Projects

Improving Soil and Water Management Practices in Cropping and Integrated Crop-Livestock Systems Appropriated (D)   Accession Number: 410974

Irrigation Management and Automation for Increased Water Use Efficiency Appropriated (D)   Accession Number: 411512

Sustaining Rural Economies Through New Water Management Technologies Appropriated (D)   Accession Number: 411513

Calibration and Application of Large Aperture Scintillometers in the Texas High Plains Nonfunded Cooperative Agreement (N)   Accession Number: 411845

Agricultural Water-Use Efficiency Reimbursable (R)   Accession Number: 417031

Assessment of Texas Evapotranspiration (Et) Networks Reimbursable (R)   Accession Number: 412710

Sustainable Groundwater Management under Variable Climate and Land Use Change Specific Cooperative Agreement (S)   Accession Number: 414734

Water Conservation Technologies and Management Practices in the Ogallala Aquifer Region - Wtamu Specific Cooperative Agreement (S)   Accession Number: 418400

Water and Energy Management for Efficient Irrigation Specific Cooperative Agreement (S)   Accession Number: 410077

Water Conservation Technologies and Management Practices in the Ogallala Aquifer Region - Tamu Specific Cooperative Agreement (S)   Accession Number: 418382

Deficit Irrigation Management to Conserve Ogallala Aquifer Water Specific Cooperative Agreement (S)   Accession Number: 410081

Deficit Irrigation Management to Conserve Ogallala Aquifer Water Specific Cooperative Agreement (S)   Accession Number: 410086

Crop Evapotranspiration Determination Using Eddy Covariance Fluxes, High Resolution Remote Sensing Imagery & a Surface Temperature Approach Specific Cooperative Agreement (S)   Accession Number: 418392

New Water Management Technologies to Sustain Rural Economies - Ksu Specific Cooperative Agreement (S)   Accession Number: 411244

New Water Management Technologies to Sustain Rural Economies - Ttu Specific Cooperative Agreement (S)   Accession Number: 411254

Assessing Crop Evapotranspiration (Et) from Point to Regional Scale in the Texas High Plains Specific Cooperative Agreement (S)   Accession Number: 411785

Water Conservation Technologies and Management Practices in the Ogallala Aquifer Region - Ksu Specific Cooperative Agreement (S)   Accession Number: 418378

Water Conservation Technologies and Management Practices in the Ogallala Aquifer Region - Ttu Specific Cooperative Agreement (S)   Accession Number: 418399

Impact of Agriculture on Groundwater Recharge in the Texas High Plains Specific Cooperative Agreement (S)   Accession Number: 414215

New Water Management Technologies to Sustain Rural Economies - Tamu Specific Cooperative Agreement (S)   Accession Number: 411255

New Water Management Technologies to Sustain Rural Economies - Wtamu Specific Cooperative Agreement (S)   Accession Number: 411256

Publications

A geometric model for row crops to estimate sunlit and shaded vegetation and soil in a radiometer footprint - (Peer Reviewed Journal) - (05-Jan-10)

Water use and yield of cotton grown in four Great Plains soils - (Abstract)

Tolk, J.A., Howell, T.A. 2009. Water use and yield of cotton grown in four Great Plains soils [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh, Pennsylvania. 2009 CDROM.

Evaluation of five surface energy balance approaches for mapping ET using Landsat TM data acquired during BEAREX08 - (Abstract)

Gowda, P., Howell, T.A., Vinukollu, R., Colaizzi, P.D., Copeland, K.S. 2009. Evaluation of five surface energy balance approaches for mapping ET using Landsat TM data acquired during BEAREX08 [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 CDROM.

Remote sensing for crop water use management: Present status and challenge - (Abstract)

Gowda, P., Chavez, J.L., Colaizzi, P.D., Howell, T.A. 2009. Remote sensing for crop water use management: Present status and challenge [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.

Application of the Priestley-Taylor Approach in a Two-Source Surface Energy Balance Model - (Peer Reviewed Journal) - (17-Aug-09)

Daily evapotranspiration estimates by scaling instantaneous latent heat flux derived from a two-source model - (Abstract)

Colaizzi, P.D., Kustas, W.P., Evett, S.R., Howell, T.A., Gowda, P. 2009. Daily evaptranspiration estimates by scaling instantaneous latent heat flux derived from a two-source model [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 CDROM.

Aerodynamic Temperature Derived from Flux-Profile Measurements and Two-Source Model Predictions over a Cotton Row Crop in an Advective Environment - (Abstract)

Chavez, J.L., Kustas, W.P., Gowda, P., Howell, T.A., Prueger, J.H., Hipps, L.E., Oshaughnessy, S.A., Colaizzi, P.D., Evett, S.R., Neale, C., Anderson, M.C., Copeland, K.S. 2009. Aerodynamic temperature derived from flux-profile measurements and two-source model predictions over a cotton row crop in an advective environment [abstract]. The International Annual Meetings of the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Symposium on Remote Sensing at Multiple Scales: The Bushland Evapotranspiration and Agricultural Remote Sensing Experiment. http://a-c-s.confex.com/crops/2009am/webprogram/Paper55678.html.

A dual-temperature-difference approach to estimate daytime sensible and latent heat fluxes under advective conditions during BEAREX08 - (Abstract)

Colaizzi, P.D., Kustas, W.P., Evett, S.R., Howell, T.A. 2009. A dual-temperature-difference approach to estimate daytime sensible and latent heat fluxes under advective conditions during BEAREX08 [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 CDROM.

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.

Lysimetric evaluation of simplified surface energy balance approach in the Texas High Plains - (Peer Reviewed Journal)

Gowda, P., Senay, G.B., Howell, T.A., Marek, T.H. 2009. Lysimetric evaluation of simplified surface energy balance approach in the Texas High Plains. Applied Engineering in Agriculture. 25(5):665-669.

Mapping ET at high resolution in an advective semi-arid environment with airborne multispectral imagery - (Proceedings/Symposium)

Chavez, J., Gowda, P., Howell, T.A., Garcia, L., Copeland, K.S. 2009. Mapping ET at high resolution in an advective semi-arid environment with airborne multispectral imagery. Environmental and Water Resources Institute World Congress Proceedings, May 17-21, 2009, Kansas City, Missouri.p.4411-4421.2009 CDROM.

