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| Registros recuperados: 81 | |
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| Tarkalson, D.D.; Ippolito, J.A.. |
| Development of best management practices can help improve inorganic nitrogen (N) availability to plants and reduce nitrate-nitrogen (NO3-N) leaching in soils. This study was conducted to determine the influence of the zeolite mineral clinoptilolite (CL) additions on NO3-N and ammonium-nitrogen (NH4-N) in two common Pacific Northwest soils. The effects of CL application rate (up to 26.9 Mg ha-1) either band applied or mixed with a set rate of N fertilizer on masses of NO3-N and NH4-N in leachate and soil were investigated in a column study using a Portneuf silt loam (coarse-silty mixed mesic Durixerollic Caliciorthid) and a Wolverine sand (Mixed, frigid Xeric Torripsamment). All treatments for each soil received a uniform application of N from urea... |
| Tipo: Article |
Palavras-chave: Amendments; Nitrogen; Soil. |
| Ano: 2011 |
URL: http://eprints.nwisrl.ars.usda.gov/1436/1/1403..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. |
| Tipo: Technical Bulletin |
Palavras-chave: Animal; Chemistry. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1365/1/1342.pdf |
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| Ippolito, J.A.. |
| Aluminum-based water treatment residuals (Al-WTR) have a strong affinity to sorb phosphorus. In a proof-of-concept greenhouse column study, Al-WTR was surface-applied at 0, 62, 124, and 248 Mg/ha to 15 cm of soil on top of 46 cm of sand; Al-WTR rates were estimated to capture 0, 10, 20, and 40 years of phosphorus from an urban watershed entering an engineered wetland in Boise, Idaho, USA. Creeping red fescue (Festuca rubra) was established in all columns; one set of columns received no Al-WTR or plants. After plant establishment, once per week over a 12-week period, ~1.0 pore volumes of ~0.20 mg phosphorus/L was added to each column. Infiltration rates were measured, leachate was collected and analyzed for soluble phosphorus, and fescue yield,... |
| Tipo: Article |
Palavras-chave: Chemistry; Water management; Water quality. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1605/1/1563.pdf |
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| Ippolito, J.A.; Levine, Jonah; Williams, Morgan. |
| One major issue related to climate change is the potential to improve soil water relations in light of changes in future precipitation patterns or reductions in water availability in drier portions of the world (such as the western US). It appears that biochar may play a positive role, but that role may be soil texture related. We performed a study with a sandy (Wolverine sand from Shelley, ID), silty (Portneuf silt loam from Kimberly, ID), and clay loam soil (Danville clay loam from a subsurface horizon, from near Oakland, CA) that received either 5 or 10% by volume of lodgepole biochar in either chipped (0.25-0.63”) or fine (0-0.25”) form; a control (no biochar) was also included. Soil-biochar treatments were evenly mixed and placed into containers,... |
| Tipo: Article |
Palavras-chave: Soil water (soil moisture); Soil. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1610/1/1567.pdf |
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| Moore, Amber; Hines, Steve; Brown, B.; de Haro Marti, Mario; Falen, Christi; Chahine, Mireille; Fife, Tianna; Norell, Rick; Ippolito, J.A.. |
| Corn silage is the predominant crop in Idaho used for recovering phosphorus (P) that has accumulated in soils from dairy manure applications. However, little is known about how much P and other nutrients are being recov- ered under Idaho conditions. The objective of the study is to estimate P removal by irrigated corn silage crops cultivated throughout southern Idaho with variable soil test P concentrations, and to identify effects of increasing soil test P on tissue concentrations of P and on plant P uptake. Forty-two different corn silage fields in 2008 and 2009 were selected throughout southern Idaho for soil and whole plant sampling at harvest. Soils were ana- lyzed for Olsen P, plant tissue was measured for total P content,... |
| Tipo: Technical Bulletin |
Palavras-chave: Corn / maize. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1364/1/1341.pdf |
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| Barbarack, K.A.; Ippolito, J.A.. |
| Biosolids Beneficial Use Programs frequently involve multiple applications at agronomic rates, with plant-nutrient availability changing as elements react with soil constituents over time. Consequently, can regression equations reasonably estimate plant availability of Zn, P, Fe, and Cu, where multiple applications of Littleton and Englewood, Colorado Wastewater Treatment Plant biosolids are applied to a dryland wheat (Triticum aestivum L.)-fallow agroecosystem? Before each growing season, we added Littleton and Englewood biosolids at rates of 0 to 11.2 dry Mg ha?1 to plots arranged in randomized complete blocks with four replications per treatment. Soil samples collected after each wheat harvest were analyzed using an NH4HCO3-diethylenetriaminepentaacetic... |
