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United States Department of Agriculture

Agricultural Research Service

Related Topics

Robert C Schwartz
Soil and Water Management Research
Soil Scientist

Phone: (806) 356-5762
Fax: (806) 356-5750
CONSERVATION AND PRODUCTION RESEARCH LABORATORY
P.O. DRAWER 10 (2300 EXPERIMENT STATION RD - SHIP)
BUSHLAND, TX, 79012-0010

Projects
IMPROVING WATER PRODUCTIVITY AND NEW WATER MANAGEMENT TECHNOLOGIES TO SUSTAIN RURAL ECONOMIES
Appropriated (D)
  Accession Number: 422661

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Precipitation, irrigation and crop growth signals in COSMOS data - (Abstract Only)
Evett, S.R., Schwartz, R.C., Bell, J.M. 2014. Precipitation, irrigation and crop growth signals in COSMOS data. Presented at the 2014 Workshop at MOISST: Advancing Soil Moisture Science and Applications, Stillwater, Oklahoma, 4-5 June 2014. Available at http://soilphysics.okstate.edu/research/moisst-2014-presentations-1.
Time domain reflectometry waveform analysis with second order bounded mean oscillation - (Peer Reviewed Journal) - (03-Apr-14)
Profiling soil water content sensor - (Abstract Only) - (25-Mar-14)
Cosmos Soil Water Sensing Affected by Crop Biomass and Water Status - (Abstract Only)
Evett, S.R., Schwartz, R.C., Bell, J. 2014. COSMOS soil water sensing affected by crop biomass and water status.[abstract]. In Proceedings of the Third In-Situ and Remote Soil Moisture Sensing Technology Conference, March 12-14, 2014, Houston, TX. p.30.
Cosmos Soil Water Sensor Compared with Em Sensor Network & Weighing Lysimeter - (Abstract Only)
Evett, S.R., Schwartz, R.C. 2014. COSMOS soil water sensor compared with EM sensor network & weighing lysimeter.[abstract] W2188 Multi-State Soil Physics Committee Meeting, January 2-4, 2014, Las Vegas, Nevada.
Annual report to W-2188 multi-state research project "Characterizing Mass and Energy Transport at Different Vadose Zone Scales" - (Abstract Only)
Evett, S.R., Schwartz, R.C. 2014. Annual report to W-2188 multi-state research project "Characterizing Mass and Energy Transport at Different Vadose Zone Scales"[abstract]. W2188 Multi-State Soil Physics Committee Meeting, January 2-4, 2014, Las Vegas, Nevada.
A reevaluation of time domain reflectomery propagation time determination in soils - (Peer Reviewed Journal)
Schwartz, R.C., Casanova, J.J., Bell, J.M., Evett, S.R. 2013. A reevaluation of time domain reflectomery propagation time determination in soils. Vadose Zone Journal. 13(1)1-13, doi:10.2136/vzj2013.07.0135.
Maximizing grain sorghum water use efficiency under deficit irrigation - (Abstract Only) - (29-Aug-13)
A reevaluation of TDR propagation time determination in soils and geological media - (Abstract Only)
Schwartz, R.C., Casanova, J.J., Bell, J.M., Evett, S.R. 2013. A reevaluation of TDR propagation time determination in soils and geological media [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Session 413-14, p. 195.
Contrasting tillage effects of infiltration, stored soil water and yield at two locations - (Abstract Only)
Schwartz, R.C., Schlegel, A.J., Baumhardt, R.L., Evett, S.R., Bell, J.M. 2013. Contrasting tillage effects of infiltration, stored soil water and yield at two locations [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Session 182-3, p. 119.
Automated soil water balance sensing: From layers to control volumes - (Abstract Only)
Evett, S.R., Schwartz, R.C., Casanova, J.J., Oshaughnessy, S.A. 2013. Automated soil water balance sensing: From layers to control volumes [abstract] Automated methods for continuous measurements agro climatalogy and forestry workshop, Ben Gurion University, Israel, September 7-12, 2013. p. 7
Soil water sensing methods-Usefulness for evapotranspiration monitoring and links to remote sensing - (Abstract Only) - (01-Aug-13)
Irrigated agriculture with limited water supply:Tools for understanding and managing irrigation and crop water use efficiencies - (Abstract Only)
Evett, S.R., Oshaughnessy, S.A., Colaizzi, P.D., Schwartz, R.C., Howell, T.A. 2013. Irrigated agriculture with limited water supply:Tools for understanding and managing irrigation and crop water use efficiencies [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Session 96-1, p. 86.
An overview of soil water sensors for salinity & irrigation management - (Abstract Only)
Evett, S.R., Schwartz, R.C. 2013. An overview of soil water sensors for salinity & irrigation management. [abstract]. 2013 CDROM
Directly coupled vs conventional time domain reflectometry in soils - (Peer Reviewed Journal)
Casanova, J.J., Schwartz, R.C., Evett, S.R., Anderson, S.K. 2013. Directly coupled vs conventional time domain reflectometry in soils. Applied Engineering in Agriculture. 29(5):771-777.
Residue management effects on water use and yield of deficit irrigated cotton - (Peer Reviewed Journal)
Baumhardt, R.L., Schwartz, R.C., Howell, T.A., Evett, S.R., Colaizzi, P.D. 2013. Residue management effects on water use and yield of deficit irrigated cotton. Agronomy Journal. 105(4):1026-1034.
