Research Soil Scientist
Francisco Calderón
Soil Scientist
Phone: 970-345-0517
E-Mail: Francisco.Calderon@ars.usda.gov
Education
1987 B.S. Biology, Univ. of Puerto Rico
1992 M.S. Biology, Univ. of Puerto Rico
1997 Ph.D. Crop and Soil Science/Microbial Ecology, Michigan State Univ.
Research Interests
Mycorrhizae
Soil microbial ecology
Soil C cycling
Dryland Crop Rotations
No projects listed for this employee.
will take you to the publication reprint.)
-(Peer Reviewed Journal)
Moiser, S., Apfelbaum, S., Byck, P., Calderon, F.J., Teague, R., Thompson, R., Cotrufo, M.F. 2021. Adaptive multi-paddock grazing enhances soil carbon and nitrogen stocks and stabilization through mineral association in southeastern U.S. grazing lands. Journal of Environmental Management. 288. Article e112409. https://doi.org/10.1016/j.jenvman.2021.112409.
Liebig, M.A., Durso, L.M., Calderon, F.J., Eberly, J., Jin, V.L., Stewart, C.E., Van Pelt, R.S., Vigil, M.F., Duke, S.E., Clemensen, A.K., Duttenhefner, J. 2020. Long-Term soil change in the Great Plains: an evaluation of the haas soil archive. Meeting Abstract. 1.
Stewart, C.E., Jin, V.L., Liebig, M.A., Calderon, F.J., Vigil, M.F. 2020. What long-term research can tell us about agroecosystem C storage potential. Meeting Abstract.
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Avera, B., Rhoades, C., Calderon, F.J., Cotrufo, F. 2020. Soil C storage following salvage logging and residue management in bark beetle-infested lodgepole pine forests. Forest Ecology and Management. 472:1-8. https://doi.org/10.1016/j.foreco.2020.118251.
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Avera, B.N., Rhoades, C., Calderon, F.J., Cotrufo, M.F. 2020. Soil C storage following salvage logging and residue management in bark beetle-infested lodgepole pine forests. Forest Ecology and Management. 472. Article e118251. https://doi.org/10.1016/j.foreco.2020.118251.
-(Peer Reviewed Journal)
Schneekloth, J., Calderon, F.J., Fonte, S., Nielsen, D.C. 2020. Tillage and residue management effects on irrigated corn (zea mays) performance and water cycling in a semiarid cropping system of Eastern Colorado. Irrigation Science. 38:547-557. https://doi.org/10.1007/s00271-020-00702-2.
Stewart, C.E., Manter, D.K., Delgado, J.A., Del Grosso, S.J., Calderon, F.J., Heckman, K., Snell, K. 2020. Nitrogen fertilization and long-term no tillage impacts on soil properties and deep soil c storage under irrigation. Proceedings Great Plains Soil Fertility Conference.
Bowles, T.M., Mooshammer, M., Socolar, Y., Calderon, F.J., Cavigelli, M.A., Culman, S.W., Deen, W., Drury, C.F., Garcia Y Garcia, A., Gaudin, A., Harkcom, W., Lehman, R.M., Osborne, S.L., Robertson, G., Salerno, J., Schmer, M.R., Strock, J., Grandy, A. 2020. Long-term evidence shows crop rotation diversification increases agricultural resilience to adverse climate conditions in North America. One Earth. 2:284-293.
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Wade, J., Maltais-Landry, G., Lucas, D.E., Bongiorno, G., Bowles, T.M., Calderon, F.J., Culman, S.W., Daughtridge, R., Ernakovish, J.G., Fonte, S.J., Giang, D., Herman, B.L., Guan, L., Jastrow, J.D., Loh, B.H., Courtland, K., Mann, M.E., Matamala, R., Miernicki, E.A., Peterson, B.M., Pulleman, M.M., Scow, K.M., Snapp, S.S., Thomas, V., Tu, X., Wang, D., Jelinski, N.A., Liles, G.C., Barrios-Masias, F.H., Silveira, M.L., Margenot, A.J. 2020. Assessing the sensitivity and repeatability of permanganate oxidizable carbon as a soil health metric: An interlab comparison across soils. Geoderma. 366:1-11. https://doi.org/10.1016/j.geoderma.2020.114235.