Independent comparisons among calibration and output of energy balance components estimated by the METRIC procedure - (Proceedings/Symposium)

Kjaersgaard, J., Gowda, P., Allen, R., Howell, T.A. 2009. Independent comparisons among calibration and output of energy balance components estimated by the METRIC procedure. Environmental and Water Resources Institute World Congress Proceedings. May 17-21, 2009, Kansas City, Missouri, p.4362-4371. 2009 CDROM

Evaluating eddy covariance cotton ET measurements in an advective environment with large weighing lysimeters - (Peer Reviewed Journal)

Chavez Eguez, J.L., Howell, T.A., Copeland, K.S. 2009. Evaluating eddy covariance cotton ET measurements in an advective environment with large weighing lysimeters. Irrigation Science. 28(1):35-50.

Estimating hourly crop ET using a two-source energy balance model and multispectral airborne imagery - (Peer Reviewed Journal)

Chavez Eguez, J.L., Gowda, P., Howell, T.A., Neale, C., Copeland, K.S. 2009. Estimating hourly crop ET using a two-source energy balance model and multispectral airborne imagery. Irrigation Science. 28(1):79-91. [doi:10.1007/s00271-009-0177-9]

Modeling irrigation management strategies to maximize cotton lint yield and water use efficiency - (Peer Reviewed Journal)

Baumhardt, R.L., Staggenborg, S.A., Gowda, P., Colaizzi, P.D., Howell, T.A. 2009. Modeling irrigation management strategies to maximize cotton lint yield and water use efficiency. Agronomy Journal. 101:460-468.

Advanced irrigation engineering: Precision and Precise - (Proceedings/Symposium)

Howell, T.A., Evett, S.R., Oshaughnessy, S.A., Colaizzi, P.D., Gowda, P. 2009. Advanced irrigation engineering: Precision and Precise. Dahlia Greidinger International Symposium. March 2-5,2009, Haifa, Israel. p.63-64

Concordance correlation for model performance assessment: An example with reference evapotranspiration - (Peer Reviewed Journal)

Meek, D.W., Howell, T.A., Phene, C. Concordance correlation for model performance assessment: An example with reference evapotranspiration. Agronomy Journal. 101(4): 1012-1018.

Global climatic change effects on irrigation requirements for the Central Great Plains - (Proceedings/Symposium)

Howell, T.A. 2009. Global climatic change effects on irrigation requirements for the Central Great Plains.In: Proceedings of the Central Plains Irrigation Conference and Exposition, February 24-25 2009, Colby, Kansas. p. 25-39.

Comparison of grain sorghum, soybean, and cotton production under spray, LEPA, and SDI - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A., Baumhardt, R.L. 2009.Comparison of grain sorghum, soybean, and cotton production under spray, LEPA, and SDI. In:Proceedings of the Central Plains Irrigation Conference and Exposition, February 24-25, 2009, Colby,Kansas. p.122-139.

Soil water measurement and thermal indices for center pivot irrigation scheduling - (Proceedings/Symposium)

OShaughnessy, S.A., Evett, S.R., Colaizzi, P.D., Howell, T.A. 2008. Soil water measurement and thermal indices for center pivot irrigation scheduling. International Irrigation Association Conference, November 2-4, 2008, Anaheim, California. 2008 CDROM

Estimating shortwave solar radiation using net radiation and meteorological measurements - (Abstract) - (23-Oct-08)

Groundwater modeling of the Texas High Plains using MODFLOW - (Abstract)

Hernandez, J.E., Gowda, P., Misra, D., Marek, T., Howell, T.A. Groundwater modeling of the Texas High Plains using MODFLOW [abstract]. American Geophysical Union. Paper No. H21D-0861.

Evaluating airborne remote sensing ET estimates using eddy covariance systems and a heat flux source area function. - (Proceedings/Symposium)

Chavez Eguez, J.L., Howell, T.A., Gowda, P., Neale, C.M., Colaizzi, P.D. 2008. Evaluating airborne remote sensing ET estimates using eddy covariance systems and a heat flux source area function. Irrigation Association Conference Proceedings, November 2-4, 2008, Anaheim,California. 2008 CDROM.

Validating the FAO AquaCrop model for irrigated and water deficient field maize - (Peer Reviewed Journal)

Heng, L., Hsiao, T., Steduto, P., Evett, S.R., Howell, T.A., Raes, D., Fereres, E. 2009. Validating the FAO AquaCrop model for irrigated and water deficient field maize. Agronomy Journal. 101(3):488-498.

Transpiration and yield relationships of grain sorghum grown in a field environment - (Peer Reviewed Journal)

Tolk, J.A., Howell, T.A. 2009. Transpiration and yield relationships of grain sorghum grown in a field environment. Agronomy Journal. 101(3):657-662.

Surface energy balance based evapotranspiration mapping in the Texas High Plains - (Peer Reviewed Journal)

Gowda, P., Chavez Eguez, J.L., Howell, T.A., Marek, T.H., New, L.L. 2008. Surface energy balance based evapotranspiration mapping in the Texas High Plains. Sensors. 8:5186-5201. [doi: 10.3390/s8085186]

Role of irrigation and irrigation automation in improving crop water use efficiency - (Abstract)

Evett, S.R., Howell, T.A. 2008. Role of irrigation and irrigation automation in improving crop water use efficiency [abstract]. In: Proceedings of International Symposium on Water in Agriculture and Forestry: Challenges, Technological Solutions and Innovations, October 21-23, 2008, Beijing, China. p.16.

Finger millet: An alternative forage crop for Southern High Plains - (Abstract)

Gowda, P., Howell, T.A., Vara Prasad, P.V. 2008. Finger millet: An alternative forage crop for Southern High Plains [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. 569-5. 2008 CDROM.

Modeling surface energy fluxes over Texas High Plains using Two-Source Model - (Abstract)

Gowda, P., Howell, T.A., Gillies, R.R. 2008. Modeling surface energy fluxes over Texas High Plains using Two-Source Model [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. 619-3. 2008 CDROM.

Comparison of estimated surface energy fluxes using METRIC and two-source algorithms for Advective Conditions - (Abstract)

Akasheh, O., Gowda, P., Scanlon, B.R., Howell, T.A., French, A.N. 2008. Comparison of estimated surface energy fluxes using METRIC and two-source algorithms for Advective Conditions [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. 535-2. 2008 CDROM.

