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Conservation management of croplands at the plot scale has demonstrated a great potential to mitigate the greenhouse effect through sequestration of atmospheric carbon (C) into soil. This study estimated the potential of soil to sequester C through the conversion of croplands from conventional tillage (CT) to no-till (NT) in the East Central United States between 1992 and 2012. This study used the baseline soil organic C (SOC) pool (SOCP) inventory and the empirical models that describe the relationships of the SOCP under CT and NT, respectively, to their baseline SOCP in the upper 30-cm depth of soil. The baseline SOCP were obtained from the State Soil Geographic database, and the cropland distribution map was...
Categories: Publication; Types: Citation; Tags: Soil Science
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Four methods for measuring quantities of 12 plant-available nutrients were compared using three sandy soils in a series of three experiments. Three of the methods use different ion-exchange resin forms-bags, capsules, and membranes-and the fourth was conventional chemical extraction. The first experiment compared nutrient extraction data from a medium of sand saturated with a nutrient solution. The second and third experiments used Nakai and Sheppard series soils from Canyonlands National Park, which are relatively high in soil carbonates. The second experiment compared nutrient extraction data provided by the four methods from soils equilibrated at two temperatures, "warm" and "cold." The third experiment extracted...
Categories: Publication; Types: Citation, Journal Citation; Tags: Soil Science
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Humic substances (HS) form molecular aggregates in solution and on mineral surfaces. Elucidation of the mechanism of formation of these aggregates is important for an understanding of the interactions of HS in soils arid natural waters. The HS are formed mainly by enzymatic depolymerization and oxidation of plant biopolymers. These reactions transform the aromatic and lipid plant components into amphiphilic molecules, that is, molecules that consist of separate hydrophobic (nonpolar) and hydrophilic (polar) parts. The nonpolar parts of the molecules are composed of relatively unaltered segments of plant polymers and the polar parts of carboxylic acid groups. These amphiphiles form membrane-like aggregates on mineral...
Categories: Publication; Types: Citation; Tags: Soil Science
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A 1936 New Jersey Agricultural Experiment Station Bulletin provided an early quantitative assessment of atmospheric deposition of sulfur for the United States that has been compared in this study with more recent assessments. In the early 20th century, anthropogenic sulfur additions from the atmosphere to the soil by the combustion of fossil fuels were viewed as part of the requisite nutrient supply of crops. Jacob G. Lipman, the founding editor of Soil Science, and his team at Rutgers University, made an inventory of such additions to soils of the conterminous United States during the economic depression of the 1930s as part of a federally funded project looking at nutrient balances in soils. Lipman's team gathered...
Categories: Publication; Types: Citation; Tags: Soil Science
The “Biophysical assessment for indemnity selection of federal lands in Colorado: Soil salinity using electrical conductance” dataset includes information on soil salinity for 89 Indemnity Units, comprising 339 parcels of federal lands. These lands, currently managed by the Bureau of Land Management (BLM), are under consideration for transfer of ownership to the State of Colorado in compensation for federal lands not available for transfer at the time of statehood. The Indemnity Units total 23,130 acres of surface and mineral estate and 6,150 acres of mineral estate only. The specific land parcels to be transferred to the State will be finalized after an environmental analysis is completed, as required by the National...
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Dissolution of strongly magnetic minerals is a common and relatively rapid phenomenon in poorly drained soils of the central United States, resulting in low magnetic susceptibility (MS). Low Eh reducing conditions are primarily responsible for magnetic mineral dissolution; a process likely mediated by iron-reducing bacteria in the presence of soil organic matter. Based on transects across drainage sequences from nine sites, natural magnetic minerals (>5 ??m) extracted from surface soil consist of 54% ?? 18% magnetite, 21% ?? 11% titanomagnetite, and 17% ?? 14% ilmenite. Magnetite and titanomagnetite dissolution, assessed by scanning electron microscopy on a 0-to-3 scale, inversely correlates with surface soil MS...
Categories: Publication; Types: Citation; Tags: Soil Science
This dataset contains measurements of chemical concentrations of soil samples representing 28 headwater drainage basins completely within the Adirondack Park of New York State (ADK Park), one basin partially in the ADK Park, and one watershed 2 kilometers from the ADK Park boundary. Seven of these watersheds have been sampled 2 or 3 times over periods of 12 to 22 years. Soil samples were collected from pit faces exposed by shoveling. Total mass of organic matter, carbon and nitrogen in the forest floor are also presented for 16 headwater drainage basins in the ADK Park. Forest floor mass data were determined from samples collected with soil corers. The presented data are organized by six projects: the Adirondack...
Categories: Data, Data Release - Revised; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Adirondack Park, Adirondack Park, New York, Ambient Monitoring, B horizon, B horizon, All tags...
The hypotheses that weeds increase soil nutrient availability and differentially alter soil nutrient dynamics were tested in the greenhouse by comparing and contrasting plant-soil relationships among Bromus tectorum L. (cheatgrass, downy brome), Lepidium latifolium L. (perennial pep-perweed, tall whitetop), and Centaurea solstitialis L. (yellow starthistle). These species are highly invasive and produce dense stands that reduce or eliminate native species. A high resource (HR) soil and a low resource (LR) soil were evaluated. To simulate declining soil resources, individual plants were grown in the same pots, harvested, then replanted for a total of three growth cycles. Aboveground mass was greatest in the HR soil...
Categories: Publication; Types: Citation, Journal Citation; Tags: Soil Science
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Four methods for measuring quantities of 12 plant-available nutrients were compared using three sandy soils in a series of three experiments. Three of the methods use different ion-exchange resin forms—bags, capsules, and membranes—and the fourth was conventional chemical extraction. The first experiment compared nutrient extraction data from a medium of sand saturated with a nutrient solution. The second and third experiments used Nakai and Sheppard series soils from Canyonlands National Park, which are relatively high in soil carbonates. The second experiment compared nutrient extraction data provided by the four methods from soils equilibrated at two temperatures, “warm” and “cold.” The third experiment extracted...
