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2021

Trippe, K. M.; Manning, V. A.; Reardon, C. L.; Klein, A. M.; Weidman, C.; Ducey, T. F.; Novak, J. M.; Watts, D. W.; Rushmiller, H.; Spokas, K. A.; Ippolito, J. A.; Johnson, M. G., 2021. Phytostabilization of acidic mine tailings with biochar, biosolids, lime, and locally-sourced microbial inoculum: Do amendment mixtures influence plant growth, tailing chemistry, and microbial composition? Applied Soil Ecology 2021, 165, 103962. https://doi.org/10.1016/j.apsoil.2021.103962

Gámiz, B., López‐Cabeza, R., Velarde, P., Spokas, K.A. and Cox, L. 2021, Biochar changes the bioavailability and bioefficacy of the allelochemical coumarin in agricultural soils. Pest Manag Sci, 77: 834-843. https://doi.org/10.1002/ps.6086

 

2020

Spokas, KA, Schneider, SK, Gamiz, B, Hall, KE, Chen, W. 2020. Sorption and desorption of bicyclopyrone on soils. Agric Environ Lett. 5:e20039. https://doi.org/10.1002/ael2.20039

Ippolito, J. A.; Cui, L.; Kammann, C.; Wrage-Mönnig, N.; Estavillo, J. M.; Fuertes-Mendizabal, T.; Cayuela, M. L.; Sigua, G.; Novak, J.; Spokas, K.; Borchard, N., Feedstock choice, pyrolysis temperature and type influence biochar characteristics: a comprehensive meta-data analysis review. Biochar 2020, 2 (4), 421-438.

Domingues, R.R., Sanchez-Monedero, M.A., Spokas, K.A., Melo, L.C., Trugilho, P.F., Valenciano, M.N., Silva, C.A. 2020. Enhancing cation exchange capacity of weathered soils using biochar: feedstock, pyrolysis conditions and addition rate. Agronomy. 10(6):824. https://doi.org/10.3390/agronomy10060824.

Ferraz-Almeida, R., Spokas, K.A., De Oliveira, R.C. 2020. Columns and detectors recommended in gas chromatography to measure greenhouse emission and O2 uptake in soil: A review. Communications in Soil Science and Plant Analysis. 51(5):582-594. https://doi.org/10.1080/00103624.2020.1729370.

Feyereisen, G. W., Spokas, K. A., Strock, J. S., Mulla, D. J., Ranaivoson, A.Z., Coulter, J.A. 2020. Nitrate removal and nitrous oxide production from upflow and downflow column woodchip bioreactors. Agric Environ Lett. 5:e20024. https://doi.org/10.1002/ael2.20024

 

2019

Fuertes-Mendizabal, T., Huerfano, X., Vega-Mas, I., Torralbo, F., Menendez, S., Ippolito, J.A., Kammann, C., Wrage-Monnig, N., Cayuela, M., Borchard, N., Spokas, K.A., Novak, J.M., Gonzalez-Moro, M., Gonzalez-Murua, C., Estavillo, J. 2019. Biochar reduces the efficiency of nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) mitigating N2O emissions. Nature Scientific Reports. 9(2346):1-16. https://doi.org/10.1038/s41598-019-38697-2.

Gamiz, B., Hall, K., Spokas, K.A., Cox, L. 2019. Understanding activation effects on low-temperature biochar for optimization of herbicide sorption. Agronomy. 9(10):588. https://doi.org/10.3390/agronomy9100588.

Gamiz, B., Velarde, P., Spokas, K.A., Celis, R., Cox, L. 2019. Changes in sorption and bioavailability of herbicides in soil amended with fresh and aged biochar. Geoderma. 337:341-349. https://doi.org/10.1016/j.geoderma.2018.09.033.

Gamiz, B., Velarde, P., Spokas, K.A., Cox, L. 2019. Dynamic effect of fresh and aged biochar on the behavior of the herbicide mesotrione in soils. Journal of Agricultural and Food Chemistry. 67(34):9450-9459. https://doi.org/10.1021/acs.jafc.9b02618.

Jilling, A., Kane, D., Williams, A., Yannarell, A., Davis, A., Jordan, N., Koide, R., Mortensen, D., Snapp, S., Smith, R., Spokas, K.A., Grandy, S. 2019. Rapid and distinct responses of particulate and mineral-associated organic nitrogen to conservation tillage and cover crops. Geoderma. 359:114001. https://doi.org/10.1016/j.geoderma.2019.114001. 

Meschewski, E., Holm, N., Sharma, B., Spokas, K.A., Minalt, N., Kelly, J. 2019. Biochar additions across Illinois agricultural soils: Greenhouse gas production, corn growth, and soil microbial responses. Chemosphere. 228:565-576. https://doi.org/10.1016/j.chemosphere.2019.04.031.

Sigua, G.C., Novak, J.M., Watts, D.W., Ippolito, J.A., Ducey, T.F., Johnson, M.G., Spokas, K.A. 2019. Phytostabilization of Zn and Cd in mine soil using corn in combination with manure-based biochar and compost. Environments. 6(6):69. https://doi.org/10.3390/environments6060069.

Wilson, P., Streich, J., Murray, K., Eichten, S., Cheng, R., Aitkin, N., Spokas, K.A., Warthmann, N., Gordon, S., Vogel, J., Borevitz, J. 2019. Global diversity of the brachypodium species complex as a resource for genome-wide association studies demonstrated for agronomic traits in response to climate. Genetics. 211(1):317-331. https://doi.org/10.1534/genetics.118.301589.

 

2018

Almeida, R.F., De Bortoli Teixeira, D., Montanari, R., Bolonhezi, A.C., Teixeira, E.B., Moitinho, M.R., Panosso, A.R., Spokas, K.A., La Scala Junior, N. 2018. Ratio of CO2 and O2 as index for categorizing soil biological activity in sugarcane areas under contrasting straw management regimes. Soil Research. 56(4):373–381. https://doi.org/10.1071/SR16344.              

Borchard, N., Schirrmann, M., Cayuela, M.L., Kammann, C., Wrange-Monnig, N., Estavillo, J., Fuertes-Mendizabal, T., Sigua, G.C., Spokas, K.A., Ippolito, J., Novak, J.M. 2018. Biochar, soil and land-use interactions that reduce nitrate leaching and N2O emissions: A meta-analysis. Science of the Total Environment. 651:2354-2364. https://doi.org/10.1016/j.scitotenv.2018.10.060.   