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Ramirez, P., Calderon, F.J., Fonte, S., Santibanez, F., Bonilla, C. 2020. Spectral responses to labile organic carbon fractions as useful soil quality indicators across a climatic gradient. Ecological Indicators. 111:106042. https://doi.org/10.1016/j.ecolind.2019.106042.
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Olayemi, P., Kallenbach, C., Schneekloth, J., Calderon, F.J., Vigil, M.F., Wallenstein, M. 2020. Potential soil health benefits of lactobionate - a cheese production byproduct. Frontiers in Sustainable Food Systems. 3:127. https://doi.org/10.3389/fsufs.2019.00127.
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Melman, D.A., Schneekloth, J., Courtland, K., Calderon, F.J., Fonte, S.J. 2019. Tillage and residue management drive soil quality and functional changes in an irrigated cropping system of Eastern Colorado. Applied Soil Ecology. 143: 98-106. https://doi.org/10.1016/j.apsoil.2019.05.022.
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Matamala, R., Jastrow, J.D., Calderon, F.J., Liang, C., Fan, Z., Michaelson, G., Ping, C. 2019. Predicting the decomposability of arctic tundra soil organic matter with mid infrared spectroscopy. Soil Biology and Biochemistry. 129:1-12. https://doi.org/10.1016/j.soilbio.2018.10.014.
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Ramirez, P., Calderon, F.J., Fonte, S., Bonilla, C. 2018. Environmental controls and long-term changes on carbon stocks under agricultural lands. Global Change Biology. 186:310-321. https://doi.org/10.1016/j.still.2018.10.018.
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Kallenbach, C.M., Contant, R., Calderon, F.J., Wallenstein, M.D. 2019. A novel soil amendment for enhancing soil moisture retention and soil carbon in drought-prone soils. Geoderma. 337: 256-265. https://doi.org/10.1016/j.geoderma.2018.09.027.
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Brewer, P., Calderon, F.J., Vigil, M.F., Von Fischer, J. 2018. Impacts of moisture, soil respiration, and agricultural practices on methanogenesis in upland soils as measured with stable isotope pool dilution. Soil Biology and Biochemistry. 127:239-251. https://www.sciencedirect.com/science/article/pii/S0038071718303092?via%3Dihub.
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Trimble, B.R., Calderon, F.J., Poulson, S., Verburg, P.S. 2018. Land conversion to irrigated agriculture reduces labile and increases recalcitrant carbon in a semi-arid Nevada soil. Soil Biology and Biochemistry. 2:3-38. https://doi.org/10.3390/soilsystems2030038.
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Margenot, A., Parikh, S., Calderon, F.J. 2019. Improving infrared spectroscopy characterization of soil organic matter with spectral subtractions. Journal of Visualized Experiments. 143. https://www.jove.com/video/57464.
-(Peer Reviewed Journal)
Ernakovich, J., Lynch, L., Brewer, P., Calderon, F.J., Wallenstein, M. 2017. The circuitry of ecosystem metabolism: CO2 and CH4 flux from permafrost soils. Soil Biology and Biochemistry. 134:183-200. doi:10.1007/s10533-017-0354-5.
Matamala, R., Jastrow, J.D., Fan, Z., Liang, C., Calderon, F.J., Michaelson, G., Ping, C.L., Mishra, U. 2017. Predicting Potential C Mineralization of Tundra Soils Using Spectroscopy Techniques [abstract]. DOE Environmental System Science (ESS) PI Meeting, April 25-26, 2017, Potomac, MD.
-(Peer Reviewed Journal)
Matamala, R., Calderon, F.J., Jastrow, J., Fan, Z., Hoffman, S., Michaelson, G., Mishra, U., Ping, C. 2017. Influence of site and soil properties on the DRIFT spectra of northern cold-region soils. Geoderma. 305:80-91. doi:10.1016/j.geoderma.2017.05.014.
Calderon, F.J., Vigil, M.F., Benjamin, J.G. 2018. Compost input effects on dryland wheat and forage yields and soil quality. Pedosphere. 28(3):451-462.
Li, C., Fultz, L., Kucera, J.M., Acosta Martinez, V., Horita, J., Strauss, R., Zak, J., Calderon, F., Weindorf, D. 2017. Soil carbon sequestration potential in semi-arid grasslands in the conservation reserve program. Geoderma. 297:80-90.