Monitoring ET over Texas High Plains using two source model and high resolution aster data - (Abstract)

Akasheh, O., Gowda, P., Scanlon, B.R., Howell, T.A., French, A.N. 2008. Monitoring ET over Texas High Plains using two source model and high resolution aster data [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. 74-8. 2008 CDROM.

Estimating crop canopy coverage of cotton plants within the FOV of an infrared thermometer using a two band photodiode sensor - (Abstract)

Oshaughnessy, S.A., Evett, S.R., Colaizzi, P.D., Howell, T.A., Gowda, P. 2008. Estimating crop canopy coverage of cotton plants within the FOV of an infrared thermometer using a two band photodiode sensor [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. 619-2. 2008 CD ROM.

Radiometric surface temperature components for row crops - (Abstract)

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.

Radiometric surface temperature calibration effects on satellite based evapotranspiration estimation - (Peer Reviewed Journal)

Chavez Eguez, J.L., Gowda, P., Howell, T.A., Copeland, K.S. 2009. Radiometric surface temperature calibration effects on satellite based evapotranspiration estimation. International Journal of Remote Sensing. 30(9):2337-2354.

Two- and one-layer implicit energy balance solutions compared with the one-layer explicit Penman-Monteith solution for evapotranspiration of alfalfa - (Abstract)

Evett, S.R., Howell, T.A., Lascano, R.J., Tolk, J.A. 2008. Two- and one-layer implicit energy balance solutions compared with the one-layer explicit Penman-Monteith solution for evapotranspiration of alfalfa [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.703-3. 2008 CDROM.

Conservation tillage and deficit irrigation effects on water use and yield of cotton and corn - (Abstract)

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.

Field water supply:Yield relationships of grain sorghum grown in three USA Southern Great Plains soils - (Peer Reviewed Journal)

Tolk, J.A., Howell, T.A. 2008. Field water supply: Yield relationships of grain sorghum grown in three USA Southern Great Plains soils. Agricultural Water Management. 95(12):1303-1313.

Simulating the effects of growing season length and irrigation practices on cotton growth and yield - (Abstract)

Baumhardt, R.L., Staggenborg, S., Gowda, P., Colaizzi, P.D., Howell, T.A. 2008. Simulating the effects of growing season length and irrigation practices on cotton growth and yield [abstract]. 38th Biological Systems Simulation Conference, April 8-10, 2008, Temple, Texas. p. 20-21.

Energy balance of irrigated and dryland cotton in the Southern High Plains - (Abstract)

Howell, T.A., Evett, S.R., Tolk, J.A., Colaizzi, P.D., Gowda, P., Chavez Eguez, J.L., Copeland, K.S. 2008. Energy balance of irrigated and dryland cotton in the Southern High Plains [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. 779-1. 2008 CDROM.

ET mapping with METRIC algorithm using airborne high resolution multispectral remote sensing imagery - (Abstract)

Chavez Eguez, J.L., Gowda, P., Howell, T.A., Neale, C.M., Colaizzi, P.D., Akasheh, O.Z. 2008. Et mapping with metric algorithm using airborne high resolution multispectral remote sensing imagery [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. 74-10. 2008 CDROM.

Clump planting to reduce the tiller production and increase the yield in dryland corn - (Abstract)

Kapanigowda, M., Stewart, B.A., Howell, T.A., Baumhardt, R.L., Kadasrivenkata, H., Colaizzi, P.D. 2008. Clump planting to reduce the tiller production and increase the yield in dryland 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. 755-3. 2008 CD ROM.

Addressing the world water crisis - (Popular Publication)

Howell, T.A. 2008. Addressing the world water crisis. American Society of Agricultural and Biological Engineers Resource Magazine. 15(3):5-8.

Planting date forecast for cotton using minimum and maximum air temperature - (Abstract)

Gowda, P., Baumhardt, R.L., Howell, T.A., Marek, T.H. 2008. Planting date forecast for cotton using minimum and maximum air temperature [abstract]. 38th Biological Systems Simulation Conference, April 8-10, 2008, Temple,Texas. p. 50-51.

Comparing SEBAL ET with lysimeter data in the semi-arid Texas High Plains - (Proceedings/Symposium)

Gowda, P., Howell, T.A., Chavez Eguez, J.L., Copeland, K.S., Paul, G. 2008. Comparing SEBAL ET with lysimeter data in the semi-arid Texas High Plains. In: Proceedings of the Environmental and Water Resources Institute World Congress, May 12-16, 2008, Honolulu, Hawaii. 2008 CDROM.

Cotton production potential and water conservation impact using the regional irrigation demand model of northern Texas - (Proceedings/Symposium)

Marek, T., Porter, D., Howell, T.A., Gowda, P., Colaizzi, P.D., Amosson, S., Bretz, F. 2008. Cotton production potential and water conservation impact using the regional irrigation demand model of northern Texas. In: Proceedings of the Environmental and Water Resources Institute World Congress, May 12-16, 2008, Honolulu, Hawaii. 2008 CDROM.

Is irrigation real or am I imagining it? - (Proceedings/Symposium)

Howell, T.A., Lamm, F. 2007. Is irrigation real or am I imagining it?. In: Proceedings of the 28th Annual International Irrigation Show, December 9-11, 2007, San Diego, California. p. 284-291. 2007 CDROM.

Ensuring equal opportunity sprinkler irrigation - (Proceedings/Symposium)

Lamm, F.R., Howell, T.A., Bordovsky, J.P. 2007. Ensuring equal opportunity sprinkler irrigation. In: Proceedings of the 28th Annual International Irrigation Show, December 9-11, 2007, San Diego, California. p 147-153. 2007 CDROM.

Evaluating three evapotranspiration mapping algorithms with lysimetric data in the semi-arid Texas High Plains - (Proceedings/Symposium)

Chavez Eguez, J.L., Gowda, P., Howell, T.A., Copeland, K.S. 2007. Evaluating three evapotranspiration mapping algorithms with lysimetric data in the semi-arid Texas High Plains. In: Proceedings of the 28th Annual International Irrigation Show, December 9-11, 2007, San Diego, California. p. 268-283. 2007 CDROM.

Determination of crop coefficients (Kc) for irrigation management of crops - (Proceedings/Symposium)

Piccinni, G., Ko, J., Wentz, A., Leskovar, D., Marek, T., Howell, T.A. 2007. Determination of crop coefficients (Kc) for irrigation management of crops. In: Proceedings of the 28th Annual International Irrigation Show, December 9-11, 2007, San Diego, California. p. 706-719. 2007 CDROM.