Residue management effects on water use and yield of deficit irrigated corn - (Peer Reviewed Journal)
Baumhardt, R.L., Schwartz, R.C., Howell, T.A., Evett, S.R., Colaizzi, P.D. 2013. Residue management effects on water use and yield of deficit irrigated corn. Agronomy Journal. 105(4):1035-1044.
Soil water sensors for irrigation management-What works, what doesn't, and why - (Other)
Evett, S.R., Schwartz, R.C., Casanova, J.J. 2013. Soil water sensors for irrigation management-What works, what doesn't, and why. Meeting Abstract. Presentation made at Ogallala Aquifer Workshop, March 7, 2013, Amarillo, TX.
Soil permittivity response to bulk electrical conductivity for selected soil water sensors - (Peer Reviewed Journal)
Schwartz, R.C., Casanova, J.J., Pelletier, M.G., Evett, S.R., Baumhardt, R.L. 2013. Soil permittivity response to bulk electrical conductivity for selected soil water sensors. Vadose Zone Journal. 12(2): doi10.2136/vzj2012.0133.
Irrigation scheduling by ET and soil water sensing - (Abstract Only)
Evett, S.R., Schwartz, R.C., Howell, T.A. 2012. Irrigation scheduling by ET and soil water sensing[abstract]. Irrigation Associations Exposition and Technical Conference, November 3-7, 2012, Orlando, Florida, 2012 CDROM.
Optimizing the use of limited water in agricultural systems - (Abstract Only)
Schwartz, R.C., Ibragimov, N., Evett, S.R., Bell, J.M. 2012. Optimizing the use of limited water in agricultural systems. [abstract]. Uzbekistan-US Sciences Collaboration: Defining the Opportunites, September 27-29,2012 Tashkent, Uzbekistan.
Irrigation science and water quality challenges in Ukbekistan - (Abstract Only)
Evett, S.R., Schwartz, R.C., Butaev, M. 2012. Irrigation science and water quality challenges in Ukbekistan.[abstract]American Association for the Advancement of Science-Academy of Sciences of Uzbekistan joint workshop, U.S. Life Sciences Collaboration:Defining the Opportunites, Tashkent, Uzbekistan, September 27-29, 2012.
A waveguide-on-access-tube (WOAT) TDR sensor for deep soil water content and bulk EC - (Abstract Only)
Evett, S.R., Casanova, J.J., Schwartz, R.C. 2012. A waveguide-on-access-tube (WOAT) TDR sensor for deep soil water content and bulk EC [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. 2012 CDROM. Paper No. 59-11.
Can weighing lysimeter ET represent surrounding field ET well enough to test flux station measurements of daily and sub-daily ET? - (Peer Reviewed Journal)
Evett, S.R., Schwartz, R.C., Howell, T.A., Baumhardt, R.L., Copeland, K.S. 2012. Can weighing lysimeter ET represent surrounding field ET well enough to test flux station measurements of daily and sub-daily ET?. Advances in Water Resources. 50:79-90. http://dx.doi.org/10.1016/j.advwatres.2012.07.023.
Soil water sensor response to bulk electrical conductivity - (Abstract Only)
Schwartz, R.C., Casanova, J.J., Evett, S.R., Bell, J.M., Pelletier, M.G., Baumhardt, R.L. 2012. Soil water sensor response to bulk electrical conductivity. {abstract}. American Society of Agronomy Meetings. 2012 CDROM. Paper No. 59-10.
Increasing yield of deficit irrigated cotton and corn with conservation tillage - (Abstract Only)
Baumhardt, R.L., Schwartz, R.C., Evett, S.R., Colaizzi, P.D., Howell, T.A. 2012. Increasing yield of deficit irrigated cotton and corn with conservation tillage.{abstract}. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 401-33.
Design and field tests of an access-tube soil water sensor - (Peer Reviewed Journal)
Casanova, J.J., Evett, S.R., Schwartz, R.C. 2012. Design and field tests of an access-tube soil water sensor. Applied Engineering in Agriculture. 28(4):603-610.
Soil profile method for soil thermal diffusivity, conductivity and heat flux:Comparison to soil heat flux plates - (Peer Reviewed Journal)
Evett, S.R., Agam, N., Kustas, W.P., Colaizzi, P.D., Schwartz, R.C. 2012. Soil profile method for soil thermal diffusivity, conductivity and heat flux: Comparison to soil heat flux plates. Advances in Water Resources. 50:41-54. http://dx.doi.org/10.1016/j.advwatres.2012.04.012.
Soil water sensors:Problems, advances and potential for irrigation scheduling - (Other)
Evett, S.R., Schwartz, R.C., Casanova, J.J., Lascano, R.J., Oshaughnessy, S.A., Colaizzi, P.D. 2012. Soil water sensors:Problems, advances and potential for irrigation scheduling. Scientific and Technical Review. 2012 CDROM.
Using conservation tillage to increase yield and water use efficiency of corn and cotton under deficit irrigation - (Abstract Only)
Baumhardt, R.L., Schwartz, R.C., Howell, T.A. 2012. Using conservation tillage to increase yield and water use efficiency of corn and cotton under deficit irrigation. [abstract]. Soil and Water Conservation Society. Paper No.61319939.
Residue and long-term tillage and crop rotation effects on simulated rain infiltration and sediment transport - (Peer Reviewed Journal)
Baumhardt, R.L., Johnson, G.L., Schwartz, R.C. 2012. Residue and long-term tillage and crop rotation effects on simulated rain infiltration and sediment transport. Soil Science Society of America Journal. 76(4):1370-1378.
