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| Registros recuperados: 81 | |
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| Blecker, S.W.; Stillings, L.L.; Decrappeo, N.M.; Ippolito, J.A.. |
| Soils developed on relict hydrothermally altered soils throughout the Western United States present unique opportunities to study the role of geology on above and belowground biotic activity and composition. Soil and vegetation samples were taken at three unaltered andesite and three hydrothermally altered (acid-sulfate) sites located in and around Lassen Volcanoes National Park in northeastern California. In addition, three different types of disturbed areas (clearcut, thinned, pipeline) were sampled in acid-sulfate altered sites. Soils were sampled (0 to 15 centimeters) in mid-summer 2010 from both under-canopy and between-canopy areas within each of the sites. Soils were analyzed for numerous physical and chemical properties along with soil enzyme... |
| Tipo: Article |
Palavras-chave: Soil. |
| Ano: 2014 |
URL: http://eprints.nwisrl.ars.usda.gov/1575/1/1531.pdf |
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| Ducey, Tom; Ippolito, J.A.; Cantrell, K.B.; Novak, J.M.; Lentz, R.D.. |
| It has been demonstrated that soil amended with biochar, designed specifically for use as a soil conditioner, results in changes to the microbial populations that reside therein. These changes have been reflected in studies measuring variations in microbial activity, biomass, and community structure. Despite these studies, very few experiments have been performed examining microbial genes involved in nutrient cycling processes. Given the paucity of research in this area, we designed a six-month study in a Portneuf soil (coarse-silty, mixed, superactive, mesic Durinodic Xeric Haplocalcid) treated with three levels (1%, 2%, and 10% w/w ratio) of a biochar pyrolyzed from switchgrass (Panicum virgatum) at 350°C and steam activated at 800°C to measure the... |
| Tipo: Article |
Palavras-chave: Amendments; Chemistry; Nitrogen; Soil. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1517/1/1481.pdf |
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| Moore, Amber; Hines, Steve; Brown, B.; Falen, Christi; de Haro Marti, M.E.; Chahine, Mireille; Norell, Rick; Ippolito, J.A.; Parkinson, Stuart; Satterwhite , Megan. |
| Growers working with manured soils o� en rely on soil test information when developing nutrient management for their crop, especially when manure application information is unavailable. Nutrient-enriched soils, like manured soils, can trigger nutrient de� ciencies and toxicities due to plant–soil nutrient interactions. � e goal of the study was to determine correlations between soil test and plant tissue nutrient concentrations for irrigated corn silage crops (Zea mays L. subsp. mays) with varying nutrient concentrations unique to dairy manure-enriched calcareous soils. Whole plant and soil samples were collected from 39 cooperator corn silage � elds at harvest over a 2-yr period throughout the Snake River Plain region of southern Idaho. Soils were... |
| Tipo: Article |
Palavras-chave: Application guidelines; Calcareous soil; Phosphorous. |
| Ano: 2014 |
URL: http://eprints.nwisrl.ars.usda.gov/1514/1/1478.pdf |
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| Ippolito, J.A.; Ducey, Tom; Cantrell, K.B.; Novak, J.M.; Lentz, R.D.. |
| An acidic (pH 5.8) biochar was created using a low pyrolysis temperature (350 degrees celsius) and steam activation to potentially improve the soil physicochemical status of an eroded calcareous soil. Biochar was added at 0, 1, 2, and 10 percent (by weight) to an eroded Portneuf soil (coarse-silty, mixed, superactive, mesic Durinodic Xeric Haplocalcid) and destructively sampled at 1, 2, 3, 4, 5, and 6 month intervals. Soil was analyzed for volumetric water content, pH, nitrate-nitrogen, ammonium-nitrogen, plant-available iron, zinc, manganese, copper, and phosphorus, organic carbon, carbon dioxide respiration, and microbial enumeration via extractable DNA and 16S rRNA gene copies. Soil water content increased with biochar application regardless of rate;... |
| Tipo: Article |
Palavras-chave: Calcareous soil; Chemistry; Soil. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1598/1/1556.pdf |
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| Ippolito, J.A.; Barbarick, K.A.; Elliot, H.A.. |
| Coagulants such as alum, [Al2(SO4)3X14H2O], ferric chloride [FeCl3], or ferric sulfate [Fe2(SO4)3] are commonly used to remove particulate and dissolved constituents from water supplies in the production of drinking water. The resulting waste product, called water-treatment residuals (WTR), contains precipitated Al and Fe oxyhydroxides resulting in a strong affinity for anionic species. Recent research has focused on using WTR as cost-effective materials to reduce soluble phosphorus (P) in soils, runoff, and land-applied organic wastes (manures and biosolids). Studies show P adsorption by WTR to be fast and nearly irreversible, suggesting long-term stable immobilization of WTR-bound P. Because excessive WTR application can induce P deficiency in crops,... |
| Tipo: Article |
Palavras-chave: Amendments; Soil; Water management. |
| Ano: 2011 |
URL: http://eprints.nwisrl.ars.usda.gov/1407/1/1377.pdf |
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| Massey, M.S.; Davis, J; Ippolito, J.A.; Sheffield, R.E.. |