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Margenot, A., Calderon, F.J., Magrini, K., Evans, R. 2017. Application of DRIFTS, NMR, and py-MBMS to characterize the effects of soil science oxidation assays on soil organic matter composition in a Mollic Xerofluvent. Applied Spectroscopy. 71(7):1506-1518. doi: 10.1177/0003702817691776.
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Calderon, F.J., Culman, S., Six, J., Franzluebbers, A.J., Schipanski, M., Beniston, J., Grandy, S., Kong, A.Y. 2017. Quantification of soil permanganate oxidizable c (poxc) using infrared spectroscopy. Soil Science Society of America Journal. 81:277-288. doi:10.2136/sssaj2016.07.0216.
Matamala, R., Fan, Z., Jastrow, J.D., Liang, C., Calderon, F.J., Michaleson, G., Ping, C.L., Mishra, U., Hofmann, S.M. 2016. Using Mid Infrared Spectroscopy to Predict the Decomposability of Soil Organic Matter Stored in Arctic Tundra Soils [abstract]. 2016 American Geophysical Union Annual Meeting, San Francisco, CA. December 12-16, 2016.
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Haddix, M., Calderon, F.J., Conant, R., Magrini-Bair, K., Paul, E.A., Evans, R., Wallenstein, M.D., Morris, S.J. 2016. Progressing towards more quantitative analytical pyrolysis of soil organic matter using molecular beam mass spectroscopy of whole soils and added standards. Geoderma. 283(1):88-100. doi:10.1016/j.geoderma.2016.07.027.
Calderon, F.J., Kucera, J.M., Acosta Martinez, V., Fultz, L., Chenhui, L. 2016. Soil particulate organic matter dynamics after conservation reserve program land is converted to cropland. ASA-CSSA-SSSA Annual Meeting Abstracts. 2016.
Kelly, C., Benjamin, J.G., Calderon, F.J., Mikha, M.M., Rutherford, D., Rostad, C. 2017. The incorporation of biochar carbon into stable soil aggregates: the role of clay mineralogy and other soil characteristics. Pedosphere. 27(4):694-704.
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Mckee, G., Soong, J., Calderon, F.J., Borch, T., Cotrufo, F. 2016. An integrated spectroscopic and wet chemical approach to investigate grass litter decomposition chemistry. Biogeochemistry. 128:107-123. doi:10.1007/s10533-016-0197-5.
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Margenot, A., Calderon, F.J., Parikh, S. 2015. Limitations and potential of spectral subtractions in fourier-transform infrared (FTIR) spectroscopy of soil samples. Soil Science Society of America Journal. 2015.
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Calderon, F.J., Nielsen, D.C., Acosta Martinez, V., Vigil, M.F., Lyon, D. 2016. Cover crop and irrigation effects on soil microbial communities and enzymes in semiarid agroecosystems of the Central Great Plains of North America. Pedosphere. 26(2):192-205.
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Benjamin, J.G., Nielsen, D.C., Vigil, M.F., Mikha, M.M., Calderon, F.J. 2015. Cumulative deficit irrigation effects on corn (Zea mays, L.) biomass and grain yield. Agricultural Water Management. 159/107-114.
Nielsen, D.C., Lyon, D.J., Hergert, G.W., Higgins, R.K., Calderon, F.J., Vigil, M.F. 2015. Cover crop water use. CSA News. Available: http://www.crops.org/publications/CSA/pdfs/60/6/12.
Webb, K.M., Calderon, F.J. 2015. Mid-infared (MidIR) and near-infared (NIR) dection of rhizoctonia solani AG 2-2 IIIB on barley based artificial inoculum. Applied Spectroscopy. 69:1129-1136.
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Bell, C., Asao, S., Calderon, F.J., Wolk, B., Wallenstein, M. 2015. Plant nitrogen uptake drives rhizosphere bacterial community assembly during plant growth. Soil Biology and Biochemistry. Available: http://dx.doi.org/10.1016/j.soilbio.2015.03.006.
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Kelly, C., Calderon, F.J., Acosta Martinez, V., Mikha, M.M., Benjamin, J.G., Rutherford, D., Rostad, C. 2015. Switchgrass biochar effects on soil microbial dynamics and wheat yield in two soils from different regions. Pedosphere. 25(3): 329–342.