Fidel, R.B., Laird, D.A., Spokas, K.A. 2018. Sorption of ammonium and nitrate to biochars is electrostatic and pH-dependent. Nature Scientific Reports. 8(1):1-10. https://doi.org/10.1038/s41598-018-35534-w. [PDF]

Hagerman, N., Spokas, K.A., Schmidt, H., Kagi, R., Bohler, M., Bucheli, T.D. 2018. Activated carbon, biochar and charcoal: Linkages and synergies across pyrogenic carbon's ABC. Water. 10(2):182. https://doi.org/10.3390/w10020182.

Joseph, S., Kammann, C.I., Shepard, J.G., Conte, P., Schmidt, H., Hagemann, N., Rich, A.M., Spokas, K.A., Marjo, C.E., Allan, J., Munroe, P., Mitchell, D.R., Donne, S., Graber, E.R. 2018. Microstructural and associated chemical changes during the composting of a high temperature biochar: Mechanisms for nitrate, phosphate and other nutrient retention and release. Science of the Total Environment. 618:1210-1223. https://doi.org/10.1016/j.scitotenv.2017.09.200.

Novak, J.M., Ippolito, J.A., Ducey, T.F., Watts, D.W., Spokas, K.A., Trippe, K.M., Sigua, G.C., Johnson, M.G. 2018. Remediation of an acidic mine spoil: Miscanthus biochar and lime amendment affects metal availability, plant growth and soil enzymatic activity. Chemosphere. 205:709-718. https://doi.org/10.1016/j.chemosphere.2018.04.107.

Novak, J.M., Spokas, K.A., Johnson, M.G. 2018. Concentration and release of phosphorus and potassium from lignocellulosic and manure-based biochars from fertilizer reuse. Frontiers in Sustainable Food Systems. https://doi.org/10.3389/fsufs.2018.00054.

Roser, M., Feyereisen, G.W., Spokas, K.A., Mulla, D.J., Strock, J.S., Gutknecht, J. 2018. Carbon dosing increases nitrate removal rates in denitrifying bioreactors at low temperature high-flow conditions. Journal of Environmental Quality. 47(4):856-864. https://doi.org/10.2134/jeq2018.02.0082.

Tavares, R., Spokas, K.A., Hall, K., Colosky, E., De Souza, Z., La Scala, N. 2018. Sugarcane residue management impact soil greenhouse gas. Ciência e Agrotecnologia. 42(2):195-203. http://dx.doi.org/10.1590/1413-70542018422019817 

Trippe, K.M., Phillips, C.L., Spokas, K.A., Miles, T. 2018. Creating a biochar roadmap: The future of biochar research at the USDA Agricultural Research Service. CSA News. 63:24-25. https://doi.org/10.2134/csa2018.63.1021. 

             

2017

Bicalho, E.S., Moitinho, M.R., Teixeira, D.B., Panosso, A.R., Spokas, K.A., La Scala Jr, N. 2017. Soil greenhouse gas production: Relations to soil attributes in a sugarcane production area, southern Brazil. Soil Science Society of America Journal. https://doi.org/10.2136/sssaj2016.12.0422.

Cambaliza, M.O.L., Bogner, J.E., Green, R.B., Shepson, P.B., Harvey, T.A., Spokas, K.A, Stirm, B.H., Corcoran, M.. 2017. Field measurements and modeling to resolve m2 to km2 CH4 emissions for a complex urban source: An Indiana landfill study. Elementa: Science of the Anthropocene. 5:36. http://doi.org/10.1525/elementa.145

Gamiz, B., Cox, L., Hermosin, M., Spokas, K.A., Celis, R. 2017. Assessing the effect of organoclays and biochar on the fate of abscisic acid in soil. Journal of Agricultural and Food Chemistry. 65(1):29-38. https://doi.org/10.1021/acs.jafc.6b03668.

Gamiz, B., Velardea, P., Spokas, K.A., Hermosin, M., Cox, L. 2017. Biochar soil additions impacts herbicide fate: Importance of application timing and feedstock species. Journal of Agricultural and Food Chemistry. 65(15):3109-3117. https://doi.org/10.1021/acs.jafc.7b00458

Hall, K., Spokas, K.A., Gamizn, B., Cox, L., Papiernik, S.K., Koskinen, W.C. 2017. Glyphosate sorption/desorption on biochars – Interactions of physical and chemical processes. Pest Management Science. https://doi.org/10.1002/ps.4530

Kammann, C., Ippolito, J., Hagemann, N., Borchard, N., Cayuela, M., Estavillo, J., Fuertes-Mendizabal, T., Jeffery, S., Kern, J., Novak, J.M., Rasse, D., Saarnio, S., Schmidt, H., Spokas, K.A., Wrage-Monnig, N. 2017. Biochar as a tool to reduce the agricultural greenhouse-gas burden-knowns, unknowns, and future research needs. Journal of Environmental Engineering and Landscape Management. 25(02):114-139. https://doi.org/10.3846/16486897.2017.1319375

Lim, T., Spokas, K.A., Feyereisen, G.W., Weis, R.D., Koskinen, W. 2017. Influence of biochar particle size and shape on soil hydraulic properties. Journal of Environmental Science and Engineering. 5(1):8-15. Available at: http://savvysciencepublisher.com/downloads/jesetv5n1a2/

Mehmood, K., Chavez Garcia, E., Schirrmann, M., Ladd, B., Kammann, C., Wrage-Monnig, N., Siebe, C., Estavillo, J.M., Fuertes-Mendizabal, T., Cayuela, M., Sigua, G.C., Spokas, K.A., Cowie, A.L., Novak, J.M., Ippolito, J.A., Borchard, N. 2017. Global biochar research activities and their relation to socio-economic development and environmental quality. Agronomy for Sustainable Development. https://doi.org/10.1007/s13593-017-0430-1.

Mendes, K.F., Hall, K.E., Spokas, K.A., Koskinen, W.C., Tornisielo, V.L. 2017. Evaluating agricultural management effects on alachlor availability: Tillage, green manure, and biochar. Agronomy. 7(4):64. https://doi.org/10.3390/agronomy7040064.