Categories: Publication; Types: Citation; Tags: Soil Science
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A soil column study was conducted to assess the movement of Zn in sewage-sludge-amended soils. Varables investigated were soil properties, irrigation water quality, and soil moisture level. Bulk samples of the surface layer of six soil series were packed into columns, 10.2 cm in diameter and 110 cm in length. An anaerobically digested municipal sewage sludge was incorporated into the top 20 cm of each column at a rate of 300 mg ha-1. The columns were maintained at moisture levels of saturation and unsaturation and were leached with two waters of different quality. At the termination of leaching, the columns were cut open and the soil was sectioned and analyzed. Zinc movement was evaluated by mass balance accounting...
Categories: Publication; Types: Citation; Tags: Soil Science
Four methods for measuring quantities of 12 plant-available nutrients were compared using three sandy soils in a series of three experiments. Three of the methods use different ion-exchange resin forms-bags, capsules, and membranes-and the fourth was conventional chemical extraction. The first experiment compared nutrient extraction data from a medium of sand saturated with a nutrient solution. The second and third experiments used Nakai and Sheppard series soils from Canyonlands National Park, which are relatively high in soil carbonates. The second experiment compared nutrient extraction data provided by the four methods from soils equilibrated at two temperatures, "warm" and "cold." The third experiment extracted...
Categories: Publication; Types: Citation, Journal Citation; Tags: Soil Science
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Soil gas methane and combustible gas concentrations collected from oil and gas well pad locations in Utah. Soil gas samples were measured on site and/or collected for later analysis as described in supporting documentation. Multiple sample locations around well head and depths within the soil profile are available for select sites. Supporting documents provide information of sample collection protocol and data quality assurance.
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Big Flat, Big Indian North, Big Indian South, Big Valley, Bluebell, All tags...
In regions subject to strong winds, considerable amounts of soil are transported off land and deposited to nearby fields and surface water. This study investigated the nutrient supply from deposition of erodible-sized soil to surrounding soil and surface water in a controlled laboratory setting. Wind-erodible fraction (WEF) aggregates were collected from a field with no manure or fertilizer application (Treatment WEF0) and a field that had received 180 Mg ha-1 year-1 of cattle manure (WEF180) for 30 years. The WEF aggregates were applied to a loamy sand soil and to distilled water at rates equivalent to 0, 10, 50, 100, and 150 Mg ha-1 and incubated for 2 years. Deposition of carbon and nutrient-enriched WEF aggregates...
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This dataset contains measurements of chemical concentrations of forest soil samples and associated site measurements collected in the Adirondack Ecoregion of New York State. Data are presented in four groups (tabs) in an Microsoft EXCEL 2013 spreadsheet (and comma-delimited CSV files): (1) Adirondack Sugar Maple Project (ASM), (2) Buck Creek North Watershed, (3) Buck Creek South Watershed, and (4) Western Adirondack Stream Survey (WASS) soil sampling. The ASM data were all collected in 2009 and the WASS data were all collected in 2004. The Buck Creek North Tributary Watershed was sampled in 1997 and repeated at the same plot locations in 2009/10. The Buck Creek South Tributary Watershed was sampled in 1998 and...
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The movement of dissolved organic carbon (DOC) through boreal ecosystems has drawn increased attention because of its potential impact on the feedback of OC stocks to global environmental change in this region. Few models of boreal DOC exist. Here we present a one-dimensional model with simultaneous production, decomposition, sorption/desorption, and transport of DOC to describe the behavior of DOC in the OC layers above the mineral soils. The field-observed concentration profiles of DOC in two moderately well-drained black spruce forest sites (one with permafrost and one without permafrost), coupled with hourly measured soil temperature and moisture, were used to inversely estimate the unknown parameters associated...
Categories: Publication; Types: Citation; Tags: Soil Science
Atriplex confertifolia (Torr, Frem.) Wats. seedlings were grown in soil irrigated with different salt levels. Maximum yields were obtained with a 50 me/liter NaCl treatment. Higher salt levels produced large, succulent leaves showing symptoms of nitrogen deficiency. Physiological effects of salt were noted as decreased chlorophyll, soluble protein, and nitrate and loss of nitrate reductase activity. Salt also reduced the uptake of Mg, K, and P. Net carbon assimilation rates were reduced presumably from salt-induced increases in respiration. Leaf water potential was decreased greatly by the salt levels, but transpiration levels at leaf temperature of 20[degrees]C did not correspond in that they were quite insensitive...
Categories: Publication; Types: Citation, Journal Citation; Tags: Soil Science


map background search result map search result map Comparison of Methods for Nutrient Measurement in Calcareous Soils: Ion-Exchange Resin Bag, Capsule, Membrane, and Chemical Extractions Adirondack New York soil chemistry data, 1997-2014 Soil Methane and Combustible Gas Concentrations from Oil-Gas Well Pads in Utah, U.S.A. Adirondack New York soil chemistry data, 1992-2017 (ver. 1.1, December 2020) Comparison of Methods for Nutrient Measurement in Calcareous Soils: Ion-Exchange Resin Bag, Capsule, Membrane, and Chemical Extractions Adirondack New York soil chemistry data, 1997-2014 Adirondack New York soil chemistry data, 1992-2017 (ver. 1.1, December 2020) Soil Methane and Combustible Gas Concentrations from Oil-Gas Well Pads in Utah, U.S.A.