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Andrew, M., Calderon, F.J., Parikh, S., Jackson, L.E. 2015. Soil organic matter functional group composition in relation to organic C, N and P fractions in organically managed tomato fields characterized by mid-infrared spectroscopy. Soil Science Society of America Journal. doi:10.2136/sssaj2015.02.0070.
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Ernakovich, J., Wallenstein, M., Calderon, F.J. 2015. Chemical indicators of cryoturbation and microbial processing throughout an alaskan permafrost soil depth profile. Soil Science Society of America Journal. doi:10.2136/sssaj2014.10.0420.
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Calderon, F.J., Benjamin, J.G., Vigil, M.F. 2015. A comparison of corn residue and its biochar on soil C and plant growth. PLoS One. doi:10.1371/journal.pone.0121006.
Soong, J.L., Parton, W., Calderon, F.J., Campbell, N., Cotrufo, M.F. 2015. A new conceptual model on the fate and controls of fresh and pyrolized plant litter decomposition. Biogeochemistry. DOI 10.1007/s10533-015-0079-2.
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Nielsen, D.C., Lyon, D.J., Hergert, G.W., Higgins, R.K., Calderon, F.J., Vigil, M.F. 2015. Cover crops in mixtures do not use water differently than single-species plantings. Agronomy Journal. 107:1025-1038.
Nielsen, D.C., Lyon, D.J., Calderon, F.J., Hergert, G.W., Higgins, R. 2015. High plains cover crop research. Cover Your Acres Winter Conference Proceedings. 12:7-12.
Fultz, L., Kakarla, M., Moore-Kucera, J., Acosta Martinez, V., Zak, J.C., Horita, J., Calderon, F.J. 2014. Soil C dynamics in a 26-year CRP chronosequence on an Amarillo fine sandy loam[abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. November 3-6, 2014, Tampa, Florida. Paper No. 78611.
-(Peer Reviewed Journal)
Fultz, L., Moore-Kucera, J., Calderon, F.J., Acosta Martinez, V. 2014. Using fourier-transform mid-infrared spectroscopy to distinguish soil organic matter composition dynamics in aggregate fractions of two agroecosystems. Soil Science Society of America Journal. 78:1940-1948.
Soong, J.L., Betzen, J., Calderon, F.J., Cotrufo, F. 2014. Quantifying and characterizing dissolved carbon and nitrogen leaching from litter: a comparison of methods. Plant and Soil. Available: http://link.springer.com/article/10.1007%2Fs11104-014-2232-4.
Padilla, J., Calderon, F.J., Acosta Martinez, V., Van Pelt, R.S., Gardner, T., Baddock, M., Zobeck, T.M., Noveron, J.C. 2014. Diffuse-reflectance mid-infrared spectrocopy reveals chemical differences in soil organic matter carried in different size wind eroded sediments. Aeolian Research. 15:193-201.
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Benjamin, J.G., Nielsen, D.C., Vigil, M.F., Mikha, M.M., Calderon, F.J. 2014. Water deficit stress effects on corn (Zea mays, L.) root: shoot ratio. Open Journal of Soil Science 4:151-160.
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Parikh, S., Goyne, K.W., Margenot, A.J., Mukome, F., Calderon, F.J. 2014. Soil chemical insights provided through vibrational spectroscopy. Advances in Agronomy. Available: http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=2473&context=usdaarsfacpub.
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Bowles, T.M., Acosta Martinez, V., Calderon, F.J., Jackson, L.E. 2014. Soil enzyme activities, microbial communities and carbon and nitrogen availability in organic agroecosystems across an intensively-managed agricultural landscape. Soil Biology and Biochemistry. 68:252-262.
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Calderon, F.J., Haddix, M., Conant, R., Magrini-Bair, K., Paul, E.A. 2013. Diffuse-reflectance fourier-transform mid-infrared spectroscopy as a method of characterizing changes in soil organic matter. Soil Science Society of America Journal. 77:1591-1600.
Benjamin, J.G., Nielsen, D.C., Vigil, M.F., Mikha, M.M., Calderon, F.J. 2013. A comparison of two models to evaluate soil physical property effects on corn (Zea mays, L.)root growth. Agronomy Journal. 105:713-720.
Gardner, T.G., Acosta Martinez, V., Zobeck, T.M., Baddock, M.C., Van Pelt, R.S., Senwo, Z., Calderon, F.J., Cox, S., Dowd, S. 2012. Pyrosequencing reveals bacteria carried in different wind eroded sediments[abstract]. Soil and Water Conservation Society. July 22-25, 2012. Ft. Worth, Texas.