Novak, J.M., Moore, E., Spokas, K.A., Hall, K., Williams, A. 2018. Future biochar research directions. In: Ok, Y.S., Tsang, D.C., Bolan, N., Novak, J.M., editors. Biochar from Biomass and Waste. 1st edition, New York, NY: Academic Press. p. 423-432. https://doi.org/10.1016/B978-0-12-811729-3.00022-4

Spokas, K.A., Marques, J., La Scala, N., Nater, E. 2017. Black Earths (Terra Preta): Observations of wider occurrence from natural fire. Encyclopedia of Soil Science. 3:2312–2315.

Williams, A., Davis, A.S., Jilling, A., Grandy, A., Koide, R.T., Smith, R.G., Snapp, S.S., Spokas, K.A., Yannarell, A.C., Jordan, N.R. 2017. Reconciling opposing soil processes in row-crop agroecosystems via soil functional zone management. Journal of Applied Ecology. 236:99-107. https://doi.org/10.1016/j.agee.2016.11.012

 

2016

Laird, D.A., Novak, J.M., Collins, H.P., Ippolito, J.A., Karlen, D.L., Lentz, R.D., Sistani, K.R., Spokas, K.A., Van Pelt, R.S. 2016. Multi-year and multi-location soil quality and crop biomass yield responses to hardwood fast pyrolysis biochar. Geoderma. 289: 46-53. https://doi.org/10.1016/j.geoderma.2016.11.025

Lim, T., Spokas, K.A., Feyereisen, G.W., Novak, J.M. 2016. Predicting the impact of biochar additions on soil hydraulic properties. Chemosphere. 142:136-144. https://doi.org/10.1016/j.chemosphere.2015.06.069

Mandal, S., Sakar, B., Bolan, N., Novak, J.M., Ok, Y., Van Zwieten, L., Bhupinder, P., Kirkham, M., Choppala, G., Spokas, K.A., Nadu. R. 2016. Designing advanced biochar products for maximizing greenhouse gas mitigation potential. Critical Reviews in Environmental Science and Technology. 46(17):1367-1401.  https://doi.org/10.1080/10643389.2016.1239975

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. 2016. Soil health, crop productivity, microbial transport, and mine spoil response to biochars. BioEnergy Research. 9(2):454-464. https://doi.org/10.1007/s12155-016-9720-8

Novak, J.M., Ro, K.S., Ok, Y.S., Sigua, G.C., Spokas, K.A., Uchimiva, S.M., Bolan, N. 2016. Biochars multifunctional role as a novel technology in the agricultural, environmental, and industrial sectors. Chemosphere. 142:1-3. https://doi.org/10.1016/j.chemosphere.2015.06.066

Novak, J.M., Sigua, G.C., Watts, D.W., Cantrell, K., Shumaker, P.D., Szogi, A.A., Johnson, M., Spokas, K.A. 2016. Biochars impact on water infiltration and water quality through a compacted subsoil layer. Chemosphere. 142:160-167. https://doi.org/10.1016/j.chemosphere.2015.06.038

Ro, K.S., Novak, J.M., Johnson, M., Szogi, A.A., Libra, J., Spokas, K.A., Bae, S. 2016. Leachate water quality of soils amended with different swine manure-based amendments. Chemosphere. 142:92-99. https://doi.org/10.1016/j.chemosphere.2015.05.023

Sigua, G.C., Novak, J.M., Watts, D.W., Johnson, M.G., Spokas, K.A. 2016. Efficacies of designer biochars in improving biomass and nutrient uptake of winter wheat grown in a hard setting subsoil layer. Chemosphere. 142:176-183. https://doi.org/10.1016/j.chemosphere.2015.06.015

Small, G.E., Brovold, S.A., Bullerjahn, G.S., Finlay, J.C., McKay, R.M., Rozmarynowycz, M.J., Spokas, K.A., Sterner, R.W. 2016. Large differences in potential denitrification and sediment microbial communities across the Laurentian great lakes. Biogeochemistry. 128(3):353-368. https://doi.org/10.1007/s10533-016-0212-x

Spokas, K.A., Watts, D.W., Lee, T., Weis, R.D., Novak, J.M., Feyereisen, G.W., Ippolito, J.A. 2016. Biomass or biochar – Which is better at improving hydraulic properties? Acta Horticulturae. 1146:235-242.https://doi.org/10.17660/ActaHortic.2016.1146.31

Trigo, C., Cox, L., Spokas, K.A. 2016. Influence of pyrolysis temperature and hardwood species on resulting biochar properties and their effect on azimsulfuron sorption as compared to other sorbents. Science of the Total Environment. 566-567:1454-1464. https://doi.org/10.1016/j.scitotenv.2016.06.027

Trigo, C., Spokas, K.A., Hall, K.E., Cox, L., Koskinen, W.C. 2016. Metolachlor sorption and degradation in soil amended with fresh and aged biochars. Journal of Agricultural and Food Chemistry. 64(16):3141-3149. https://doi.org/10.1021/acs.jafc.6b00246

Wang, Q., Gao, S., Wang, D., Spokas, K.A., Cao, A., Yan, D. 2016. The mechanisms for 1,3-dichloropropene dissipation in biochar-amended soils. Journal of Agricultural and Food Chemistry. 64(12):2531-2540. https://doi.org/10.1021/acs.jafc.5b04941

 Williams, A., Davis, A.S., Ewing, P., Forcella, F., Grandy, S., Kane, D., Koide, R.T., Mortensen, D., Smith, R., Spokas, K.A., Jordan, N.R. 2016. A comparison of soil hydrothermal properties in zonal and uniform tillage systems across the US corn belt. Geoderma. 273:12-19. https://doi.org/10.1016/j.geoderma.2016.03.010

Williams, A., Davis, A.S., Ewing, P., Grandy, A., Kane, D., Koide, R.T., Mortensen, D.A., Smith, R.G., Snapp, S., Spokas, K.A. 2016. Precision control of soil nitrogen cycling via soil functional zone management. Agriculture, Ecosystems & Environment. 231:291-295. https://doi.org/10.1016/j.agee.2016.07.010