Design of access-tube TDR sensor for soil water content: Testing - (Peer Reviewed Journal)
Casanova, J.J., Evett, S.R., Schwartz, R.C. 2012. Design of access-tube TDR sensor for soil water content: Testing. IEEE Sensors Journal. 12(6):2064-2070.
Soil moisture sensing via swept frequency based microwave sensors - (Peer Reviewed Journal)
Pelletier, M.G., Karthikeyan, S., Green, T.R., Schwartz, R.C., Wanjura, J.D., Holt, G.A. 2012. Soil moisture sensing via swept frequency based microwave sensors. Sensors. 12(1):753-767.
Design of access-tube TDR sensor for soil water content: Theory - (Peer Reviewed Journal)
Casanova, J.J., Evett, S.R., Schwartz, R.C. 2012. Design of access-tube TDR sensor for soil water content: Theory. IEEE Sensors Journal. 12(6):1979-1986.
Soil water sensing for water balance, ET, and WUE - (Peer Reviewed Journal)
Evett, S.R., Schwartz, R.C., Casanova, J.J., Heng, L.K. 2012. Soil water sensing for water balance, ET, and WUE. Agricultural Water Management. 104:1-9.
Radiation model for row crops: II. Model evaluation - (Peer Reviewed Journal)
Colaizzi, P.D., Schwartz, R.C., Evett, S.R., Howell, T.A., Gowda, P., Tolk, J.A. 2012. Radiation model for row crops: II. Model evaluation. Agronomy Journal. 104(2):241-255.
Tillage, residue, and crop rotation effects on rain infiltration and sediment transport - (Abstract Only)
Baumhardt, R.L., Schwartz, R.C. 2011. Tillage, residue, and crop rotation effects on rain infiltration and sediment transport [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 271-2.
Manure and mineral fertilizer effects on seasonal dynamics of bioactive soil phosphorus fractions - (Peer Reviewed Journal)
Schwartz, R.C., Dao, T.H., Bell, J.M. 2011. Manure and mineral fertilizer effects on seasonal dynamics of bioactive soil phosphorus fractions. Agronomy Journal. 103(6):1724-1733.
Quantification of soil water evaporation using TDR-microlysimetry - (Abstract Only)
Bell, J.M., Schwartz, R.C., Mcinnes, K.J., Howell, T.A., Morgan, C.S. 2011. Quantification of soil water evaporation using TDR-microlysimetery [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 341-6.
Design and testing of access-tube TDR soil water sensor - (Proceedings)
Casanova, J.J., Evett, S.R., Schwartz, R.C. 2011. Design and testing of access-tube TDR soil water sensor. ASABE Annual International Meeting. August 7-10, 2011, Louisville, KY. Paper No. 1110994. 2011 CDROM.
Tillage intensity and residue effects on early season evaporation and yield in mung bean - (Abstract Only)
Ibragimov, N.M., Schwartz, R.C., Evett, S.R., Esanbekov, M.Y., Khasanova, F.M., Karabaev, I.T., Mirzaev, L.A. 2011. Tillage intensity and residue effects on early season evaporation and yield in mung bean [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 343-1.
Monitoring near surface soil water and associated dynamics of infiltration and evaporation fluxes - (Abstract Only)
Schwartz, R.C., Schlegel, A.J., Evett, S.R., Baumhardt, R.L. 2011. Monitoring near surface soil water and associated dynamics of infiltration and evaporation fluxes [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 341-13.
Soil heat flux determined from diel water content and temperature variations - (Abstract Only)
Evett, S.R., Agam, N., Kustas, W.P., Colaizzi, P.D., Schwartz, R.C. 2011. Soil heat flux determined from diel water content and temperature variations [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 341-8.
Combined use of neutron thermalization and electromagnetic sensing in assessing soil water dynamics - (Popular Publication)
Schwartz, R.C., Evett, S.R. 2011. Combined use of neutron thermalization and electromagnetic sensing in assessing soil water dynamics. International Atomic Energy Agency. 34:(1)17-19.
Field tests of a down-hole TDR profiling water content measurement system - (Abstract Only)
Casanova, J.J., Evett, S.R., Schwartz, R.C. 2011. Field tests of a down-hole TDR profiling water content measurement system [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 243-6.
Analysis of coaxial soil cell in reflection and transmission - (Peer Reviewed Journal)
Pelletier, M.G., Schwartz, R.C., Evett, S.R., McMichael, B.L., Lascano, R.J., Gitz, D.C. 2011. Analysis of coaxial soil cell in reflection and transmission. Sensors. 11:2592-2610.
Monitoring near surface soil water and associated dynamics of infiltration and evaporation fluxes - (Abstract Only)
Schwartz, R.C., Evett, S.R., Schlegel, A.J., Baumhardt, R.L. 2011. Monitoring near surface soil water and associated dynamics of infiltration and evaporation fluxes [abstract]. European Geosciences Union General Assembly, April 3-8, 2011, Vienna, Austria.
Local and profile soil water content monitoring: A comparison of methods in terms of apparent and actual spatial variation - (Abstract Only)
Evett, S.R., Schwartz, R.C., Ibragimov, N., Mazahreh, N., Katbeh-Bader, N. 2011. Local and profile soil water content monitoring: A comparison of methods in terms of apparent and actual spatial variation [poster]. European Geosciences Union General Assembly, April 3-8, 2011, Vienna, Austria.