| Magnesium phosphates such as struvite (MgNH4PO4x6H2O) can be recovered from municipal, industrial and agricultural wastewaters. However, minimal research has been conducted on the beneficial reuse of these recovered products; conducted research has focused on low pH soils. This study determined whether recovered struvite and dittmarite (MgNH4PO4xH2O) were effective P fertilizers in alkaline soils. In addition to commercially available triple superphosphate (TSP) and certified organic rock phosphate (RP), recovered struvite, dittmarite, and a heterogeneous recovered phosphate were evaluated in a laboratory dissolution study and as fertilizers for spring wheat (Triticum aestivum L.) in a greenhouse study. Struvite and dittmarite were much more soluble... |
| Tipo: Article |
Palavras-chave: Chemistry; Fertility; Soil quality; Water. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1576/1/1532.pdf |
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| Blecker, S.W.; STILLINGS, L.L.; AMACHER, M.C.; Ippolito, J.A.; DECRAOPPEO, N.M.. |
| Soil quality indices provide a means of distilling large amounts of data into a single metric that evaluates the soil’s ability to carry out key ecosystem functions. Primarily developed in agroecosytems, then forested ecosystems, we set out to develop and apply an index using the relation between soil organic matter and key soil abiotic and biotic properties in more semi-arid of the Western US arid systems impacted by different geologic mineralization types. We studied these relations in three different mineralization types: serpentine, acid sulfate and Cu/Mo porphyry systems at four different sites in California and Nevada. Soil samples were collected from undisturbed soils in both mineralized and nearby unmineralized terrane as well as waste rock and... |
| Tipo: Article |
Palavras-chave: Nitrogen; Soil. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1489/1/1453.pdf |
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| Ippolito, J.A.; Spackman, R.; Entry, J.A.; Sojka, R.E.. |
| Phosphorus-containing sediment entering surface water may degrade water quality and promote eutrophication. Grass is sometimes planted as a vegetated filter strip buffer along vulnerable receiving water to trap sediment and reduce the severity of phosphorus nutrient loading. However, eutrophication is still a problem in some waterways due to dissolved phosphorus leaching from senesced vegetation in grassed areas, independent of trapped sediment. A rainfall simulator (96 mm/h) was used to study the vegetative conditions under which losses of total dissolved phosphorus and filterable reactive phosphorus leaching are likely. Boxes containing a Portneuf silt loam soil (Xeric Haplocalcid) were planted with annual ryegrass (Lolium perenne) and cut at two... |
| Tipo: Article |
Palavras-chave: Runoff losses; Phosphorous. |
| Ano: 2014 |
URL: http://eprints.nwisrl.ars.usda.gov/1545/1/1503.pdf |
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| Miguel, Roberto E.; Ippolito, J.A.; Noriega, Roxana B; Dungan, R.S.. |
| As part of the casting process, foundries create sand molds and cores to produce ferrous and non-ferrous metal castings. After the process, a portion of the sand is discarded and becomes waste foundry sand (WFS). The aim of this study was to quantify metals (i.e. Ag, Ba, Cd, Cr, Cu, Ni, Pb, and Zn) in leaching extracts from a variety of waste molding and core sands from ferrous and non-ferrous foundries using the Extraction Procedure, Toxicity Characteristic Leaching Procedure, and ASTM water extraction procedure. The WFS metal extract concentrations were compared to those found in virgin silica sands and Argentinean and U.S. hazardous waste laws to determine if the WFSs met toxicity limits. The majority of the WFS extracts analyzed, regardless of metal... |
| Tipo: Article |
Palavras-chave: Amendments; Soil quality; Water quality. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1479/1/1444.pdf |
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| Freeman, C.L.; Ippolito, J.A.; Stromberger, M.E.; Barbarack, K.A.; Redente, E.F.. |
| This study was conducted to determine the effect of biosolids and lime on reclamation of a heavily contaminated metal site. Within the Superfund area near Leadville, CO, biosolids and lime were amended (1998) to a 1 ha site at rates of 240 Mg per ha each. In 2006, soil samples were collected on a 10 m x 10 m grid to a depth of 30 cm across the site. Basic soil analysis included pH, EC, total C and N, inorganic and organic C, and NO3-N and NH4-N. A sequential fractionation for metal contaminants of concern (Cd, Cr, Fe, Pb, Mn, and Zn) identified associations with: 1) soluble/exchangeable; 2) specifically sorbed/weakly bound; 3) non-crystalline Fe/Mn oxides; 4) crystalline Fe/Mn oxides and organically complexed; 5) residual organic; and 6) residual... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Soil. |
| Ano: 2008 |
URL: http://eprints.nwisrl.ars.usda.gov/1433/1/1346.pdf |
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| Ippolito, J.A.; Ducey, Tom; Tarkalson, D.D.. |
| Sequestering carbon in soils may be one method to reduce the concentration of carbon dioxide in the atmosphere. We measured inorganic and organic carbon, bacterial biomass and structural community diversity in southern Idaho soils having long term land use histories that supported native sagebrush vegetation (NSB), irrigated moldboard plowed crops (IMP), irrigated conservation (chisel) tilled crops (ICT) and irrigated pasture systems (IP). Organic carbon in soil decreased in the order IP>ICT>NSB>IMP. We use our findings to estimate the organic carbon, potentially sequestered if the use of irrigated agriculture were increased. We also use our findings to estimate inorganic and total carbon, potentially sequestered if the use of irrigated... |