Preliminary evaluation of sensible heat flux measurements from a large aperture scintillometer using lysimetric data - (Abstract)

Gowda, P., Howell, T.A., Scanlon, B.R., Copeland, K.S., Bush, K.A. 2007. Preliminary evaluation of sensible heat flux measurements from a large aperture scintillometer using lysimetric data [abstract]. American Geophysical Union Fall Meeting, December 10-14, 2007, San Francisco, California. 2007 CDROM.

Hourly and daily evapotranspiration of alfalfa under regional advection - (Abstract)

Howell, T.A., Tolk, J.A., Evett, S.R., Copeland, K.S. 2007. Hourly and daily evapotranspiration of alfalfa under regional advection [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Managing field water supply to increase water use efficiency - (Abstract)

Tolk, J.A., Howell, T.A. 2007. Managing field water supply to increase water use efficiency [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Evaluation of radiation partitioning models at Bushland, Texas - (Abstract)

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.

An aerodynamic temperature-based regional ET model evaluation for Texas High Plains agrometeorological conditions - (Abstract)

Chavez Eguez, J.L., Gowda, P., Howell, T.A., Copeland, K.S. 2007. An aerodynamic temperature-based regional ET model evaluation for Texas High Plains agrometeorological conditions [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Bushland Evapotranspiration and Agricultural Remote Sensing EXperiment 2007 (BEAREX07) - (Abstract)

Gowda, P., Chavez Eguez, J.L., Howell, T.A., Scanlon, B.R., Neale, C.M., French, A.N., Colaizzi, P.D., Evett, S.R. 2007. Bushland Evapotranspiration and Agricultural Remote Sensing EXperiment 2007 (BEAREX07) [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Irrigation in water restricted regions: Managing water use efficiency with limited available water - (Abstract)

Rowland, D., Piccinni, G., Howell, T.A., Ko, J., Marek, T.H., Faircloth, W.H., Payton, P.R., Tissue, D.T. 2007. Irrigation in water restricted regions: Managing water use efficiency with limited available water [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Water- and radiation-use efficiency models for estimating biomass production - (Abstract)

Stockle, C.O., Kemanian, A.R., Kremer, C., Howell, T.A. 2007. Water- and radiation-use efficiency models for estimating biomass production [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Evaluating irrigation management strategies to maximize cotton yield and water use efficiency: A simulation analysis - (Abstract)

Baumhardt, R.L., Staggenborg, S.A., Gowda, P., Colaizzi, P.D., Howell, T.A. 2007. Evaluating irrigation management strategies to maximize cotton yield and water use efficiency: A simulation analysis [abstract]. ASA-CSSA-SSSA Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Evapotranspiration: Progress in measurement and modeling in agriculture - (Peer Reviewed Journal)

Farahani, H.J., Howell, T.A., Shuttleworth, W.J., Bausch, W.C. 2007. Evapotranspiration: Progress in measurement and modeling in agriculture. Transactions of the ASABE. 50(5):1627-1638.

Evapotranspiration of deficit irrigated sorghum and winter wheat - (Proceedings/Symposium)

Howell, T.A., Tolk, J.A., Evett, S.R., Copeland, K.S., Dusek, D.A. 2007. Evapotranspiration of deficit irrigated sorghum and winter wheat. In: Clemmens, A.J., editor. USCID Fourth International Conference on Irrigation and Drainage. The Role of Irrigation and Drainage in a Sustainable Future, October 3-6, 2007, Sacramento, California. p. 223-239. 2007 CDROM.

Remote sensing based energy balance algorithms for mapping ET: Current status and future challenges - (Peer Reviewed Journal)

Gowda, P., Chavez Eguez, J.L., Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A. 2007. Remote sensing based energy balance algorithms for mapping ET: Current status and future challenges. Transactions of the ASABE. 50(5):1639-1644.

ET mapping for agricultural water management: present status and challenges - (Peer Reviewed Journal)

Gowda, P., Chavez Eguez, J.L., Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A. 2008. ET mapping for agricultural water management: Present status and challenges. Irrigation Science. 26:223-237.

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.

Remote sensing of contrasting tillage practices in the Texas Panhandle - (Peer Reviewed Journal)

Gowda, P., Howell, T.A., Evett, S.R., Chavez Eguez, J.L., New, L. 2008. Remote sensing of contrasting tillage practices in the Texas Panhandle. International Journal of Remote Sensing. 29(12):3477-3487.

Heat unit availability for cotton production in the Ogallala Aquifer Region of the United States - (Peer Reviewed Journal)

Esparza, A., Gowda, P., Baumhardt, R.L., Marek, T., Howell, T.A. 2007. Heat unit availability for cotton production in the Ogallala Aquifer Region of the United States. Journal of Cotton Science. 11(3):110-117.

Evapotranspiration of deficit irrigated sorghum - (Experiment Station)

Howell, T.A., Tolk, J.A., Evett, S.R., Copeland, K.S., Dusek, D.A. 2007. Evapotranspiration of deficit irrigated sorghum. Texas Experiment Station Field Day Handout. p. 32-39.

Mapping evapotranspiration in the Texas Panhandle - (Proceedings/Symposium)

Chavez Eguez, J.L., Gowda, P., Howell, T.A., Marek, T.H., New, L.L. 2007. Mapping evapotranspiration in the Texas Panhandle. Texas Experiment Station Field Day Handout. p. 23-31.

Evapotranspiration of deficit irrigated sorghum - (Proceedings/Symposium)

Howell, T.A., Tolk, J.A., Evett, S.R., Copeland, K.S., Dusek, D.A. 2007. Evapotranspiration of deficit irrigated sorghum. In: Proceedings of the World Water and Environmental Resources Congress, May 15-19, 2007, Tampa, Florida. 2007 CDROM.

Two-source energy balance model evaluation for mapping evapotranspiration on the semi-arid Southern High Plains - (Abstract)

Gowda, P., Chavez Eguez, J.L., Colaizzi, P.D., Evett, S.R., Howell, T.A., Copeland, K.S. 2007. Two-source energy balance model evaluation for mapping evapotranspiration on the semi-arid Southern High Plains [abstract]. 2007 AGU Joint Assembly, May 22-25, 2007, Acapulco, Mexico. 2007 CDROM.