Local and profile soil water content monitoring: A comparison of methods in terms of apparent and actual spatial variation - (Abstract Only)
Evett, S.R., Schwartz, R.C., Ibragimov, N., Mazahreh, N.T., Katbeh-Bader, N. 2011. Local and profile soil water content monitoring: A comparison of methods in terms of apparent and actual spatial variation [abstract]. European Geosciences Union General Assembly, April 3-8, 2011, Vienna, Austria. 2011 CDROM
Nitrogen Requirements for Ethanol Production from Sweet and Photoperiod Sensitive Sorghums in the Southern High Plains - (Peer Reviewed Journal)
Bronson, K.F., Schwartz, R.C., Tamang, P.L., Malapati, A., Johnson, J., Moore-Kucera, J. 2011. Nitrogen requirements for ethanol production from sweet and photoperiod sensitive sorghums in the Southern High Plains. Agronomy Journal. 103(2):431-440.
Tillage and cattle grazing effects on soil properties and grain yields in a dryland wheat-sorghum-fallow rotation - (Peer Reviewed Journal)
Baumhardt, R.L., Schwartz, R.C., MacDonald, J.C., Tolk, J.A. 2011. Tillage and cattle grazing effects on soil properties and grain yields in a dryland wheat-sorghum-fallow rotation. Agronomy Journal. 103(3):914-922
Fringe capacitance correction for a coaxial soil cell - (Peer Reviewed Journal)
Pelletier, M.G., Viera, J., Schwartz, R.C., Lascano, R.J., Evett, S.R., Green, T.R., Wanjura, J.D., Holt, G.A. 2011. Fringe capacitance correction for a coaxial soil cell. Sensors. 11(1):757-770.
Water use efficiency of dryland cowpea, sorghum and sunflower under reduced tillage - (Peer Reviewed Journal)
Moroke, T.S., Schwartz, R.C., Brown, K.W., Juo, A.S. 2011. Water use efficiency of dryland cowpea, sorghum and sunflower under reduced tillage. Soil and Tillage Research. 112:(1)76-84.
Soil water sensing for water balance, ET and WUE - (Other) - (07-Nov-10)
In-Soil and Down-Hole Soil Water Sensors: Characteristics for Irrigation Management - (Proceedings)
Evett, S.R., Schwartz, R.C., Lascano, R.J., Pelletier, M.G. 2010. In-Soil and Down-Hole Soil Water Sensors: Characteristics for Irrigation Management. In: Proceedings of the 5th Decennial National Irrigation Symposium, December 5-8, 2010, Phoenix, Arizona. Paper No:IRR10-8346.2010 CDROM.
Soil water sensors for irrigation scheduling:Can they deliver a management allowed depletion? - (Peer Reviewed Journal) - (02-Aug-10)
Tillage effects on soil water redistribution and bare soil evaporation throughout a season - (Peer Reviewed Journal)
Schwartz, R.C., Baumhardt, R.L., Evett, S.R. 2010. Tillage effects on soil water redistribution and bare soil evaporation throughout a season. Soil & Tillage Research. 110(2):221-229.
Manure management effects on phosphorus biotransformations and losses in animal production - (Book / Chapter)
Dao, T.H., Schwartz, R.C. 2011. Manure management effects on phosphorus biotransformations and losses during animal production. In: Bunemann, E.K., Oberson, A., Frossard, E., editors. Phosphorus in Action: Biological processes in soil P cycling. Soil Biology. Berlin, Germany: Springer. p. 407-429.
Column displacement experiments to evaluate electrical conductivity effects on electromagnetic soil water sensing - (Abstract Only)
Schwartz, R.C., Evett, S.R., Pelletier, M.G. 2010. Column displacement experiments to evaluate electrical conductivity effects on electromagnetic soil water sensing [abstract]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, October 31-November 4, 2010, Long Beach, California. Paper No. 301-7. 2010 CDROM.
Long-term conventional and no-tillage management, crop growth, and field hydrology - (Abstract Only)
Baumhardt, R.L., Scanlon, B., Schwartz, R.C., Reedy, R. 2010. Long-term conventional and no-tillage management, crop growth, and field hydrology. ASA-CSSA-SSSA Annual Meeting Abstracts, October 31-November 4, 2010, Long Beach, California. Paper No. 123-12. 2010 CDROM.
Discussion of "Soil Moisture Measurements: Comparison of Instrumentation Performances" by Ventura Francesca, Facini Osvaldo, Piana Stefano, and Rossi Pisa Paola - (Peer Reviewed Journal)
Evett, S.R., Schwartz, R.C. 2011. Discussion of "Soil Moisture Measurements: Comparison of Instrumentation Performances" by Ventura Francesca, Facini Osvaldo, Piana Stefano, and Rossi Pisa Paola. Journal of Irrigation and Drainage.136(2)81-89.
Comments on "J. Vera et. al., Soil water balance trial involving capacitance and neutron probe measurements" - (Peer Reviewed Journal)
Evett, S.R., Schwartz, R.C. 2010. Comments on "J. Vera et. al., Soil water balance trial involving capacitance and neutron probe measurements". Agricultural Water Management. 96:905-911, Agricultural Water Management. 97:182-184.
Mineralizable phosphorus, nitrogen, and carbon relationships in dairy manure at various carbon-to-phosphorus ratios Reprint Icon - (Peer Reviewed Journal)
Dao, T.H., Schwartz, R.C. 2010. Mineralizable phosphorus, nitrogen, and carbon relationships in dairy manure at various carbon-to-phosphorus ratios. Bioresource Technology. 101(10):3567-3574.