Williams, A., Kane, D., Ewing, P., Atwood, L., Jilling, A., Li, M., Lou, Y., Davis, A.S., Grandy, A., Koide, R.T., Spokas, K.A., et. al, 2016. Soil functional zone management: A vehicle for enhancing production and soil ecosystem services in row-crop agroecosystems. Frontiers in Plant Science. 7:65. https://doi.org/10.3389/fpls.2016.00065

Xie, T., Sadasivam, B., Reddy, K.R., Wang, C., Spokas, K.A. 2015. Review of the effects of biochar amendment on soil properties and carbon sequestration. Journal of Hazardous, Toxic, and Radioactive Waste. https://doi.org/10.1061/(ASCE)HZ.2153-5515.0000293

Zheng, W., Holm, N., Spokas, K.A. 2016. Research and application of biochar in North America. In: Guo, M., He, Z. Uchimiya, S.M., editors. Agricultural and Environmental Applications of Biochar: Advances and Barriers. Madison, WI: Soil Science Society of America, Inc. p. 475-494. https://doi.org/10.2136/sssaspecpub63.2014.0053

 

2015

Cambaliza, M., Shepson, P.B., Bogner, J., Caulton, D.R., Stirm, R., Sweeney, C., Montzka, S.A., Turnbill, J., Spokas, K.A., Salmon, O.E., Lavoie, T.N., Hendricks, A., Mays, K., Turnbull, J., Miller, B.R., Lauvanux, T., Davis, K., Karion, A., Moser, B., Miller, C., Obermeyer, C., Whetstone, J., Prasad, K.R., Miles, N., Richardson, S. 2015. Quantification and source apportionment of the methane emission flux from the city of Indianapolis. Elementa: Science of the Anthropocene. 3:000037. https://doi.org/10.12952/journal.elementa.000037

Chintala, R., Owen, R.K., Schumacher, T. E., Spokas, K.A., McDonald, L.M., Kumar, S., Clay, D.E., Malo, D.D., Bleakley, B. 2015. Denitrification kinetics in biomass and biochar amended soils of different landscape positions. Environmental Science and Pollution Research. 22:5152-5163. https://doi.org/10.1007/s11356-014-3762-2

Garcia-Jaramillo, M., Cox, L., Knicker, H., Cornejo, J., Spokas, K.A., del Carmen-Hermosin, M. 2015.  Characterization and selection of biochar for an efficient retention of tricyclazole in a flooded alluvial paddy soil. Journal of Hazardous Materials. 286:581-588. https://doi.org/10.1016/j.jhazmat.2014.10.052

Hall, K.E., Ray, C., Ki, S., Spokas, K.A., Koskinen, W.C. 2015. Pesticide sorption and leaching potential on three Hawaiian soils. Journal of Environmental Management. 159:227-234. https://doi.org/10.1016/j.jenvman.2015.04.046

Jeffery, S., Abalos, D., Spokas, K.A., Verheijen, F. 2015. Biochar effects on crop yield. In: Lehmann, J., Joseph, S., editors. Biochar for Environmental Management: Science, Technology and Implementation. New York, NY: Taylor & Francis. p. 301-326.

Lentz, R.D., Ippolito, J.A., Spokas, K.A. 2015. The effects of biochar and manure in silage corn. Progressive Forage Grower. 16(2):26-29. Available at: https://www.progressiveforage.com/forage-types/silage/the-effects-of-biochar-and-manure-in-silage-corn 

Masiello, C., Dugan, B., Brewer, C., Spokas, K., Novak, J., Liu, Z., Sorrenti, G. (2015) Biochar effects on soil hydrology. In: Lehmann, J., Joseph, S., editors. Biochar for Environmental Management Science, Technology and Implementation. 2nd Edition. London, UK: Routledge. p.541-560.

Novak, J.M., Sigua, G.C., Spokas, K.A., Hunt, P.G., Glaz, B.S., Watts, D.W., Cantrell, K.B., Busscher, W.J. 2015. Plant macro- and micronutrient dynamics in a biochar-amended wetland muck. Water, Air, and Soil Pollution. 226:2228. https://doi.org/10.1007/s11270-014-2228-y

Ro, K.S., Novak, J.M., Johnson, M.G., Szogi, A.A., Libra, J.A., Spokas, K.A., Bae, S. 2015. Leachate water quality of soils amended with different swine manure-based amendments. Chemosphere. 142:92-99. https://doi.org/10.1016/j.chemosphere.2015.05.023.

Sigua, G.C., Novak, J.M., Watts, D.W., Johnson, M.G., Spokas, K.A. 2015. Efficacies of designer biochars in improving biomass and nutrient uptake of winter wheat grown in a hard setting subsoil layer. Chemosphere. 142:176-183. https://doi.org/10.1016/j.chemosphere.2015.06.015

Spokas, K.A., Bogner, J., Corcoran, M., Walker, S. 2015. From California dreaming to California data: Challenging historic models for landfill CH4 emissions. Elementa: Science of the Anthropocene. 3:51. http://doi.org/10.12952/journal.elementa.000051

Thomazini, A., Spokas K.A., Hall, K.E., Ippolito, J.A., Lentz, R.D., Novak, J.M. 2015. GHG impacts of biochar: Predictability for the same biochar. Agriculture, Ecosystems and Environment. 207:183-191. https://doi.org/10.1016/j.agee.2015.04.012 [PDF]

Thomazini, A., De Sa Mendonca, E., De Bortoli Teixeixa, D., Carreiro Almeida, C., La Scala, N., Spokas, K.A., Pasqualoto Canellas, L., Millori, D. 2015. CO2 and N2O emissions in a soil chronosequence at a glacier retreat zone in Maritime Antarctica. Science of the Total Environment. 521-522:336-345. https://doi.org/10.1016/j.scitotenv.2015.03.110

Van Zwieten, L., Kammann, C., Singh, B.P., Cayuela, M., Clough, T., Spokas, K.A., Kimber, S., Joseph, S. 2015. Biochar effects on gaseous losses of N2O and CH4. In: Biochar for Environmental Management: Science and Technology II. Routledge: Abingdon, UK, p. 489-520. [PDF]

Vozhdayev, G.V., Spokas, K.A., Molde, J.S., Heilmann, S.M., Wood, B.M., Valentas, K.J. 2015. Response of maize germination and growth to HTC filtrate type and concentration. Plant and Soil. 396(1-2):127-136. https://doi.org/10.1007/s11104-015-2577-3

Xie, T., Sadasivam, B., Reddy, K.R., Wang, C., Spokas, K.A. 2015. Review of the effects of biochar amendment on soil properties and carbon sequestration. Journal of Hazardous, Toxic, and Radioactive Waste. https://doi.org/10.1061/(ASCE)HZ.2153-5515.0000293.