Metric Estimated Et Evaluation on the Semiarid Southern High Plains - (Abstract)

Chavez Eguez, J.L., Gowda, P., Colaizzi, P.D., Evett, S.R., Howell, T.A., Copeland, K.S. 2007. Metric estimated ET evaluation on the semiarid Southern High Plains [abstract]. 2007 AGU Joint Assembly, May 22-25, 2007, Acapulco, Mexico. 2007 CDROM.

Suitability of cotton as an alternative crop in the Ogallala Aquifer Region - (Peer Reviewed Journal)

Gowda, P., Baumhardt, R.L., Esparza, A.M., Marek, T., Howell, T.A. 2007. Suitability of cotton as an alternative crop in the Ogallala Aquifer Region. Agronomy Journal. 99:1397-1403.

Sorghum Management Practices Suited to Varying Irrigation Strategies: a Simulation Analysis - (Peer Reviewed Journal)

Baumhardt, R.L., Tolk, J.A., Howell, T.A., Rosenthal, W.D. 2007. Sorghum management practices suited to varying irrigation strategies: A simulation analysis. Agronomy Journal. 99:665-672.

Evapotranspiration mapping using METRIC for a region with highly advective conditions - (Proceedings/Symposium)

Chavez Eguez, J.L., Gowda, P., Howell, T.A., Marek, T.H., New, L.L. 2007. Evapotranspiration mapping using METRIC for a region with highly advective conditions. [abstract]. In: Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). Paper No. 072146. June 17-20, 2007, Minneapolis, Minnesota.

Relationship between LAI and Landsat TM spectral vegetation indices in the Texas Panhandle - (Proceedings/Symposium)

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.

Comparison of soil water sensing methods for irrigation management and research - (Proceedings/Symposium)

Evett, S.R., Howell, T.A., Tolk, J.A. 2007. Comparison of soil water sensing methods for irrigation management and research. In: Proceedings of the Central Plains Irrigation Conference, February 27-28, 2007, Kearney, Nebraska. p. 1-19.

Subsurface drip irrigation (SDI) research at USDA-ARS in Bushland, TX - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2006. Subsurface drip irrigation (SDI) research at USDA-ARS in Bushland, TX. Proceedings of the First International Conference on Water in Arid and Semiarid Lands (ICASALS), November 15-17, 2006, Texas Tech University, Lubbock, Texas. 10 p.

Advection Influences on Evapotranspiration of Alfalfa in a Semiarid Environment - (Abstract)

Tolk, J.A., Evett, S.R., Howell, T.A. 2006. Advection influences on evapotranspiration of alfalfa in a semiarid environment [abstract]. ASA-CSSA-SSSA Annual Meeting, November 12-16, 2006, Indianapolis, Indiana. 2006 CDROM.

Near-surface soil water and temperature for SDI, LEPA, and spray irrigation - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2006. Near-surface soil water and temperature for SDI, LEPA, and spray irrigation. In: Irrigation Association Conference Proceedings, November 5-7, 2006, San Antonio, Texas. 2006 CDROM.

Evaluating Cotton Yield Potential in the Ogallala Aquifer Region - (Proceedings/Symposium)

Gowda, P., Esparza, A.M., Baumhardt, R.L., Colaizzi, P.D., Howell, T.A. 2006. Evaluating cotton yield potential in the Ogallala Aquifer region. Ground Water and Surface Water Under Stress: Competition, Interaction, Solutions. A USCID Water Management Conference, October 25-28, 2006, Boise, Idaho. p. 127-137.

Advection Influences on Evapotranspiration of Alfalfa in a Semiarid Environment - (Peer Reviewed Journal)

Tolk, J.A., Evett, S.R., Howell, T.A. 2006. Advection influences on evapotranspiration of alfalfa in a semiarid environment. Agronomy Journal. 98:1646-1654.

Weighing lysimeters for the determination of crop water requirements and crop coefficients - (Peer Reviewed Journal)

Marek, T., Piccinni, G., Schneider, A., Howell, T.A., Jett, M., Dusek, D. 2006. Weighing lysimeters for the determination of crop water requirements and crop coefficients. Applied Engineering in Agriculture. 22:1-6.

Irrigated soybean evapotranspiration in a semi-arid environment. - (Abstract)

Howell, T.A., Evett, S.R., Tolk, J.A., Copeland, K.S., Colaizzi, P.D. 2006. Irrigated soybean evapotranspiration in a semi-arid environment. ASA-CSSA-SSSA Annual Meeting, November 12-16, 2006, Indianapolis, Indiana. 2006 CDROM.

Assessment of Sorghum Suitability in Ogallala Aquifer Region Based on Heat Unit Accumulation - (Abstract)

Angadi, S., Gowda, P., Howell, T.A. 2006. Assessment of sorghum suitability in Ogallala Aquifer region based on heat unit accumulation [abstract]. ASA-CSSA-SSSA Annual Meeting, November 12-16, 2006, Indianapolis, Indiana. 2006 CDROM.

A Geographic Profile of Manure Production and Antibiotic Use in the Ogallala Aquifer Region - (Abstract)

Gowda, P., Rice, W.C., Kumar, K., Howell, T.A. 2006. A geographic profile of manure production and antibiotic use in the Ogallala Aquifer region [abstract]. ASA-CSSA-SSSA Annual Meeting, November 12-16, 2006, Indianapolis, Indiana. 2006 CDROM.

Calculating crop water use in the northern Texas High Plains - (Abstract)

Marek, T., Howell, T.A., Porter, D. 2006. Calculating crop water use in the northern Texas High Plains. 2006 North Plains Ag Day Proceedings, Amarillo, Agricultural Research Center, August 9, 2006, Amarillo, Texas.

Calculating crop ET values when lysimeter data are not available. - (Abstract)

Marek, T., Colaizzi, P.D., Howell, T.A., Porter, D. 2006. Calculating crop ET values when lysimeter data are not available. 2006 North Plains Ag Day Proceedings, Amarillo Agricultural Research Center, August 9, 2006, Amarillo, Texas.

The Texas High Plains Evapotranspiration (TXHPET) network - (Abstract)

Porter, D., Marek, T., Howell, T.A. 2006. The Texas High Plains Evapotranspiration (TXHPET) network. 2006 North Plains Ag Day Proceedings, Amarillo Agricultural Research Center, August 9, 2006, Amarillo, Texas.