Soil water sensors for irrigation scheduling:Can they deliver a management allowed depletion? - (Abstract Only)
Evett, S.R., Schwartz, R.C., Mazahreh, N., Jitan, M., Shaqir, I.M. 2009. Soil water sensors for irrigation scheduling:Can they deliver a management allowed depletion [abstract]? Symposium on Olive Irrigation and Oil Quality, December 5-10, 2009, Nazareth, Israel. p.0-30.
Tillage effects on soil water redistribution and bare soil evaporation throughout a season - (Abstract Only)
Schwartz, R.C., Baumhardt, R.L., Evett, S.R. 2009. Tillage effects on soil water redistribution and bare soil evaporation throughout a season [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America 2009 Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh,Pennsylvania. 2009 CD ROM.
A complex permittivity model for field estimation of soil water contents using time domain reflectometry - (Abstract Only)
Schwartz, R.C., Evett, S.R., Bell, J.M. 2009. A complex permittivity model for field estimation of soil water contents using time domain reflectometry [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America 2009 Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh,Pennsylvania. 2009 CD ROM.
Tillage and grazing effects on yields of a dryland wheat-sorghum-fallow rotation - (Abstract Only)
Baumhardt, R.L., Schwartz, R.C., Macdonald, J.C., Greene, L. Tillage and grazing effects on yields of a dryland wheat-sorghum-fallow rotation [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America 2009 Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh,Pennsylvania. 2009 CD ROM.
Soil profile water content determination:Spatiotemporal variability of electromagnetic and neutron probe sensors in access tubes - (Peer Reviewed Journal)
Evett, S.R., Schwartz, R.C., Tolk, J.A., Howell, T.A. 2009. Soil profile water content determination: Spatiotemporal variability of electromagnetic and neutron probe sensors in access tubes. Vadose Zone Journal. 8(4):926-941.
Assessing indices for predicting potential N mineralization in pedogenically distinct soils under different tillage management systems Reprint Icon - (Peer Reviewed Journal)
Schomberg, H.H., Wietholter, S., Griffin, T.S., Reeves, D.W., Cabrera, M.L., Franzluebbers, A.J., Fisher, D.S., Endale, D.M., Novak, J.M., Balkcom, K.S., Raper, R.L., Kitchen, N.R., Locke, M.A., Potter, K.N., Schwartz, R.C., Truman, C.C., Tyler, D.D. 2009. Assessing indices for predicting potential N mineralization in pedogenically distinct soils under different tillage management systems. Soil Science Society of America Journal. 73(5):1575-1586.
Complex permittivity model for time domain reflectometry soil water content sensing: I. Theory - (Peer Reviewed Journal)
Schwartz, R.C., Evett, S.R., Pelletier, M.G., Bell, J.M. 2009. Complex permittivity model for time domain reflectometry soil water content sensing: I. Theory. Soil Science Society of America Journal. 73(3):896-897.
Complex permittivity model for time domain reflectometry soil water content sensing: II. Calibration - (Peer Reviewed Journal)
Schwartz, R.C., Evett, S.R., Bell, J.M. 2009. Complex permittivity model for time domain reflectometry soil water content sensing: II. Calibration. Soil Science Society of America Journal. 73(3):898-909.
Phosphorus Dynamics in Amended Soils During the Growing Season: II. Ligand Exchange and Mineralization - (Abstract Only)
Dao, T.H., Schwartz, R.C., Bell, J.M. 2008. Phosphorus Dynamics in Amended Soils During the Growing Season: II. Ligand Exchange and Mineralization. Agronomy Abstracts No. 693-7.
Analysis of Coaxial Soil Cell - (Abstract Only)
Pelletier, M.G., Schwartz, R.C., Evett, S.R., Mcmichael, B.L., Lascano, R.J., Gitz, D.C., Baker, J.T., Payton, P.R. 2008. Analysis of Coaxial Soil Cell. In: Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting, Oct. 6-8, 2008, Houston, TX. 2008 CDROM.
Radiometric surface temperature components for row crops - (Abstract Only)
Colaizzi, P.D., Kustas, W.P., Oshaughnessy, S.A., Schwartz, R.C., Evett, S.R., Howell, T.A., Chavez Eguez, J.L., Gowda, P., Tolk, J.A. 2008. Radiometric surface temperature components for row crops [abstract]. 2008 Joint Meeting of American Society of Agronomy, Soil Science Society of America, and Crop Science Society of America, October 5-9, 2008, Houston, Texas. Paper No. 618-14. 2008 CDROM.
Phosphorus dynamics in amended soils during a growing season: I. Availability and plant uptake - (Abstract Only)
Schwartz, R.C., Dao, T.H., Bell, J.M. 2008. Phosphorus dynamics in amended soils during a growing season: I. Availability and plant uptake [abstract].2008 Joint Meeting of American Society of Agronomy, Soil Science Society of America, and Crop Science Society of America, October 5-9, 2008, Houston, Texas. Paper No. 693-6. 2008 CD ROM.
Conservation tillage and deficit irrigation effects on water use and yield of cotton and corn - (Abstract Only)
Baumhardt, R.L., Schwartz, R.C., Howell, T.A. 2008. Conservation tillage and deficit irrigation effects on water use and yield of cotton and corn [abstract]. 2008 Joint Meeting of American Society of Agronomy, Soil Science Society of America, and Crop Science Society of America, October 5-9, 2008, Houston, Texas. Paper No. 755-8. 2008 CDROM.