| Tipo: Article |
Palavras-chave: Manure; Fertilizer; Soil quality. |
| Ano: 2008 |
URL: http://eprints.nwisrl.ars.usda.gov/1269/1/1245.pdf |
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| Ippolito, J.A.; Laird, D.A.; Busscher, W.J.. |
| Understanding and improving environmental quality by reducing soil nutrient leaching losses, reducing bioavailability of environmental contaminants, sequestering C, reducing greenhouse gas emissions, and enhancing crop productivity in highly weathered or degraded soils, has been the goal of agroecosystem researchers and producers for years. Biochar, produced by pyrolysis of biomass, may help attain these goals. The desire to advance understanding of the environmental and agronomic implication of biochar utilization led to the organization of the 2010 ASA-CSSA-SSSA Environmental Quality Division session entitled Biochar Effects on the Environment and Agricultural Productivity (Long Beach, CA; Oct. 31-Nov. 3). Twenty-five presentations from this session,... |
| Tipo: Article |
Palavras-chave: Soil. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1464/1/1429.pdf |
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| Novak, J.M.; Ippolito, J.A.; Lentz, R.D.; Spokas, K.A.; Bolster, C.H.; Sistani, K.R.; Trippe, K.M.; Phillips, C.L.; Johnson, M.G.. |
| Biochar is being evaluated by scientists from the United States Department of Agriculture (USDA) Agricultural Research Service (ARS) for its potential to sequester soil C, to improve soil health, and to increase crop yields. ARS scientists from multiple locations such as Florence, SC, Kimberly, ID, Bowling Green, KY, Corvallis, OR, and St. Paul, MN, are conducting investigations with agronomic experiments at the laboratory, greenhouse, and field plot scales. To further expand biochars utility, ARS scientists have collaborated with United States Environmental Protection Agency (US EPA) investigators to reclaim mine-impacted soils. In the agronomic investigations, both positive and negative aspects of biochar application were revealed. In some experiments,... |
| Tipo: Article |
Palavras-chave: Fertility; Soil quality; Soil. |
| Ano: 2016 |
URL: http://eprints.nwisrl.ars.usda.gov/1621/1/1578.pdf |
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| Massey, M.S.; Ippolito, J.A.; Davis, J.G.; Sheffield, R.E.. |
| Phosphorus (P) recovery and re-use will become increasingly important for water quality protection and sustainable nutrient cycling as environmental regulations become stricter and global P reserves decline. The objective of this study was to examine and characterize several magnesium phosphates recovered from actual wastewater under field conditions. Three types of particles were examined including crystalline magnesium ammonium phosphate hexahydrate (struvite) recovered from dairy wastewater, crystalline magnesium ammonium phosphate hydrate (dittmarite) recovered from a food processing facility, and a heterogeneous product also recovered from dairy wastewater. The particles were analyzed using ‘‘wet” chemical techniques, powder X-ray diffraction... |
| Tipo: Article |
Palavras-chave: Manure; Animal; Chemistry. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1338/1/1315.pdf |
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| Ippolito, J.A.; Tarkalson, D.D.; Lehrsch, G.A.. |
| Adoption of new management techniques which improve soil water storage and soil nitrogen plant availability yet limit nitrogen leaching may help improve environmental quality. A benchtop study was conducted to determine the influence of a single urea fertilizer rate (224 kilograms of Nitrogen per hectare) applied with band or fully-mixed zeolite (Clinoptilolite) application rates (up to 90 megagrams per hectare) on ammonium-nitrogen and nitrate-nitrogen concentrations in a Portneuf silt loam. Two additional greenhouse experiments were carried out to test the soil moisture status and corn growth in a Wolverine sand. Mixing urea fertilizer into silt loam soil resulted in greater urea mineralization, but the mixed zeolite was more effective at adsorbing... |
| Tipo: Article |
Palavras-chave: Corn / maize; Amendments; Nitrogen. |
| Ano: 2011 |
URL: http://eprints.nwisrl.ars.usda.gov/1416/1/1386.pdf |
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| Tarkalson, D.D.; Ippolito, J.A.. |
| Development of best management practices can help improve inorganic nitrogen (N) availability to plants and reduce nitrate-nitrogen (NO3-N) leaching in soils. This study was conducted to determined the influence of the zeolite mineral Clinoptilolite (CL) additions on NO3-N and ammonium-nitrogen (NH4-N) in the soil/leachate system of two common Pacific Northwest soils (Portneuf silt loam and Wolverine sand). |
| Tipo: Article |
Palavras-chave: Soil; Chemistry. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1336/1/1313.pdf |
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| Barbarick, K.A.; Ippolito, J.A.; McDaniel, J.P.. |