Yargicoglu, E.N., Sadasivan, B., Reddy, K.R., Spokas, K.A., 2015. Physical and chemical characterization of waste wood derived biochars. Waste Management. 36:256-268. https://doi.org/10.1016/j.wasman.2014.10.029  

 

2014

Borchard, N., Spokas, K.A., Prost, K., Siemens, J. 2014. Greenhouse gas production in mixtures of soil with composted and noncomposted biochars is governed by char-associated organic compounds. Journal of Environmental Quality. 43:971-979. https://doi.org/10.2134/jeq2013.07.0290

Cabrera, A., Cox, L., Spokas, K.A., Hermosin, M.C., Cornejo, J., Koskinen, W.C. 2014. Influence of biochar amendments on the sorption-desorption of aminocyclopyrachlor, bentazone and pyraclostrobin pesticides to an agricultural soil. Science of the Total Environment. 470-471:438-443. https://doi.org/10.1016/j.scitotenv.2013.09.080

Hall, K.E., Calderon, M.J., Spokas, K.A., Cox, L., Koskinen, W.C., Novak, J.M., Cantrell, K.B. 2014. Phenolic acid sorption to biochars from mixtures of feedstock materials. Water, Air, and Soil Pollution. 225:1-9. https://doi.org/10.1007/s11270-014-2031-9

Heilmann, S.M., Molde, J.S., Timler, J.G., Wood, B.M., Mikula, A.L., Vozhdayev, G.V., Spokas, K.A., Colosky, E., Valentas, K.J. 2014. Phosphorus reclamation through hydrothermal carbonization of animal manures. Journal of Environmental Science and Technology. 48(17):10323-10329. https://doi.org/10.1021/es501872k

Lentz, R.D., Ippolito, J.A., Spokas, K.A. 2014. Biochar and manure effects on net nitrogen mineralization and greenhouse gas emissions from calcareous soil under corn. Soil Science Society of America Journal. 78:1641-1655. https://doi.org/10.2136/sssaj2014.05.0198

Li, Y., Cheng, R., Spokas, K.A., Palmer, A., Borevitz, J. 2014. Genetic variation for life history sensitivity to seasonal warming in Arabidopsis thaliana. Genetics. 196:569-577. https://doi.org/10.1534/genetics.113.157628

Lin, X., Spokas, K.A., Venterea, R.T., Zhang, R., Baker, J.M., Feyereisen, G.W. 2014. Assessing microbial contributions to N2O impacts following biochar additions. Agronomy. 4(4):478-496. https://doi.org/10.3390/agronomy4040478

Novak, J.M., Spokas, K.A., Cantrell, K.B., Ro, K.S., Watts, D.W., Glaz, B.S., Hunt, P.G., Busscher, W.J. 2014. Effects of biochars and hydrochars produced from lignocellulosic and animal manure on fertility of a Mollisol and Entisol. Soil Use and Management. 30:175-181. https://doi.org/10.1111/sum.12113

Rittenhouse, J.L., Rice, P.J., Spokas, K.A., Koskinen, W.C. 2014. Assessing biochar's ability to reduce bioavailability of aminocyclopyrachlor in soils. Environmental Pollution. 189:92-97. https://doi.org/10.1016/j.envpol.2014.02.022

Smith, R.G., Davis, A.S., Koide, R., Mortensen, D., Grandy, S., Hunter, M., Daly, A., Atwood, L., Jordan, N., Spokas, K.A., Yannarell, A. 2014. Structural equation modeling facilitates transdisciplinary research on agriculture and climate change. Crop Science. 54:475-483. https://doi.org/10.2135/cropsci2013.07.0474 [PDF]

Spokas, K.A., Novak, J.M., Masiello, C.A., Johnson, M., Colosky, E., Ippolito, J.A., Trigo, C. 2014. Physical disintegration of biochar: An overlooked process. Journal of Environmental Science and Technology. 1(8):326-332. https://doi.org/10.1021/ez500199t

Trigo, C., Spokas, K.A., Cox, L., Koskinen, W.C. 2014. Influence of soil biochar aging on sorption of the herbicides MCPA, nicosulfuron, terbuthylazine, indaziflam, and fluoroethyldiaminotriazine. Journal of Agricultural and Food Chemistry. 62(45):10855-10860. https://doi.org/10.1021/jf5034398

Weyers, S.L., Spokas K.A. 2014. Crop residue decomposition in Minnesota biochar-amended plots. Solid Earth. 5:499-507. https://doi.org/10.5194/se-5-499-2014

Xie, T., Reddy, K.R., Wang, C., Yargicoglu, E., Spokas, K.A., 2014. Characteristics and applications of biochar for enviroronmental remediation: A review. Critical Reviews in Environmental Science Technology. 45(9):939-969. https://doi.org/10.1080/10643389.2014.924180

 

2011-2013

Bogner, J., Spokas, K.A., Chanton, J. 2011. Seasonal greenhouse gas emissions (methane, carbon dioxide, nitrous oxide) from engineered landfills: Daily, intermediate, and final California cover soils. Journal of Environmental Quality. 40(3):1010-1020. https://doi.org/10.2134/jeq2010.0407

Cabrera, A., Cox, L., Spokas, K.A., Hermosin, C., Cornejo, J., Koskinen, W.C. 2011. Comparative sorption and leaching study of the herbicides fluometuron and MCPA in a soil amended with biochar and other sorbents. Journal of Agricultural and Food Chemistry. 59(23):12550-12560. https://doi.org/10.1021/jf202713q

Chanton, J., Abichou, T., Langford, C., Spokas, K.A., Hater, G., Goldsmith, D., Barlaz, M. 2011. Observations on the methane oxidation capacity of landfill soils. Waste Management. 31(5):914-925. https://doi.org/10.1016/j.wasman.2010.08.028