Cattle gain and crop yield for a dryland wheat-sorghum-fallow rotation - (Peer Reviewed Journal)
Baumhardt, R.L., Schwartz, R.C., Greene, L.W., Macdonald, J. 2009. Cattle gain and crop yield for a dryland wheat-sorghum-fallow rotation. Agronomy Journal. 101:150-158.
Seasonal and long term changes in manure phosphorus availability - (Abstract Only)
Schwartz, R.C. 2007. Seasonal and long term changes in manure phosphorus availability. Nutrient Management Training, November 20, 2007, Texas A&M Research Center, Amarillo, Texas.
Temperature and frequency dependent time-domain reflectometry water content calibrations in fine-textured soils - (Abstract Only)
Schwartz, R.C., Evett, S.R., Bell, J.M. 2007. Temperature and frequency dependent time-domain reflectometry water content calibrations in fine-textured soils [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.
Evaluation of radiation partitioning models at Bushland, Texas - (Abstract Only)
Colaizzi, P.D., Evett, S.R., Howell, T.A., Schwartz, R.C., Tolk, J.A., Gowda, P., Chavez Eguez, J.L. 2007. Evaluation of radiation partitioning models at Bushland, Texas [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.
Long term effects of profile-modifying deep plowing on soil properties and crop yield - (Peer Reviewed Journal)
Baumhardt, R.L., Jones, O., Schwartz, R.C. 2008. Long term effects of profile-modifying deep plowing on soil properties and crop yield. Soil Science Society of America Journal. 72:677-682.
Estimation of soil water balance components using an iterative procedure - (Peer Reviewed Journal)
Schwartz, R.C., Baumhardt, R.L., Howell, T.A. 2008. Estimation of soil water balance components using an iterative procedure. Vadose Zone Journal. 7(1):115-123.
Relationship between LAI and Landsat TM spectral vegetation indices in the Texas Panhandle - (Proceedings)
Gowda, P., Chavez Eguez, J.L., Colaizzi, P.D., Howell, T.A., Schwartz, R.C., Marek, T.H. 2007. Relationship between LAI and Landsat TM spectral vegetation indices in the Texas Panhandle. [abstract]. In: Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). Paper No. 072013. June 17-20, 2007, Minneapolis, Minnesota.
Tillage effects on surface soil properties, crusting, and sorghum emergence - (Abstract Only)
Schwartz, R.C., Bell, J.M., Baumhardt, R.L. 2006. Tillage effects on surface soil properties, crusting, and sorghum emergence [abstract]. ASA-CSSA-SSSA Annual Meeting, November 12-16, 2006, Indianapolis, Indiana. 2006 CDROM.
Deep Tillage Effects on Crop Productivity and Soil Properties 30 Years after Treatment - (Abstract Only)
Baumhardt, R.L., Jones, O.R., Schwartz, R.C. 2006. Deep tillage effects on crop productivity and soil properties 30 years after treatment [abstract]. ASA-CSSA-SSSA Annual Meeting, November 12-16, 2006, Indianapolis, Indiana. 2006 CDROM.
Estimation of Soil Water Content and Evapotranspiration of Dryland Crops Using Neutron Moisture Meter - (Proceedings)
Moroke, S.T., Schwartz, R.C., Brown, K.W., Makore, J. 2006. Estimation of soil water content and evapotranspiration of dryland crops using neutron moisture meter. In: Proceedings of the FAO/IAEA Workshop: Use of Nuclear Techniques in Addressing Soil-Water-Nutrient Issues for Sustainable Agricultural Production. World Congress of Soil Science, July 9-14, 2006, Philadelphia, PA. Session 1-13.
Managing Phosphorus-Enriched Soils: Effects of Iron Amendment on Temporal Dynamics of Bioactive Phosphorus Pools - (Abstract Only)
Dao, T.H., Codling, E.E., Schwartz, R.C. 2006. Managing phosphorus-enriched soils: effects of iron amendment on temporal dynamics of bioactive phosphorus pools [abstract]. World Congress of Soil Science, July 9-15, 2006, Philadelphia, PA. No. 154-11 [CD-ROM].
Monitoring Tillage Effects on Soil Water Dynamics Using Automated Time-Domain Reflectometry - (Abstract Only)
Schwartz, R.C., Baumhardt, R.L., Evett, S.R. 2006. Monitoring tillage effects on soil water dynamics using automated time-domain reflectometry [abstract]. 18th World Congress of Soil Science. Paper No. 116-30.
Estimation of Soil Water Content and Evapotranspiration of Dryland Crops Using the Neutron Moisture Meter - (Abstract Only)
Moroke, T.S., Schwartz, R.C., Brown, K.W., Makore, J. 2006. Estimation of soil water content and evapotranspiration of dryland crops using the neutron moisture meter [abstract]. 18th World Congress of Soil Science. Paper No. 1-13.
Monitoring Tillage Effects on Soil Water Dynamics Using Automated Time-Domain Reflectometry - (Abstract Only)
Schwartz, R.C., Baumhardt, R.L., Evett, S.R. 2006. Monitoring tillage effects on soil water dynamics using automated time-domain reflectometry. In: Proceedings of the 28th Annual Southern Conservation Systems Conference, June 26-28, 2006, Amarillo, Texas. p. 284.