| Understanding N dynamics in biosolids-amended agroecosystems can help avoid over-application and the potential for environmental degradation. We investigated 15-years of biosolids application to dryland-wheat, questioning what is the relationship between cumulative grain yield and N uptake (N removal) and biosolids or N fertilizer rates and how many times biosolids or N fertilizer are applied? How are wheat-grain production and N uptake intertwined with residual soil nitrate-N? We found that biosolids or N fertilizer rates plus the number of applications of each material produced planar-regression (3-dimensional) models with 15-years of grain yield and N uptake data (all R2 > 0.93). To evaluate how yield or N uptake impacted residual soil nitrate-N, we... |
| Tipo: Article |
Palavras-chave: Dryland crops; Small grain; Nitrogen; Soil quality. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1404/1/1374.pdf |
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| Ippolito, J.A.; Nelson, N.O.. |
| Irrigation laterals transport irrigation return flow, including water, sediment, and dissolved nutrients, such as phosphorus (P), back to surface water bodies. Phosphorus transformations during transport can affect both P bioavailability and the best management practices selected to minimize P inputs to waters of the United States. The objective of this study was to determine P retention in three irrigation laterals. Soluble reactive P (SRP) concentrations in lateral waters were increased from 0.08 to 0.25 mg L -1 (0.08 to 0.25 ppm) by constantly injecting a phosphate (PO4) solution for 2.5 hours. Bromide (Br) was used as a conservative tracer to determine dilution effects. Water was sampled at 10-minute intervals, beginning 30... |
| Tipo: Article |
Palavras-chave: Drainage water (see Percolation water); Nutrients. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1513/1/1477.pdf |
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| Meiman, P.; Davis, N.R.; Brummer, J.; Ippolito, J.A.. |
| Fluvial mine tailing deposition has caused extensive riparian damage throughout the western United States. Willows are often used for fluvial mine tailing revegetation, but some species accumulate excessive metal concentrations which could be detrimental to browsers. In a greenhouse experiment, growth and metal accumulation of Geyer willow, Drummond’s willow, diamondleaf willow, Bebb willow, thinleaf alder, water birch, red-osier dogwood, and shrubby cinquefoil were evaluated for potential revegetation use. Bare-root shrubs were grown in tailings collected from three acidic, metal-contaminated (i.e. cadmium, copper, lead, and zinc) fluvial deposits near Leadville, Colorado, USA. Tailings were amended with only lime to raise the soil pH to 7, or with... |
| Tipo: Article |
Palavras-chave: Soil. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1451/1/1416.pdf |
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| Lentz, R.D.; Ippolito, J.A.. |
| When added to soils, carbon-rich biochar derived from the pyrolysis of woody materials can sequester atmospheric carbon dioxide, mitigate climate change, and potentially increase crop productivity. However, research is needed to confirm the suitability and sustainability of biochar application to different soils. We applied four treatments (dry wt.) to an irrigated calcareous soil in Nov. 2008: control; stockpiled dairy manure, 18.8 Mg/ha; hardwood-derived biochar, 22.4 Mg/ha; and manure + biochar using previous rates. Nitrogen fertilizer was applied when needed (based on pre-season soil test N and crop requirements) in all plots and years with N mineralized from added manure included in this determination. Available soil nutrients (NH4-N, NO3-N, Olsen... |
| Tipo: Article |
Palavras-chave: Corn / maize; Manure; Calcareous soil; Soil. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1459/1/1424.pdf |
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| Bjorneberg, D.L.; Leytem, A.B.; Ippolito, J.A.; Koehn, A.C.. |
| Watersheds utilizing surface water for irrigation often return a portion of the water to a water body. This irrigation return flow often includes sediment and nutrients that reduce the quality of the receiving water body. Research in the 82,000 ha Upper Snake Rock (USR) watershed from 2005 to 2008 showed that, on average, water diverted from the Snake River annually supplied 547 kg/ha of total suspended sediment (TSS), 1.1 kg/ha of total phosphorus (TP) and 0.50 kg/ha of dissolved phosphorus (DP) to the irrigation tract. Irrigation return flow from the USR watershed contributed 414 kg/ha of TSS, 0.71 kg/ha of TP and 0.32 kg/ha of DP back to the Snake River. Significantly more TP flowed into the watershed than returned to the Snake River while there was no... |
| Tipo: Article |
Palavras-chave: Irrigation control; Nutrients. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1586/1/1543.pdf |
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| Registros recuperados: 81 | |
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