Search Results - "Spokas, K. A"

Impacts of woodchip biochar additions on greenhouse gas production and sorption/degradation of two herbicides in a Minnesota soil by Spokas, K.A., Koskinen, W.C., Baker, J.M., Reicosky, D.C.

“…A potential abatement to increasing levels of carbon dioxide (CO 2) in the atmosphere is the use of pyrolysis to convert vegetative biomass into a more stable…”
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Soil Health, Crop Productivity, Microbial Transport, and Mine Spoil Response to Biochars by Novak, J. M., Ippolito, J. A., Lentz, R. D., Spokas, K. A., Bolster, C. H., Sistani, K., Trippe, K. M., Phillips, C. L., Johnson, M. G.

“…Biochars vary widely in pH, surface area, nutrient concentration, porosity, and metal binding capacity due to the assortment of feedstock materials and thermal…”
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Effects of biochars and hydrochars produced from lignocellulosic and animal manure on fertility of a Mollisol and Entisol by Novak, J. M, Spokas, K. A, Cantrell, K. B, Ro, K. S, Watts, D. W, Glaz, B, Busscher, W. J, Hunt, P. G

“…Biochar and hydrochars (HC) are emerging soil fertility amendments; however, their ability to improve fertility levels in soils possessing vastly different…”
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Crop residue decomposition in Minnesota biochar-amended plots by Weyers, S. L, Spokas, K. A

“…Impacts of biochar application at laboratory scales are routinely studied, but impacts of biochar application on decomposition of crop residues at field scales…”
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Phenolic acid sorption to biochars from mixtures of feedstock materials by Hall, K. E, Calderon, M. J, Spokas, K. A, Cox, L, Koskinen, W. C, Novak, J, Cantrell, K

“…In an effort to customize biochars for soil amendments, multiple feedstocks have been combined in various ratios prior to pyrolysis. The resulting variation in…”
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Predicting the impact of biochar additions on soil hydraulic properties by Lim, T.J., Spokas, K.A., Feyereisen, G., Novak, J.M.

“…•Biochar’s impact on soil’s saturated conductivity was examined.•The impact of biochar additions can be estimated from biochar’s particle size.•A model was…”
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Plant Macro- and Micronutrient Dynamics in a Biochar-Amended Wetland Muck by Novak, J. M., Sigua, G. C., Spokas, K. A., Busscher, W. J., Cantrell, K. B., Watts, D. W., Glaz, B., Hunt, P. G.

“…Biochar is an organic carbon (OC) and plant nutrient-rich substance that may be an ideal amendment for bolstering soil organic matter and nutrient contents…”
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Physical Disintegration of Biochar: An Overlooked Process by Spokas, K. A, Novak, J. M, Masiello, C. A, Johnson, M. G, Colosky, E. C, Ippolito, J. A, Trigo, C

“…Data collected from both artificially and field (naturally) weathered biochar suggest that a potentially significant pathway of biochar disappearance is…”
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Leachate water quality of soils amended with different swine manure-based amendments by Ro, K.S., Novak, J.M., Johnson, M.G., Szogi, A.A., Libra, J.A., Spokas, K.A., Bae, S.

“…•Swine manure based pyrochar, compost, and hydrochar improved soil fertility.•Pyrochar and compost amended soils released high concentrations of P and K.•Only…”
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Modeling landfill CH4 emissions: CALMIM international field validation, using CALMIM to simulate management strategies, current and future climate scenarios by Spokas KA, Bogner, J, Corcoran, M

“…The current IPCC landfill methane (CH4) methodology excludes critical process drivers now known to control emissions. These include site-specific (1)…”
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Temporal Variations in Greenhouse Gas Emissions at a Midlatitude Landfill by Bogner, J. E., Spokas, K. A., Burton, E. A.

“…A field study encompassing a parallel time series of CH4, N2O, and CO2 emissions measurements was completed by using static enclosure techniques at a…”
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Sorption and desorption of bicyclopyrone on soils by Spokas, K. A., Schneider, S. K., Gamiz, B., Hall, K. E., Chen, W.

“…Bicyclopyrone is an herbicide that is marketed for the control of herbicide‐resistant weeds. However, there is a lack of extensive data on its sorption and…”
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CO2 and N2O emissions in a soil chronosequence at a glacier retreat zone in Maritime Antarctica by Thomazini, A, Mendonca, E S, Teixeira, D B, Almeida, ICC, La Scala, N, Canellas, L P, Spokas, KA, Milori, DMBP, Turbay, CVG, Fernandes, RBA, Schaefer, CEGR

“…Studies of C cycle alterations are extremely important to identify changes due to climate change, especially in the polar ecosystem. The objectives of this…”
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Kinetics of Methane Oxidation in a Landfill Cover Soil:  Temporal Variations, a Whole-Landfill Oxidation Experiment, and Modeling of Net CH4 Emissions by Bogner, Jean E, Spokas, Kurt A, Burton, Elizabeth A

“…Rates and controlling variables for methanotrophic oxidation of methane at a northeastern Illinois landfill with pumped gas recovery were examined in a field…”
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A biochar selection method for remediating heavy metal contaminated mine tailings by Ippolito, J. A., Ducey, T. F., Spokas, K. A., Trippe, K. M., Johnson, M. G.

“…Approximately 390,000 abandoned mines across the US pose considerable, pervasive risks to human and environmental health; world-wide the problem is even…”
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Biomass or biochar – which is better at improving soil hydraulic properties? by Spokas, K.A., Weis, R., Feyereisen, G., Watts, D.W., Novak, J.M., Lim, T.J., Ippolito, J.A.

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Nitrogen Oxide and Methane Emissions under Varying Tillage and Fertilizer Management by Venterea, Rodney T., Burger, Martin, Spokas, Kurt A.

“…ABSTRACT Comprehensive assessment of the total greenhouse gas (GHG) budget of reduced tillage agricultural systems must consider emissions of nitrous oxide…”
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CO(2) and N(2)O emissions in a soil chronosequence at a glacier retreat zone in Maritime Antarctica by Thomazini, A, Mendonça, E S, Teixeira, D B, Almeida, I C C, La Scala, Jr, N, Canellas, L P, Spokas, K A, Milori, D M B P, Turbay, C V G, Fernandes, R B A, Schaefer, C E G R

“…Studies of C cycle alterations are extremely important to identify changes due to climate change, especially in the polar ecosystem. The objectives of this…”
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Challenges and opportunities for mitigating nitrous oxide emissions from fertllized cropping systems by Venterea, R T, Halvoraon, AD, Kitchen, N, Liebig, MA, Cavigelli, MA, Grosso, Del, Motavalli, P P, Nelson, KA, Spokas, KA, Singh, B P, Stewart, CE, Ranaivoson, A, Strock, J, Collins, H

“…Nitrous oxide (N sub(2)O) is often the largest single component of the greenhouse-gas budget of individual cropping systems, as well as for the US agricultural…”
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Kinetics of methane oxidation in a landfill cover soil: Temporal variations, a whole-landfill oxidation experiment, and modeling of net CH sub(4) emissions by Bogner, Jean E, Spokas, Kurt A, Burton, Elizabeth A

“…Rates and controlling variables for methanotrophic oxidation of methane at a Northeastern Illinois landfill with pumped gas recovery were examined in a field…”
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