Crop
Bulletin of Environmental Contamination and Toxicology, 2009The fate of benfuracarb was studied under field conditions in brinjal fruits and soil following foliar spray application at 0.25 and 0.50 microg g(-1) by HPLC. At 0.25 microg g(-1), benfuracarb persisted up to 7 days both in soil and brinjal but at 0.50 microg g(-1), benfuracarb residues persisted up to 10 and 12 days in soil and brinjal fruits ...
Raju, Chandra +2 more
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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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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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Potassium Dynamics in Western Uruguayan Agricultural Mollisols
Communications in Soil Science and Plant Analysis, 2017Knowledge of soil potassium (K) dynamics and quantification of plant-available K reserves are essential for the correct management of this nutrient.
Agustín Núñez, Alejandro Morón
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Mollisols properties and changes in Ukraine and China
Chinese Geographical Science, 2011Soils are the foundation of civilizations and the basis for human food production. Mollisols in Ukraine and Northeast China are two out of the four major Mollisol regions in the world. The natural areas from which Mollisols developed are the prairies and steppes that experience temperate and freezing conditions. This review paper introduces the general
Yuri S. Kravchenko +4 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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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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Lead-organic matter interactions in a mollisol
Soil Biology and Biochemistry, 1979Abstract Samples from the surface layer (0–15 cm) of a cultivated Typic Haplaquoll, collected in the fall of 1975 from field plots amended with variable amounts of Pb in the spring of 1969 and with ground corn cobs in 1973 and 1974 (22.4 tons ha−1), were analyzed for organic N, total Pb, exchangeable- and soluble-Pb, specifically-adsorbed Pb, and ...
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