| Tipo: Article |
Palavras-chave: Corn / maize; Amendments. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1406/1/1376.pdf |
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| Ippolito, J.A.; Stromberger, M.E.; Lentz, R.D.; Dungan, R.S.. |
| Biochar may improve nutrient retention when applied to soils, so co-applying biochar with manure may be synergistically beneficial to soils. In a laboratory incubation study, dairy manure (2% by weight) and a hardwood-based, fast pyrolysis biochar was applied (0, 1, 2, and 10% by weight) to a calcareous soil. Destructive sampling occurred at 1, 2, 3, 4, 5, 6 and 12 months, and monitored for changes in soil chemistry, water content, microbial respiration, bacterial populations, and microbial community structure. Increasing biochar application rate improved the soil water content, which may be beneficial in limited irrigation or rainfall areas. Biochar application increased soil organic carbon content and plant-available iron and manganese, while a... |
| Tipo: Article |
Palavras-chave: Soil. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1596/1/1554.pdf |
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| Lentz, R.D.; Ippolito, J.A.; Spokas, K.A.. |
| Amending soil with biochar may be a means of sequestering atmospheric CO2 and improving soil quality, but few multiyear field studies have examined the impacts of a one-time biochar application in an irrigated, calcareous soil. We fall-applied four treatments: dairy manure (18.7 tons/ac dry wt.); hardwood-derived biochar (10 tons/ac dry wt.); combined biochar and manure; and no amendments (control). We measured net N-mineralization using buried soil bags and soil greenhouse gas emissions (CO2, CH4, and N2O) from late spring to fall, corn silage yields, and crop N uptake each year. The influence of biochar and manure on silage yield changed with time after application in fall 2008. Biochar increased corn yields slightly (5%) in 2009, decreased yields by 14%... |
| Tipo: Article |
Palavras-chave: Agricultural Soils; Manure Management; Calcareous soil; Soil quality; Soil. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1584/1/1540.pdf |
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| Ippolito, J.A.. |
| Dairies utilize copper sulfate (CuSO4) foot baths to control hoof infections. Typical solutions are 5 or 10% CuSO4 (pH ~6), equal to 12,500 or 25,000 ppm Cu, respectively. When spent, hoof bath solutions are usually disposed of in waste lagoons and subsequently utilized for irrigation. In the Magic Valley, this practice appears to be causing soil Cu concentrations to increase. The goal of our research was to use local waste products to sequester Cu from a simulated hoof bath solution and to use waste products to adsorb excessive Cu from Cu-affected soils. We utilized lime waste and fly ash from the Amalgamated Sugar Company, LLC (Twin Falls, ID) to identify Cu sorption maximum as a function of pH. In triplicate, solutions... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Animal. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1382/1/1349.pdf |
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| Ippolito, J.A.; Lentz, R.D.; Novak M, J; Spokas, K.A.; Collins, H.P.; Streubel, J. |
| Soil fertility benefits of charcoal application have been reported as early as 1847 indicating that plant nutrients are sorbed within charcoal pores. The use of biomass-derived black carbon or biochar, the solid byproduct from the pyrolysis processing of any organic feedstock, has garnered recent attention as a potential vehicle for carbon sequestration and a beneficial soil conditioner. However, most of the past biochar research has focused on improving the physico-chemical properties of tropical (i.e. terra preta) and highly weathered soils, while little research has focused on improving arid or semi-arid soils of the USA. Here, we present an overview of the potential benefits and drawbacks of biochar usage in western US agro-ecosystems based on... |
| Tipo: Article |
Palavras-chave: Soil quality; Nutrients. |
| Ano: 2011 |
URL: http://eprints.nwisrl.ars.usda.gov/1522/1/1484.pdf |
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| Ippolito, J.A.; Grob, J; Donnelly, A. |
| Biochar land application research in elevated rainfall areas (980 millimeters of annual rainfall) of the U.S. Pacific Northwest is lacking. A proof-of-concept field study examined the effects of spruce-pine-fir wood chip biochar (slow pyrolysis; 450-500 degrees Celsius; 35 megagrams per hectare), dairy manure compost (105 megagrams per hectare), compost + biochar (35 and 105 megagrams per hectare, respectively), and a control (no biochar or compost) on glacially altered soil (sandy or loamy skeletal, isotonic, mesic humic or aquic Dystroxerepts) chemical properties and growth characteristics of vetch and sweet corn over a growing season. In-season liming (5.4 megagrams per hectare) occurred to raise the soil pH for adequate crop growth. Biochar, alone... |
| Tipo: Article |
Palavras-chave: Chemistry; Manure; Research methodology; Fertility. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1595/1/1553.pdf |
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| Registros recuperados: 81 | |
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