Fabbri, D., Rombola, A.G., Torri, C., Spokas, K.A. 2013. Determination of polycyclic aromatic hydrocarbons in biochar and biochar amended soil. Journal of Analytical & Applied Pyrolysis. 103(2013):60-67. https://doi.org/10.1016/j.jaap.2012.10.003

Fabbri, D., Torri, C., Spokas, K.A. 2012. Analytical pyrolysis of synthetic chars derived from biomass with potential agronomic application (biochar). Relationships with impacts on microbial carbon dioxide production. Journal of Analytical & Applied Pyrolysis. 93(1):77-84. https://doi.org/10.1016/j.jaap.2011.09.012

Gesch, R.W., Archer, D.W., Spokas, K.A. 2012. Can using polymer-coated seed reduce the risk of poor soybean emergence in no-tillage soil? Field Crops Research. 125:109-116. https://doi.org/10.1016/j.fcr.2011.09.005

Morris, J., Crest, M., Barlaz, M., Spokas, K.A., Akerman, A., Yuan, L. 2012. Improved methodology to assess modification and completion of landfill gas management in the aftercare period. Waste Management. 32(2012):2364-2373. https://doi.org/10.1016/j.wasman.2012.07.017

Spokas, K.A. 2012. Impact of biochar field aging on laboratory greenhouse gas production potentials. Global Change Biology Bioenergy. 5:165-176. https://doi.org/10.1111/gcbb.12005

Spokas, K.A., Bogner, J. 2011. Limits and dynamics of methane oxidation in landfill cover soils. Waste Management. 31(5):823-832. https://doi.org/10.1016/j.wasman.2009.12.018

Spokas, K.A., Bogner, J., Chanton, J. 2011. A process-based inventory model for landfill CH4 emissions inclusive of seasonal soil microclimate and CH4 oxidation. Journal of Geophysical Research-Biogeosciences. 116:1-19. https://doi.org/10.1029/2011JG001741

Spokas, K.A., Cantrell, K.B., Novak, J.M., Archer, D.W., Ippolito, J.A., Collins, H.P., Boateng, A.A., Lima, I.M., Lamb, M.C., Mcaloon, A.J., Lentz, R.D., Nichols, K.A. 2012. Biochar: A synthesis of its agronomic impact beyond carbon sequestration. Journal of Environmental Quality. 41(4):973-989. https://doi.org/10.2134/jeq2011.0069

Spokas, K.A., Novak, J.M., Stewart, C.E., Cantrell, K.B., Uchimiya, S.M., Dusaire, M.G., Ro, K.S. 2011. Qualitative analysis of volatile organic compounds on biochar. Chemosphere. 85(5):869-882. https://doi.org/10.1016/j.chemosphere.2011.06.108

Spokas, K.A., Novak, J.M., Venterea, R.T. 2012. Biochar’s role as an alternative N-fertilizer:Ammonia capture. Plant and Soil. 350(1):35-42. http://doi.org/10.1007/s11104-011-0930-8

Venterea, R.T., Halvorson, A.D., Kitchen, N.R., Liebig, M.A., Cavigelli, M.A., Del Grosso, S.J., Motavalli, P.P., Nelson, K.A., Spokas, K.A., Singh, B.P., Stewart, C.E., Ranaivoson, A., Strock, J., Collins, H.P. 2012. Challenges and opportunities for mitigating nitrous oxide emissions from fertilized cropping systems. Frontiers in Ecology and the Environment. 10(10)562-570. https://doi.org/10.1890/120062

Weyers, S.L., Spokas, K.A. 2011. Impact of biochar on earthworm populations: A review. Applied and Environmental Soil Science. https://doi.org/10.1155/2011/541592

 

2006-2010

 

Forcella, F., Spokas, K.A., Gesch, R.W., Isbell, T., Archer, D.W. 2007. Swathing and Windrowing as Harvest Aids for Cuphea. Agronomy Journal. 99: 415-418. https://doi.org/10.2134/agronj2006.0041

La Scala, Jr., N., Lopes, A., Spokas, K.A., Bolonhezi, D., Archer, D.W., Reicosky, D.C. 2008. Short-term temporal changes of soil carbon losses after tillage described by a first-order decay model. Soil & Tillage Research. 99:108-118. https://doi.org/10.1016/j.still.2008.01.006

La Scala, N., Lopes, A., Spokas, K.A., Archer, D.W., Reicosky, D.C. 2009. First-Order Decay Models to Describe Soil C-CO2 Loss After Rotary Tillage. Scientia Agricola. 66(5):650-657. https://doi.org/10.1590/S0103-90162009000500010 [PDF]

La Scala, N., Lopes, A., Spokas, K.A., Archer, D.W., Reicosky, D.C. 2009. Short-Term Temporal Changes of Bare Soil CO2 Fluxes Described by First-Order Decay Models. European Journal of Soil Science. 60(2):258-264. https://doi.org/10.1177/0734242X09339325

Lachnicht Weyers, S.L., Schomberg, H.H., Hendrix, P.F., Spokas, K.A., Endale, D.M. 2008. Construction of an electrical device for sampling earthworm populations in the field. Applied Engineering in Agriculture. 24(3):391-397. https://doi.org/10.13031/2013.24492

Martinson, K., Durgan, B., Forcella, F., Wiersma, J., Spokas, K.A., Archer, D.W. 2007. An Emergence Model for Wild Oat (Avena fatua). Weed Science. 55:584-591. https://doi.org/10.1614/WS-07-059.1 [PDF]                          .