Proceedings of the 28th Southern Conservation Systems Conference - (Government Publication)
Schwartz, R.C., Baumhardt, R.L., Bell, J.M. (editors). 2006. 28th Annual Southern Conservation Systems Conference, June 26-28, 2006, Amarillo, Texas. USDA-ARS Conservation and Production Research Laboratory Report No. 06-1, Bushland, Texas. 46 p.
Tillage and Grazing Effects on Soil Physical Properties and Crop Yield - (Abstract Only)
Baumhardt, R.L., Schwartz, R.C., Greene, L.W. 2006. Tillage and grazing effects on soil physical properties and crop yield [abstract]. In: Proceedings of the 28th Annual Southern Conservation Systems Conference, June 26-28, 2006, Amarillo, Texas. p. 283.
Changes in Extractable Phosphorus in Amended Soils During a Growing Season - (Proceedings)
Schwartz, R.C., Bell, J.M. 2006. Changes in extractable phosphorus in amended soils during a growing season. In: Proceedings Great Plains Soil Fertility Conference, March 7-8, 2006, Denver, Colorado. p. 257-263.
Tillage Effects on Near Surface Soil Water Dynamics - (Abstract Only)
Schwartz, R.C., Baumhardt, R.L., Evett, S.R. 2005. Tillage effects on near surface soil water dynamics [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Salt Lake City, Utah. 2005 CDROM.
Cattle Grazing Effects on Dryland Cropping System Productivity and Soil Properties - (Abstract Only)
Baumhardt, R.L., Greene, L.W., Schwartz, R.C. 2005. Cattle grazing effects on dryland cropping system productivity and soil properties [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Salt Lake City, Utah. 2005 CDROM.
Time Dependent Bioactive Phosphorus Extractability in Calcium and Iron-Treated Soils - (Abstract Only)
Dao, T.H., Codling, E.E., Schwartz, R.C. 2005. Time dependent bioactive phosphorus extractability in calcium- and iron-treated soils. [abstract]Agronomy Abstracts. CD-ROM.
Great Plains Cropping System Studies for Soil Quality Assessment - (Peer Reviewed Journal)
Varvel, G.E., Riedell, W.E., Deibert, E., Mcconkey, B., Tanaka, D.L., Vigil, M.F., Schwartz, R.C. 2006. Great plains cropping system studies for soil quality assessment. Renewable Agriculture and Food System 21:3-14.
Time Dependent Phosphorus Extractability in Calcium and Iron-Treated High-Phosphorus Soils - (Peer Reviewed Journal)
Dao, T.H., Codling, E.E., Schwartz, R.C. 2005. Time dependent phosphorus extractability in calcium- and iron-treated high-phosphorus soils. Soil Science. 170:810-821.
Cropping Systems Influences on Soil Physical Properties in the Great Plains - (Peer Reviewed Journal)
Pikul Jr, J.L., Schwartz, R.C., Benjamin, J.G., Baumhardt, R.L., Merrill, S.D. 2006. Cropping systems influences on soil physical properties in the great plains. Renewable Agriculture and Food System. 21(1):15-25.
Changes in Soil Properties and Enzymatic Activities Following Manure Applications to a Rangeland - (Peer Reviewed Journal)
Bell, J.M., Robinson, C.A., Schwartz, R.C. 2006. Changes in soil properties and enzymatic activities following manure applications to a rangeland. Rangeland Ecology and Management. 59(3):314-320.
Phosphorus Extractability of Soils Amended with Stockpiled and Composted Cattle Manure - (Peer Reviewed Journal)
Schwartz, R.C., Dao, T.H. 2005. Phosphorus extractability of soils amended with stockpiled and composted cattle manure. Journal of Environmental Quality. 34:970-978.
Assimilation Versus Accumulation of Macro and Micronutrients in Soils: Relations to Livestock and Poultry Feeding Operations - (Peer Reviewed Journal)
Cole, N.A., Schwartz, R.C., Todd, R.W. 2005. Assimilation versus accumulation of macro- and micronutrients in soils: relations to livestock and poultry feeding operations. Journal of Applied Poultry Research. 14:393-405.
Soil Water Depletion and Root Distribution of Three Dryland Crops - (Peer Reviewed Journal)
Moroke, T.S., Schwartz, R.C., Brown, K.W., Juo, A.S. 2005. Soil water depletion and root distribution of three dryland crops. Soil Science Society of America Journal. 69:197-205.
Assimilation Vs. Accumulation of Macro and Micro-Nutrients in Soils: Relations to Livestock Feeding Operations - (Abstract Only)
Cole, N.A., Schwartz, R.C., Todd, R.W. 2004. Assimilation vs. accumulation of macro- and micro-nutrients in soils: relations to livestock feeding operations [abstract]. Journal of Animal Science Supplement. 82(1):80.
Assimilation Vs. Accumulation of Macro and Micro-Nutrients in Soils: Relations to Livestock Feeding Operations - (Proceedings)
Cole, N.A., Schwartz, R.C., Todd, R.W. 2004. Assimilation vs. accumulation of macro- and micro-nutrients in soils: relations to livestock feeding operations. Extension Workshop held at the American Society of Animal Science Annual Meeting, July 26, 2004, St. Louis, Missouri. p. 36-51
Phosphorus Extractability of Soils Amended with Stockpiled and Composted Cattle Manure - (Experiment Station)
Schwartz, R.C. 2004. Phosphorus extractability of soils amended with stockpiled and composted cattle manure. Agricultural Research Service Publication. p. 1-44.