Sensitivity Analyses and Sensitivity Coefficients of Standardized Daily Asce-Penman-Monteith Equation - (Peer Reviewed Journal)

Irmak, S., Payero, J.O., Martin, D.L., Irmak, A., Howell, T.A. 2006. Sensitivity analyses and sensitivity coefficients of standardized daily ASCE-Penman-Monteith equation. Journal of Irrigation and Drainage Engineering. 132(6):564-578.

Comparison of Five Models to Scale Daily Evapotranspiration from One-Time-of-Day Measurements - (Peer Reviewed Journal)

Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A. 2006. Comparison of five models to scale daily evapotranspiration from one-time-of-day measurements. Transactions of the ASABE. 49(5):1409-1417.

Variability analyses of alfalfa-reference to grass-reference evapotranspiration ratios in growing and dormant seasons - (Peer Reviewed Journal) - (14-Jul-06)

Estimating seasonal crop ET using calendar and heat unit based crop coefficients in the Texas High Plains Evapotranspiration Network - (Proceedings/Symposium)

Marek, T., Colaizzi, P.D., Howell, T.A., Dusek, D., Porter, D. 2006. Estimating seasonal crop ET using calendar and heat unit based crop coefficients in the Texas High Plains Evapotranspiration Network. In: Proceedings of the ASABE Annual International Meeting, July 9-12, 2006, Portland, Oregon. 2006 CDROM. Paper No. 062206.

Crop emergence and near-surface soil temperature for SDI, LEPA, and spray irrigation - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2006. Crop emergence and near-surface soil temperature for SDI, LEPA, and spray irrigation. Paper Number 062278, 2006 ASAE Annual Meeting. Available: http://asae.frymulti.com/request.asp?search=1&JID=5&AID=22304&CID=por2006&T=2.

Sdi Bed Design Comparison for Soybean Emergence and Yield - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2006. SDI bed design comparison for soybean emergence and yield. In: Proceedings of the ASABE Annual International Meeting, July 9-12, 2006, Portland, Oregon. 2006 CDROM.

Irrigation Scheduling - (Book/Chapter)

Howell, T.A., Meron, M. 2006. Irrigation scheduling. In: Lamm, F.R., Ayars, J.E., Nakayama, F.S., editors. Microirrigation for Crop Production. Design, Operation, and Management. 1st edition. The Netherlands: Elsevier. p. 61-130.

Crop Simulation and Crop Evapotranspiration for Irrigation Management of Spinach - (Abstract)

Picinni, G., Gerik, T., Steglich, E., Leskovar, D., Ko, J., Marek, T., Howell, T.A. 2006. Crop simulation and crop evapotranspiration for irrigation management of spinach [abstract]. American Society of Horticulture Science Meeting, July 27-30, 2006, New Orleans, Louisiana. 41:971

Crop Emergence with Alternative Sdi Designs in a Pullman Clay Loam Soil - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2006. Crop emergence with alternative SDI designs in a Pullman Clay Loam soil. In: Proceedings of the 28th Annual Southern Conservation Systems Conference, June 26-28, 2006, Amarillo, Texas. p. 16.

Controlling Water Use Efficiency with Irrigation Automation: Cases from Drip and Center Pivot Irrigation of Corn and Soybean - (Proceedings/Symposium)

Evett, S.R., Peters, R.T., Howell, T.A. 2006. Controlling water use efficiency with irrigation automation: Cases from drip and center pivot irrigation of corn and soybean. In: Proceedings of the 28th Annual Southern Conservation Systems Conference, June 26-28, 2006, Amarillo, Texas. p. 57.

Supporting Efficient Irrigation Management Through the Texas High Plains Evapotranspiration Network - (Proceedings/Symposium)

Porter, D., Marek, T., Howell, T.A., Michaels, J., Dusek, D. 2006. Supporting efficient irrigation management through the Texas High Plains evapotranspiration network. In: Proceedings of the 28th Annual Southern Conservation Systems Conference, June 26-28, 2006, Amarillo, Texas. p. 241.

Soil Profile Water Content Determination: Sensor Accuracy, Axial Response, Calibration, Temperature Dependence, and Precision - (Peer Reviewed Journal)

Evett, S.R., Tolk, J.A., Howell, T.A. 2006. Soil profile water content determination: Sensor accuracy, axial response, calibration, temperature dependence, and precision. Vadose Zone Journal. 5:894-907.

Challenges in Increasing Water Use Efficiency in Irrigated Agriculture - (Proceedings/Symposium)

Howell, T.A. 2006. Challenges in increasing water use efficiency in irrigated agriculture. In: International Symposium on Water and Land Management for Sustainable Irrigated Agriculture, April 4-8, 2006, Adana, Turkey. p. 11.

Cotton Production with Sdi, Lepa, and Spray Irrigation in a Thermally-Limited Climate - (Trade Journal)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2006. Cotton production with SDI, LEPA, and spray irrigation in a thermally-limited climate. International Water & Irrigation. 26(1):10-12, 14.

Modeling to Evaluate Irrigation and Crop Management Strategies for Maximizing Grain Sorghum Yield and Water Use Efficiency - (Other)

Baumhardt, R.L., Tolk, J.A., Howell, T.A., Rosenthal, W.D. 2006. Modeling to evaluate irrigation and crop management strategies for maximizing grain sorghum yield and water use efficiency. In: 36th Biological Systems Simulation Conference, April 11-13, 2006, Fort Collins, Colorado. p. 25-26.

Soil Water Content Sampling in Space and Time: a Comparison of Methods - (Abstract)

Evett, S.R., Ruthardt, B.B., Mazahrih, N., Katbehbader, N., Howell, T.A., Tolk, J.A., Ayars, J.E. 2006. Soil water content sampling in space and time: A comparison of methods [abstract]. 18th World Congress of Soil Science. Paper No. 100-3.

Crop Coefficients Developed at Bushland, Texas for Corn, Wheat, Sorghum, Soybean, Cotton, and Alfalfa - (Proceedings/Symposium)

Howell, T.A., Evett, S.R., Tolk, J.A., Copeland, K.S., Dusek, D.A., Colaizzi, P.D. 2006. Crop coefficients developed at Bushland, Texas for corn, wheat, sorghum, soybean, cotton, and alfalfa. In: Proceedings of the World Water and Environmental Resources Congress. Examining the Confluence of Environmental and Water Concerns, May 21-25, 2006, Omaha, Nebraska. 2006 CDROM.