Mcgiffin, M., Spokas, K.A., Forcella, F., Archer, D.W., Poppe, S., Figueroa, R. 2008. Emergence prediction of common groundsel (Senecio vulgaris). Weed Science. 56:58-65. https://doi.org/10.1614/WS-07-060.1

Sakaliene, O., Papiernik, S.K., Koskinen, W.C., Spokas, K.A. 2007. Sorption and predicted mobility of herbicides in Baltic soils. Journal of Environmental Science and Health Part B. 42:641-647. https://doi.org/10.1080/03601230701465601

Scheutz, C., Kjeldsen, P., Bogner, J.E., De Visscher, A., Gebert, J., Hilger, H.A., Huber-Humer, M., Spokas, K.A. 2009. Microbial Methane Oxidation Processes and Technologies for Mitigation of Landfill Gas Emissions. Waste Management and Research. 27(5):409-455. https://doi.org/10.1177/0734242X09339325

Schutte, B.J., Regnier, E.E., Harrison, S.K., Schmoll, J.T., Spokas, K.A., Forcella, F. 2008. A hydrothermal seedling emergence model for giant ragweed (Ambrosia trifida). Weed Science. 56:555-560. [PDF]

Spokas, K., Wang, D., Venterea, R.T., Sadowsky, M. 2006. Mechanisms of N2O production following chloropicrin fumigation. Applied Soil Ecology. 31:101-109. https://doi.org/10.1016/j.apsoil.2005.03.006

Spokas, K.A. 2010. Review of the stability of biochar in soils: predictability of O:C molar ratios. Carbon Management. 1(2):289-303. https://doi.org/10.4155/cmt.10.32 [Supplemental Table S1] [PDF]

Spokas, K.A., Baker, J.M., Reicosky, D. 2010. Ethylene: potential key for biochar amendment impacts. Plant and Soil Journal. 333:443-452. https://doi.org/10.1007/s11104-010-0359-5 [PDF]

Spokas, K.A., Bogner, J., Chanton, J.P., Morcet, M., Aran, C., Graff, C., Modeau-Le Golvan, Y., Haebe, I. 2006. Methane mass balance at three landfill sites: What is the efficiency of capture bygass collection systems? Waste Management. 26(5):516-525. https://doi.org/10.1016/j.wasman.2005.07.021

Spokas, K.A., Forcella, F. 2006. Estimating hourly incoming solar radiation from limited meteorological data.  Weed Science. 54:182-189. [PDF]

Spokas, K.A., Forcella, F. 2009. Software Tools for Weed Seed Germination Modeling. Weed Science. 57(2):216-227. https://doi.org/10.1614/WS-08-142.1  [PDF]

Spokas, K.A., Forcella, F., Archer, D.W., Reicosky, D.C. 2007. SeedChaser: Vertical Soil Tillage Distribution Model. Computers and Electronics in Agriculture. 57:62-73. https://doi.org/10.1016/j.compag.2007.01.014

Spokas, K.A., King, J., Wang, D., Papiernik, S.K. 2007. Effects of soil fumigants on methanotrophic activity. Atmospheric Environment. 41:8150-8162. https://doi.org/10.1016/j.atmosenv.2007.06.028 [PDF]

Spokas, K.A., Koskinen, W.C., Baker, J.M., Reicosky, D.C. 2009. Impacts of Woodchip biochar additions on greenhouse gas production and sorption/degradation of two herbicides in a Minnesota soil. Chemosphere. 77:574-581. https://doi.org/10.1016/j.chemosphere.2009.06.053

Spokas, K.A., Reicosky, D.C. 2009. Impacts of Sixteen Different Biochars on Soil Greenhouse Gas Production. Annals of Environmental Science. 3:179-193. [PDF]

Venterea, R.T., Baker, J.M., Dolan, M.S., Spokas, K.A. 2006. Carbon and nitrogen storage are greater under biennial tillage in a Minnesota corn-soybean rotation. Soil Science Society of America Journal. 70:1752-1762. https://doi.org/10.2136/sssaj2006.0010. [PDF]

Venterea, R.T., Spokas, K.A., Baker, J.M. 2009. Accuracy and Precision Analysis of Chamber-Based Nitrous Oxide Gas Flux Estimates. Soil Science Society of America Journal. 73(4):1087-1093. https://doi.org/10.2136/sssaj2008.0307

Wang, D., Fraedrich, S.W., Juzwik, J., Spokas, K., Zhang, Y., Koskinen, W.C. 2006. Fumigant concentration distribution in forest nursery soils under water seal and plastic film after application of dazomet, metam sodium, and chloropicrin. Pest Management Science. 62:263-273. https://doi.org/10.1002/ps.1164

 

2005 and Earlier

 

Bogner, J.E., Miller, R., Spokas, K.A. 1995. Measurement of microbial biomass and activity in landfill soils. Waste Management and Research. 13:137-147. https://doi.org/10.1016/S0734-242X(95)90115-9

Bogner, J.E., Spokas, K.A., Burton, E.A. 1997. Kinetics of methane oxidation in a landfill cover soil: Temporal variations, a whole landfill oxidation experiment, and modeling of net methane emissions. Environmental Science and Technology. 31(9):2504-2514. https://doi.org/10.1021/es960909a

Bogner, J.E., Spokas, K.A., Burton, E.A. 1999. Temporal variations in greenhouse gas emissions at a mid-latitude landfill. Journal of Environmental Quality. 28(1):278-288. https://doi.org/10.2134/jeq1999.00472425002800010034x

Bogner, J.E., Spokas, K.A., Burton, E.A., Sweeney, R., Corona, V. 1995. Landfills as atmospheric sources and sinks. Chemosphere. 31:4119-4130. https://doi.org/10.1016/0045-6535(95)80012-A

Spokas, K., Wang, D., Venterea, R.T. 2005. Greenhouse gas production and emission from a forest nursery soil: Effects of fumigation with chloropicrin and methyl isothiocyanate. Journal of Soil Biology and Biochemistry. 37:475-485. https://doi.org/10.1016/j.soilbio.2004.08.010

Spokas, K.A., Bogner, J.E. 1996. Field systems for continuous measurement of landfill gas pressures and temperatures. Waste Management & Research. 14(3):233-242. https://doi.org/10.1006/wmre.1996.0024

Spokas, K.A., Graff, C., Morcet, M., Aran, C. 2003. Geospacial analysis to calculate landfill emission rates from chamber measurements. Waste Management. 23(7):599-607. https://doi.org/10.1016/S0956-053X(03)00102-8

Spokas, K.A., Wang, D. 2003. Stimulation of nitrous oxide production resulted from soil fumigation with chloropicrin. Atmospheric Environment. 37:3501-3507. https://doi.org/10.1016/S1352-2310(03)00412-6

Venterea, R.T., Burger, M., Spokas, K.A. 2005. Nitrogen oxide and methane emissions under varying tillage and fertilizer management. Journal of Environmental Quality. 34:1467-1477. https://doi.org/10.2134/jeq2005.0018

Wang, D., Juzwik, J., Fraedrich, S.W., Spokas, K.A., Zhang, Y., Koskinen, W.C. 2005. Atmospheric emissions of methyl isothiocyanate and chloropicrin following soil fumigation and surface containment treatment in bare-root forest nurseries. Canadian Journal of Forest Research. 35(5):1202-1212. https://doi.org/10.1139/x05-044. [PDF]

Zhang, Y., Spokas, K.A., Wang, D. 2005. Degradation of methyl isothiocyanate and chloropicrin in forest nursery soils. Journal of Environmental Quality. 34:1566-1572. https://doi.org/10.2134/jeq2004.0374

 

Book Excerpts

Zheng, W., Holm, N., Spokas, K.A. 2016. Research and application of biochar in North America. In: Guo, M., He, Z. Uchimiya, S.M., editors. Agricultural and Environmental Applications of Biochar: Advances and Barriers. Madison, WI: Soil Science Society of America, Inc. p. 475-494.