Calderon, F.J., Schultz, D.J., Eldor, P.A. 2012. Carbon allocation below ground transfers and lipid turnover in a plant-microbial association. Soil Science Society of America Journal. 76:1614-1623.
Gardner, T., Acosta Martinez, V., Senwo, Z., Calderon, F.J., Dowd, S., Baddock, M., Van Pelt, R.S., Zobeck, T.M. 2012. Pyrosequencing reveal distinct bacteria are carried in different wind eroded sediments from the same soil. Journal of Environmental Quality. 41(3):744-753.
Davinic, M., Fultz, L.J., Acosta Martinez, V., Calderon, F.J., Cox, S.R., Dowd, S., Allen, V., Zak, J., Moore-Kucera, J. 2012. Pyrosequencing and mid-infrared spectroscopy techniques reveal distinct aggregate stratification of soil bacterial communities and organic matter composition. Soil Biology and Biochemistry. 46:63-72.
Davinic, M., Fultz, L., Moore Kucera, J., Acosta Martinez, V., Calderon, F.J., Cox, S., Allen, V., Zak, J. 2011. Aggregate stratification assessment of soil bacterial communities and organic matter composition: Coupling pyrosequencing and mid-infrared spectroscopy techniques[abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America Annual Meeting. October 16-19, 2011, San Antonio, Texas.
Calderon, F.J., Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Poss, D.J. 2012. Water use and yields of no-till managed dryland grasspea and yellow pea under different planting configurations. Field Crops Research. 125:179-185.
Calderon, F.J., Mikha, M.M., Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Reeves III, J.B. 2012. Diffuse-reflectance mid-infrared spectral properties of soils under alternative crop rotations in a semiarid climate. Communications in Soil Science and Plant Analysis. 42:17, 2143-2159.
Acosta Martinez, V., Lascano, R.J., Calderon, F.J., Booker, J.D., Zobeck, T.M., Upchurch, D.R. 2011. Dryland cropping systems influence microbial biomass and enzyme activities in a sandy soil in a semiarid region. Biology and Fertility of Soils. 47(6):655-667.
Calderon, F.J., Reeves III, J.B., Collins, H.P., Eldor, P.A. 2011. Chemical differences in soil organic matter fractions determined by diffuse-reflectance mid-infrared spectroscopy. Soil Science Society of America Journal. 75(2)568-579.
Paul, E.A., Mellor, N., Haddix, M., Magrini, K., Calderon, F.J., Morris, S. 2010. Relating Soil Organic Matter Dynamics to its Molecular Structure. Meeting Abstract. Presented at the Soil Organic Matter 2010 Organic Matter Stabilization and Ecosystem Functions. 19 to 23 September 2010. Presquile de Giens (Cote D'Azur)France.
Ernakovich, J., Challenger, A., Calderon, F.J., Wallenstein, M. 2010. Vulnerability of Permafrost Soil Carbon to Climate Warming: Evaluating Controls on Microbial Community Composition. Meeting Abstract. Poster presentation at the 13th International Society for Microbial Ecology Meeting. Aug. 22-27, 2010. Seattle, WA.
Calderon, F.J., Reeves III, J.B., Vigil, M.F. 2010. Mid-Infrared Spectroscopic Properties of Humic Acid and Fulvic Acid-Soil Mixtures.. Meeting Proceedings. 15th Annual Meeting of the International Humic Substances Society, June 27-July 2, 2010. Tenerife, Spain.
Calderon, F.J., Reeves Iii, J.B., Vigil, M.F. 2010. Mid-Infrared Spectroscopic Properties of Humic Acid and Fulvic Acid-Soil Mixtures. Meeting Abstract. Presented at the 15th International Humic Substances Society Meeting. June 27 to July 2, 2010. Pto. De la Cruz, Tenerife, Spain.
Nielsen, D.C., Calderon, F.J. 2011. Fallow Effects on Soil. p. 287-300 In J.L. Hatfield and T.J. Sauer (ed) Soil Management:building a stable base for agriculture. ASA and SSSA, Madison, WI.
Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Calderon, F.J., Mikha, M.M. 2009. Alternative Dryland Cropping Systems to Wheat Fallow. Agronomy Abstracts. Presented at the ASA-CSSA-SSSA Annual meeting. Nov. 1-5, 2009. Pittsburg, PA.
Calderon, F.J., Reeves III, J.B., Vigil, M.F., Poss, D.J. 2009. Mid-Infrared and Near Infrared Calibrations for Nutritional Parameters of Triticale (Triticosecale) and Pea (Pisum sativum). Journal of Agriculture and Food Chemistry. 57:5136-5142. doi:10.1021/jf803936x.
Calderon, F.J., Schneekloth, J., Nielsen, D.C., Vigil, M.F. 2009. Sunflower Production in Skip Row Configurations for the Semi-Arid Central Plains. Meeting Proceedings. Presented at the National Sunflower Association Research Forum. Jan. 12-15, 2009. Fargo, ND. Pages 1-4.
Calderon, F.J., Hanson, L.E., Panella, L.W., Reeves III, J.B., Vigil, M.F. 2009. Mid-Infrared and Near-Infrared Spectroscopic Properties of Fusarium Isolates: Effects of Culture Conditions. Meeting proceedings poster presentation at the American Phytopathological Society Annual Meeting. Aug. 1-5, 2009. Portland, OR.
Calderon, F.J., Acosta Martinez, V., Douds, D.D., Reeves III, J.B., Vigil, M.F. 2009. Mid-Infrared and Near Infrared Spectral Properties of Mycorrhizal and Non-Mycorrhizal Root Cultures. Journal of Applied Spectroscopy. 63(5)494-500.
Mikha, M.M., Vigil, M.F., Calderon, F.J. 2008. Gas Flux in Tillage Field That Have Been in No-Tillage for 12 Years. Agronomy Abstract. Presented at the International American Society of Agronomy meetings, Crop Science Society of America and Soil Science Society of America (ASA/CSSA/SSSA) annual meetings. Oct. 5-9, 2008. Houston, TX.
Nielsen, D.C., Henry, W.B., Vigil, M.F., Calderon, F.J., West, M.S. 2008. Proso Millet Yield and Residue Mass Following Direct Harvest with a Stripper-header. Agronomy Abstract. Presented at the International American Society of Agronomy meetings, Crop Science Society of America and Soil Science Society of America (ASA/CSSA/SSSA) annual meetings. Oct. 5-9, 2008. Houston, TX.
Vigil, M.F., Mikha, M.M., Nielsen, D.C., Benjamin, J.G., Calderon, F.J. 2008. Alternative Crop Rotations in the Semi-arid Central Great Plains Region: How Much Fallow? Evaluating the Economics. Meeting Proceedings. Presented at the XXI Congreso Argentino de la Ciencia Del Suelo. 13 al 16 de Mayo de 2008. Potrero de los Funes (San Luis) Argentina. Page 524.
Mikha, M.M., Vigil, M.F., Benjamin, J.G., Poss, D.J., Calderon, F.J. 2008. Best Management Practices for Remediation/Restoration of Degraded Soils in the Central Great Plains Region. Meeting Proceedings of the 18th High Altitude Revegetation Workshop #18. Information Series #105. Pages 461-470. March 4-6, 2008. Fort Collins, Colo.
Vigil, M.F., Henry, W.B., Calderon, F.J., Poss, D.J., Nielsen, D.C., Benjamin, J.G., Klein, R. 2008. A use of Skip-row Planting as a Strategy for Drought Mitigation in the West Central Great Plains. Meeting Proceedings. Presented at the 2008 Great Plains Soil Fertility Conference. Denver, Colo. March 5, 2008. Vol. 12:101-106.
Meisinger, J.J., Calderon, F.J., Jenkinson, D.S. 2008. Soil Nitrogen Budgets. American Society of Agronomy Monograph Series. 13:505-562.
Henry, W.B., Nielsen, D.C., Vigil, M.F., Calderon, F.J., West, M.S. 2008. Proso Millet Yield and Residue Mass following Direct Harvest with a Stripper-Header. Agronomy Journal 100:580-584.
Henry, W.B., Nielsen, D.C., Vigil, M.F., Calderon, F.J., West, M.S. 2008. Proso millet yield and residue mass following direct harvest with a stripper-header. Agronomy Journal. 100:580-584.