Concepts of in-Canopy and Near-Canopy Sprinkler Irrigation - (Proceedings/Symposium)

Lamm, F.R., Howell, T.A., Bordovsky, J.P. 2006. Concepts of in-canopy and near-canopy sprinkler irrigation. In: Proceedings of the World Water and Environmental Resources Congress. Examining the Confluence of Environmental and Water Concerns, May 21-25, 2006, Omaha, Nebraksa. 2006 CDROM.

Mapping Contrasting Tillage Practices in the Texas Panhandle with Landsat Thematic Mapper (Tm) Data - (Proceedings/Symposium)

Gowda, P., Peters, R.T., Howell, T.A. 2006. Mapping contrasting tillage practices in the Texas Panhandle with Landsat Thematic Mapper (TM) data. In: Proceedings of the World Water and Environmental Resources Congress. Examining the Confluence of Environmental and Water Concerns, May 21-25, 2006, Omaha, Nebraska. 2006 CDROM.

Evaluation of a Two-Source Energy Balance Model in An Advective Environment - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A., Li, F. 2006. Evaluation of a two-source energy balance model in an advective environment. In: Proceedings of the World Water and Environmental Resources Congress. Examining the Confluence of Environmental and Water Concerns, May 21-25, 2006, Omaha, Nebraska. 2006 CDROM.

Water Losses Associated with Center Pivot Nozzle Packages - (Proceedings/Symposium)

Howell, T.A. 2006. Water losses associated with center pivot nozzle packages. In: Proceedings of the Central Plains Irrigation Conference, February 21-22, 2006, Colby, Kansas. p. 11-24.

Crop Production Comparison under Various Irrigation Systems - (Proceedings/Symposium)

Colaizzi, P.D., Lamm, F.R., Howell, T.A., Evett, S.R. 2006. Crop production comparison under various irrigation systems. Proceedings of the Central Plains Irrigation Conference, February 21-22, 2006, Colby, Kansas. p. 189-207.

Nighttime Evaporation from Cotton and Alfalfa in a Semiarid Climate - (Peer Reviewed Journal)

Tolk, J.A., Howell, T.A., Evett, S.R. 2006. Nighttime evaporation from cotton and alfalfa in a semiarid climate. Agronomy Journal. 98:730-736.

Time Domain Reflectometry Calibration in Terms of Travel Time, Bulk Electrical Conductivity, and Effective Frequency - (Abstract)

Evett, S.R., Howell, T.A., Tolk, J.A. 2005. Time domain reflectometry calibration in terms of travel time, bulk electrical conductivity, and effective frequency [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Salt Lake City, Utah. 2005 CDROM.

Mapping Tillage Practices in Southern High Plains of Texas with Landsat Thematic Mapper Data - (Abstract)

Gowda, P., Peters, R.T., Howell, T.A., New, L. 2005. Mapping tillage practices in Southern High Plains of Texas with Landsat Thematic Mapper Data [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Salt Lake City, Utah. 2005 CDROM.

Nighttime Evapotranspiration from Alfalfa and Cotton in a Semiarid Environment - (Abstract)

Tolk, J.A., Evett, S.R., Howell, T.A. 2005. Nighttime evapotranspiration from alfalfa and cotton in a semiarid environment [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Salt Lake City, Utah. 2005 CDROM.

The Texas High Plains Evapotranspiration Network (Txhpet) User Manual - (Experiment Station)

Porter, D., Marek, T., Howell, T.A., New, L. 2005. The Texas High Plains (TXHPET) User Manual, Amarillo Research and Extension Center Report, AREC 05-37 Version 1.01, November 2005, Texas Agricultural Experiment Station, Amarillo, Texas.

The Texas High Plains Evapotranspiration Network-An Irrigation Scheduling Techology Transfer Tool - (Other)

Marek, T., Porter, D., Howell, T.A. 2005. The Texas High Plains evapotranspiration network-an irrigation scheduling techology transfer tool. The Texas Water Development Board (TWDB) Contract #2004-358-008. Completion Report.

Development of Phenological-Stage-Specific Crop Coefficients (Kc) to Manage Deficit Irrigation in Agricultural Production Systems - (Abstract)

Piccinni, G., Leskovar, D.I., Kolenda, K.A., Marek, T.H., Dusek, D.A., Howell, T.A. 2005. Development of phenological-stage-specific crop coefficients (Kc) to manage deficit irrigation in agricultural production systems. InterDrought-II, The 2nd International Conference on Integrated Approaches to Sustain and Improve Plant Production Under Drought Stress, September 24-28, 2005, Rome, Italy.

Lysimetric Evaluation of Single and Two-Source Energy Balance Models for Alfalfa, Grain Sorghum, and Cotton in the Southern High Plains - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A. 2005. Lysimetric evaluation of single- and two-source energy balance models for alfalfa, grain sorghum, and cotton in the Southern High Plains. In: Proceedings of the American Society of Civil Engineers-Environmental and Water Resources Institute, World Water and Environmental Resources Congress, May 15-19, 2005, Anchorage, Alaska. p. 1-13.

Time Domain Reflectometry Laboratory Calibration in Travel Time, Bulk Electrical Conductivity, and Effective Frequency - (Peer Reviewed Journal)

Evett, S.R., Howell, T.A., Tolk, J.A. 2005. Time domain reflectometry laboratory calibration in travel time, bulk electrical conductivity, and effective frequency. Vadose Zone Journal. 4:1020-1029.

Comparison of Five Models to Scale Daily Evapotranspiration from One-Time-of-Day Measurements - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A. 2005. Comparison of five models to scale daily evapotranspiration from one-time-of-day measurements. In: American Society of Agricultural Engineers Annual International Meeting Technical Papers, July 17-20, 2005, Tampa, Florida. Paper Number 052002. 2005 CDROM.

Models for Hydrologic Design of Evapotranspiration Landfill Covers - (Peer Reviewed Journal)

Hauser, V.L., Gimon, D.M., Bonta, J.V., Howell, T.A., Malone, R.W., Williams, J.R. 2005. Models for hydrologic design of evapotranspiration landfill covers. Journal of Environmental Science and Technology. 39(18):7226-7233.

An Evapotranspiration Research Facility for Soil-Plant-Environment Interactions - (Peer Reviewed Journal)

Tolk, J.A., Howell, T.A., Evett, S.R. 2005. An evapotranspiration research facility for soil-plant-environment interactions. Applied Engineering in Agriculture. 21(6):993-998.