Ippolito, J.A., Spokas, K.A., Novak, J.M., Lentz, R.D., Cantrell, K.B. 2015. Biochar elemental composition and factors influencing nutrient retention. In: Lehmann, J., Joseph, S., editors. Biochar for Environmental Management: Science, technology, and implementation. 2nd edition. New York, NY: Routledge. p. 137-161.

Van Zwieten, L., Kammann, C., Singh, B.P., Cayuela, M., Clough, T., Spokas, K.A., Kimber, S., Joseph, S. 2015. Biochar effects on gaseous losses of N2O and CH4. In: Biochar for Environmental Management: Science and Technology II. Routledge: Abingdon, UK, p. 489-520.

Masiello, C., Dugan, B., Brewer, C., Spokas, K., Novak, J., Liu, Z. & Sorrenti, G. 2015. Biochar effects on soil hydrology. In: Lehmann, J., Joseph, S. Biochar for Environmental Management Science, Technology and Implementation. 2nd Edition. London, UK: Routledge. p.541-560.

Jeffery, S., Abalos, D., Spokas, K.A., Verheijen, F. 2015. Biochar effects on crop yield. In: Lehmann, J., Joseph, S., editors. Biochar for Environmental Management: Science, Technology and Implementation. New York, NY: Taylor & Francis. p. 301-326.

Spokas, K.A., Novak, J.M. 2015. Biochar: The field experience. In: Goreau, T.J., Larson, R.W., Campe, J., editors. Innovative Methods of Soil Fertility Restoration, Carbon Sequestration, and Reversing CO2 Increase. Boca Raton, FL: CRC Press. p. 235-248.

He, Z., Mingxin, G., Lovanh, N., Spokas, K.A. 2012. Applied manure research—looking forward to the benign roles of animal manure in agriculture and the environment. In: He, Z., editor. Applied Research of Animal Manure: Challenges and Opportunities beyond the Adverse Environmental Concerns. New York, NY:Nova Science. p. 299-309.

Cabrera, Mesa, A., Spokas, K.A. 2011. Impacts of biochar (black carbon) additions on the sorption and efficacy of herbicides [abstract]. In: Kortekamp, A., editor. Herbicides and Environment. Rijeka, Croatia. InTech. p. 315-340.

Spokas, K.A. 2011. Stable Isotopes in Evaluation of Greenhouse Gas Emissions. In: Encyclopedia of Agrophysics. J. Glinski, J. Horabik, and J. Lipiec (Eds). Springer. Heidelberg, Germany. pp. 845-849.

Spokas, K.A. 2010. Production of Ethylene Following Soil Biochar Additions [abstract]. 2010 U.S. Biochar Initiative Conference.

Bogner, J., Spokas, K.A. 2009. Landfill Methane. In: Reay, D., Smith, P., and van Amstel, A. Methane and Climate Change. Earthscan Ltd., London, UK. pp. 175-200.

Johnson, J.M., Papiernik, S.K., Mikha, M.M., Spokas, K.A., Tomer, M.D., Weyers, S.L. 2009. Soil Processes and Residue Harvest Management. In: Lal, R., Stewart, B.A., editors. Soil Quality and Biofuel Production. Advances in Soil Science. Boca Raton, FL: CRC Press. p. 1-44. 

 

Editorials

 

Spokas, K.A. 2007. Plastics: Still young, but having a mature impact [Editorial]. Waste Management. 28(3):473-474.

Spokas, K.A. 2007. Methane: Signs of progress along the road [Editorial]. Waste Management. 27(4):459-460.

 

Popular Publications

Lentz, R.D., Ippolito, J.A., Spokas, K.A. 2015. Biochar and manure effects on nitrogen nutrition in silage corn. Nutrient Digest. 7(2):1,3-4.

Lentz, R.D., Ippolito, J.A., Spokas, K.A. 2015. The effects of biochar and manure in silage corn. Progressive Forage Grower. 16(2):26-29.

Spokas, K.A., Novak, J.M. 2013. Know your community - Biochar: agronomic and environmental uses community. CSA News. 58:25.

 

Proceedings

 

Spokas, K.A., Lim, T., Feyereisen, G.W., Novak, J.M. 2015. Predicting the impact of biochar additions on soil hydraulic properties [abstract]. Geophysical Research Abstracts. 17:EGU2015-6806.

Ippolito, J.A., Lentz, R.D., Novak, J.M., Spokas, K.A., Collins, H.P., Streubel, J. 2011. Biochar Usage: Pros and Cons. Western Nutrient Management Conference Proceedings. 9:93-98.

Spokas, K.A., Bogner, J., Chanton, J. 2009. A New IPCC Tier 4 Site-Specific Model for Landfill Methane Emissions Inclusive of Seasonal Methane Oxidation. 6th Annual Climate Change Research Symposium, September 8-10, 2009, Sacramento, California.

  

Trade Journals

 

Spokas, K.A., Jacobson, B. 2010. Impacts of Strobilurin Fungicides on Yield and Soil Microbial Processes for Minnesota Strawberry Production.  January 21-22, 2010. St. Cloud, MN. pp. 25-29.

Bogner, J., Spokas, K.A., Chanton, J., Franco, G. 2009. Moving Up to the Top of the Landfill: A Field-Validated, Science-Based Methane Emissions Inventory Model for California Landfills. MSW Management. 19(2):36-39.