Calderon, F.J., Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Mikha, M.M. 2008. A comparison of Dryland Grasspea (lathyrus sativus l.) and Admiral Pea (pisum sativum l.) Grown Under Different Row Spacings. Meeting Proceedings. Presented at the 2008 Great Plains Soil Fertility Conference. Denver, Colo. March 5, 2008. Vol. 12:107-111.
Calderon, F.J., Reeves III, J.B., Foster, J.G., Clapham, W.M., Fedders, J.M., Vigil, M.F., Henry, W.B. 2007. Comparison of Diffuse Reflectance Fourier Transform Mid-Infrared and Near-Infrared Spectroscopy with Grating-Based Near-Infrared for the Determination of Fatty Acids in Forages. Journal of Agricultural and Food Chemistry 55:8302-8309.
Calderon, F.J., Reeves Iii, J.B., Foster, J.G., Clapham, W.M., Fedders, J.M., Vigil, M.F., Henry, W.B. 2007. Diffuse Reflectance Fourier Transform Mid-Infrared Spectral Properties of Forages with Varied Fatty Acid Content. Meeting Abstract. Presented at the 2007 National Federation of Analytical Chemistry and Spectroscopy Societies annual meeting. Oct. 14-18, 2007. Memphis, TN.
Nielsen, D.C., Vigil, M.F., Calderon, F.J., Schneekloth, J., Poss, D.J., Henry, W.B., Benjamin, J.G. 2007. Soil Water Extraction Patterns in Skip Row Corn, Sorghum, and Sunflower. Meeting Abstract. Presented at the National American Society of Agronomy Annual Meeting. Nov. 5-8, 2007. New Orleans, LA.
Calderon, F.J., Reeves Iii, J.B., Foster, J.G., Clapham, W.M., Fedders, J.M., Vigil, M.F., Henry, W.B. 2007. Diffuse Reflectance Fourier Transform Mid-infrared Spectral Properties of Forages with Varied Fatty Acid Content. Meeting Abstract. Presented at the Federation of Analytical Chemistry and Spectroscopy Societies Conference. October 14-18, 2007. Memphis, TN.
Benjamin, J.G., Mikha, M.M., Nielsen, D.C., Vigil, M.F., Calderon, F.J., Henry, W.B. 2007. Cropping Intensity Effects on Physical Properties of a No-till Silt Loam Soil. Soil Science Society of America Journal 71:1160-1165.
Henry, W.B., Nielsen, D.C., Foster, J.G., Calderon, F.J., Vigil, M.F. 2007. Weed control possibilities and harvest strategies for the Omega-3 fatty acid producing crop common purslane (Portulacca oleracea var. sativa) [abstract]. Proceedings 2007 Weed Science Society of America Annual Meeting. p. 56.
Vigil, M.F., Henry, W.B., Nielsen, D.C., Calderon, F.J., Benjamin, J.G., Klien, R. 2006. Skip-Row Planting as a Drought Avoidance Strategy in the West Central Great Plains. Agronomy Abstracts. Presented at the National American Society of Agronomy Meetings/Soil Science Society of America (ASA/SSSA)Annual Meetings. November 13-16, 2006. Indianapolis, IN.
Calderon, F.J., Reeves Iii, J.B. 2007. Drifts and Near Infrared Spectroscopy Analysis of Fresh and Decomposed Cattle Manure. Meeting Proceedings of the 12th International Conference on Near Infrared Spectroscopy in Auckland, New Zealand. April 10-15, 2005. Pages 45-48.
Calderon, F.J., Acosta Martinez, V. 2006. Diffuse-Reflectance Mid-IR and NIR Spectroscopic Properties of Mycorrhizal and Non-mycorrhizal roots. Meeting Abstract. Federation of Analytical Chemistry and Spectroscopy (FACSS) National Meeting for the Society for Applied Spectroscopy. Sept. 24-28, 2006. Lake Buena Vista, FL.
Vigil, M.F., Henry, W.B., Poss, D.J., Nielsen, D.C., Calderon, F.J., Benjamin, J.G., Klein, R. 2006. Skip-row Planting in the CGPR as a Drought Mitigation Strategy. Meeting Abstract. Presented at the 18th World Congress of Soil Science in Phildelphia, PA July 9-13, 2006.