Tillage Effects on Near Surface Soil Water Dynamics - (Abstract Only)
Schwartz, R.C., Baumhardt, R.L., Evett, S.R. 2004. Tillage effects on near surface soil water dynamics [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Seattle, Washington. 2004 CDROM.
Crusts/structural - (Other)
Baumhardt, R.L., Schwartz, R.C. 2004. Crusts/Structural. In: Hillel, D., editor. Encyclopedia of Soils in the Environment. Oxford, UK: Elsevier Press. p. 347-356.
Great Plains Soil Quality Assessment Project: Locations and Cropping Systems - (Abstract Only)
VARVEL, G.E., RIEDELL, W.E., TANAKA, D.L., VIGIL, M.F., SCHWARTZ, R.C., DEIBERT, E., MCCONKEY, B. 2003. GREAT PLAINS SOIL QUALITY ASSESSMENT PROJECT: LOCATIONS AND CROPPING SYSTEMS. AGRONOMY ABSTRACTS #872941.
Assessment of Cropping System in the Great Plains on Soil Quality: Physical Properties - (Abstract Only)
Pikul Jr, J.L., Schwartz, R.C., Benjamin, J.G., Baumhardt, R.L., Merrill, S.D. 2003. Assessment of cropping system in the great plains on soil quality: physical properties. Annual Meetings Abstracts, Soil Science Society Of America Annual Meeting. November 2-6, 2003, Denver, CO. CD-Rom.
Assessment of Cropping System Effects on Soil Quality in the Great Plains: Introduction - (Proceedings)
VARVEL, G.E., RIEDELL, W.E., DEIBERT, E., MCCONKEY, B., TANAKA, D.L., VIGIL, M.F., SCHWARTZ, R.C. ASSESSMENT OF CROPPING SYSTEM EFFECTS ON SOIL QUALITY IN THE GREAT PLAINS: INTRODUCTION. Proceedings from Dynamic Cropping Systems: Prinicples, Processes, and Challenges. pp. 197-204. 2003.
Soil Physical Characteristics of Contrasting Cropping Systems in the Great Plains: Preliminary Findings - (Proceedings)
PIKUL JR, J.L., SCHWARTZ, R.C., BENJAMIN, J.G., BAUMHARDT, R.L., MERRILL, S.D. SOIL PHYSICAL CHARACTERISTICS OF CONTRASTING CROPPING SYSTEMS IN THE GREAT PLAINS: PRELIMINARY FINDINGS. DYNAMIC CROPPING SYSTEMS: PRINCIPLES, PROCESSES AND CHALLENGES. 2003. p. 205-209.
Soil Water Use and Grain Yield of Three Dryland Crops under Differing Tillage Systems - (Abstract Only)
MOROKE, T.S., SCHWARTZ, R.C., BROWN, K.W., JUO, A. SOIL WATER USE AND GRAIN YIELD OF THREE DRYLAND CROPS UNDER DIFFERING TILLAGE SYSTEMS. CD-ROM. AGRONOMY ABSTRACTS. 2002.
The Idsfit Code for Inverse Estimation of Field Hydraulic Properties Using a Disc Infiltrometer - (Book / Chapter) - (31-Jul-02)
The Idsfit Code for Inverse Estimation of Field Hydraulic Properties Using a Disc Infiltrometer - (Other) - (31-Jul-02)
Soil hydraulic properties of cropland compared with reestablished and native grassland - (Peer Reviewed Journal)
Schwartz, R.C., Evett, S.R., Unger, P.W. 2003. Soil hydraulic properties of cropland compared with reestablished and native grassland. Geoderma 116:47-60.
Soil Hydraulic Properties of Cropland Compared with Reestablished and Native Grassland - (Peer Reviewed Journal) - (02-Jul-02)
Effects of Taller Wheat Residue after Stripper Header Harvest on Wind Run, Irradiant Energy Interception, and Evaporation - (Proceedings) - (24-May-02)
Tillage and Beef Cattle Manure Effects on Soil Nitrogen in a Dryland Rotation - (Proceedings)
SCHWARTZ, R.C., BAUMHARDT, R.L., DAO, T.H. TILLAGE AND BEEF CATTLE MANURE EFFECTS ON SOIL NITROGEN IN A DRYLAND ROTATION. PROCEEDINGS OF THE GREAT PLAINS SOIL FERTILITY CONFERENCE. 2002. P. 66-71.
Influence of Soil Layering on Infiltration from a Disc Source - (Abstract Only) - (21-Oct-01)
Soil Phosphorus Levels Following Manure and Compost Applications to a Wheat-Sorghum-Fallow Rotation - (Abstract Only) - (05-Jul-00)
Land Use Effects on Soil Hydraulic Properties - (Proceedings) - (02-Jul-00)
Estimating Parameters for a Dual-Porosity Model to Describe Non-Equilibrium, Reactive Transport in a Fine-Textured Soil - (Peer Reviewed Journal) - (27-Dec-99)
Field Estimation of Hydraulic Properties Using a Tension Infiltrometer - (Abstract Only) - (01-Nov-99)
The Vertical Distribution of a Dye Tracer in a Layered Soil - (Peer Reviewed Journal) - (26-Mar-99)
Reactive Transport of Bromide in Two Mobile Regions with Linear Diffusive Exchange - (Abstract Only) - (09-Dec-98)
ARS News Articles
Last Modified: 8/1/2014
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