Calderon, F.J., Venterea, R.T. 2005. Diffuse reflectance mid-infrared spectroscopy (drifts) of soils under different tillage and crop rotation regimes. Agronomy Abstract. Presented at the 2005 ASA.CSSA-SSSA International Annual Meeting. Nov.6-10, 2005. Salt Lake City, UT
Calderon, F.J., Reeves III, J.B., McCarty, G.W. 2005. Pyrolisis-MS and FT-IR analysis of fresh and decomposed dairy manure. Journal of Analytical & Applied Pyrolysis. 76:14-23.
Mikha, M.M., Vigil, M.F., Benjamin, J.G., Nielsen, D.C., Henry, W.B., Calderon, F.J. 2005. Carbon sequestration and aggregate size distribution as affected by cropping intensity. Agronomy Abstract. Presented at the 2005 ASA, CSSA-SSSA International Annual Meeting. Nov. 6-10, 2005. Salt Lake City, UT.
Vigil, M.F., Nielsen, D.C., Henry, W.B., Benjamin, J.G., Mikha, M.M., Calderon, F.J. 2005. How much fallow: Evaluating the economics of alternative rotations at Akron, Colorado. Agronomy Abstract. Presented at the 2005 ASA,CSSA-SSSA International Annual Meeting. Nov. 6-10, 2005. Salt Lake City, UT
Henry, W.B., Calderon, F.J., Shaner, D.L. 2005. Fourier-transformed diffuse reflectance to measure herbicide injury in the nir and mid-ir in soybean and weed species. Agronomy Abstract. Presented at the 2005 ASA, CSSA-SSSA International Annual Meeting. Nov. 6-10, 2005. Salt Lake City, UT
Steenwerth, K.L., Jackson, L.E., Calderon, F.J., Scow, K.M., Rolston, D.E. 2005. Response of microbial community composition and activity in agricultural and grassland soils after simulated rainfall. Soil Biology and Biochemistry. 37: 2249-2262.
Calderon, F.J., Mccarty, G.W., Reeves III, J.B. 2005. Analysis of manure and soil nitrogen mineralization during incubation. Biology and Fertility of Soils. 41:328-336.
Calderon, F.J., Reeves III, J.B., Mccarty, G.W. 2005. Nitrapyrin delays denitrification on manured soils. Soil Science. 170(5):350-359.
Calderon, F.J., Reeves III, J.B. 2005. Nir and FT-IR analysis of fresh and decomposed cattle manure. Meeting Abstract. The 12th International Conference on Near Infrared Spectroscopy. April 10-15, 2005. Auckland, New Zealand
Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Henry, W.B., Mikha, M.M., Calderon, F.J., Anderson, R.L., Bowman, R.A. 2005. Changes in soil after 14 years of no-till alternative crop rotation research. Proceedings of the 17th Annual Winter Conference, Colorado Conservation Tillage Association in cooperation with National Sunflower Association presents The High Plains No-Till Conference. Feb. 1-2. 2005. Island Grove Park, Greeley, CO. P. L1-L6.
Calderon, F.J., Reeves III, J.B., McCarty, G.W. 2004. Infrared spectroscopy of cattle manure after soil application. Agronomy Abstracts. Presented at the 2004 ASA-CSSA-SSSA International Annual Meeting. Oct. 31-Nov. 4, 2004. Seattle, WA. CD-ROM #3781.
Calderon, F.J., Reeves III, J.B., McCarty, G.W., Van Kessel, J.S. 2004. Carbon and nitrogen dynamics during incubation of manured soil. Soil Science Society America Journal. 68(5):1592-1599.
Jackson, L.E., Ramirez, I., Yokota, R., Fennimore, S.A., Koike, S.T., Henderson, D.M., Chaney, W.E., Calderon, F.J., Klonsky, K. 2004. On-farm assessment of organic matter and tillage management on vegetable yield, soil, weeds, pests, and economics in California. Agriculture Ecosystems and the Environment. 103:443-463.
Calderon, F.J., Reeves III, J.B., Mccarty, G.W. 2003. Nitrogen mineralization and changes in manure organic matter after soil application [abstract]. American Society of Agronomy. Agronomy Abstracts 2003 CDROM S05-calderon187520.
Calderon, F.J., Van Kessel, J.S., Mccarty, G.W., Reeves Iii, J.B. 2002. Manure properties: effect on c and n mineralization during laboratory incubation of manure amended soil. USDA Symposium on Natural Resource Management to Offset Greenhouse Gas Emissions.