Cotton Production with Sdi, Lepa, and Spray Irrigation in a Thermally-Limited Climate - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2005. Cotton production with SDI, LEPA, and spray irrigation in a thermally-limited climate. In: Irrigation Association Conference Proceedings, November 6-8, 2005, Phoenix, Arizona. 2005 CDROM.

A Recommendation on Standardized Surface Resistance for Hourly Calculation of Reference Eto by Fao56 Penman-Monteith Method - (Peer Reviewed Journal)

Allen, R.G., Pruitt, W.O., Wright, J.L., Howell, T.A., Ventura, F., Snyder, R., Itenfisu, D., Steduto, P., Berengena, J., Yrisarry, J.B., Smith, M., Pereira, L.S., Raes, D., Perrier, A., Alves, I., Walter, I., Elliott, R. 2006. A recommendation on standardized surface resistance for hourly calculation of reference ETO by FAO56 Penman-Monteith method. Agricultural Water Management. 81:1-22.

Standardized Asce Penman-Monteith: Impact of Sum-of-Hourly Vs. 24-Hour Timestep Computations at Reference Weather Station Sites - (Peer Reviewed Journal)

Irmak, S., Howell, T.A., Allen, R.G., Payero, J.O., Martin, D.L. 2005. Standardized ASCE Penman-Monteith: Impact of sum-of-hourly vs. 24-hour timestep computations at reference weather station sites. Transactions of the ASAE. 48(3):1063-1077.

Comparison of Spray, Lepa, and Sdi for Cotton and Grain Sorghum in the Texas Panhandle - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2005. Comparison of spray, LEPA, and SDI for cotton and grain sorghum in the Texas Panhandle. In: Proceedings of the Central Plains Irrigation Conference, February 16-17, 2005, Sterling, Colorado. p. 123-136.

Evapotranspiration of corn and forage sorghum for silage - (Proceedings/Symposium)

Howell, T.A., Evett, S.R., Tolk, J.A., Copeland, K.S., Colaizzi, P.D., Gowda, P. 2008. Evapotranspiration of corn and forage sorghum for silage. In: Proceedings of the Environmental and Water Resources Institute World Congress, May 12-16, 2008, Honolulu, Hawaii. 2008 CDROM.

Pathways to Effective Applications - (Proceedings/Symposium)

Howell, T.A., Evett, S.R. 2005. Pathways to effective applications. In: Proceedings of the Central Plains Irrigation Conference, February 16-17, 2005, Sterling, Colorado. p. 84-98.

Drip and Evaporation - (Review Article)

Evett, S.R., Colaizzi, P.D., Howell, T.A. 2005. Drip and evaporation. In: Proceedings of the Central Plains Irrigation Conference, February 16-17, 2005, Sterling, Colorado. p. 33-39.

Seeding Practices, Cultivar Maturity, and Irrigation Effects on Simulated Grain Sorghum Yield - (Peer Reviewed Journal)

Baumhardt, R.L., Howell, T.A. 2006. Seeding practices, cultivar maturity, and irrigation effects on simulated grain sorghum yield. Agronomy Journal. 98:462-470.

An Update and Status of the Ars-University Ogallala Aquifer Initiative - (Proceedings/Symposium)

Clark, R.N., Uphurch, D.R., Howell, T.A. 2004. An update and status of the ARS-University Ogallala Aquifer initiative. In: Rainwater, K.A., Zobeck, T.M. editors. 2004 High Plains Groundwater Resources: Challenges and Opportunities, December 7-9, 2004, Lubbock, Texas. p. 225-233.

Irrigation Methods and Capacities for Cotton in the Northern High Plains - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2004. Irrigation methods and capacities for cotton in the Northern High Plains. In: Rainwater, K.A. Editor. 2004 High Plains Groundwater Groundwater Resources: Challenges and Opportunities, Soil and Water Conservation Society, December 7-9, 2004, Lubbock, Texas. p. 154-163.

The Asce Standardized Reference Evapotranspiration Equation - (Book/Chapter)

Allen, R.G., Walter, I.A., Elliott, R.L., Howell, T.A., Itenfisu, D., Jensen, M.E., Snyder, R.L. 2005. The ASCE standardized reference evapotranspiration equation. Reston, VA:American Society of Civil Engineers. 59 p.

Development of An Agricultural Water Use Estimating Methodology - (Other)

Marek, T., Amosson, S., Muttiah, R., Almas, L., New, L., Howell, T.A., Bretz, F., Guerro, B., Simpson, N. 2004. Development of an agricultural water use estimating methodology. Prepared for Texas Water Development Board by Texas Agricultural Experiment Station and Texas Cooperative Extension in cooperation with U.S. Department of Agriculture, Agricultural Research Service.

Comparison of Sdi, Lepa, and Spray Irrigation Performance for Cotton in the North Texas High Plains - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A. 2004. Comparison of SDI, LEPA, and spray irrigation performance for cotton in the North Texas High Plains. In: Irrigation Association Conference Proceedings. 25th Annual International Irrigation Show, November 14-16. 2004, Tampa, Florida. p. 459-474.

Comparison of Aerodynamic and Radiometric Surface Temperature Using Precision Weighing Lysimeters - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A. 2004. Comparison of aerodynamic and radiometric surface temperature using precision weighing lysimeters. Proceedings of International Society for Optical Engineering. 5544:215-229.

Evaporation Research: Review and Interpretation - (Peer Reviewed Journal)

Burt, C.M., Mutziuger, A.J., Allen, R.G., Howell, T.A. 2005. Evaporation research: review and interpretation. Journal of Irrigation and Drainage Engineering. 131(1):37-58.

Comparison of Sdi, Lepa, and Spray Efficiency for Grain Sorghum - (Peer Reviewed Journal)

Colaizzi, P.D., Schneider, A.D., Howell, T.A., Evett, S.R. 2004. Comparison of SDI, LEPA, and spray efficiency for grain sorghum. Transactions of the ASAE. 47(5):1477-1492.

Comparison of Aerodynamic and Radiometric Surface Temperature Using Precision Weighing Lysimeters - (Proceedings/Symposium)

Colaizzi, P.D., Evett, S.R., Howell, T.A., Tolk, J.A. 2004. Comparison of aerodynamic and radiometric surface temperature using precision weighing lysimeters. In: Proceedings of the International Symposium on Optical Science and Technology, The International Society for Optical Engineering 49th Annual Meeting, August 2-6, 2004, Denver, Colorado. 5544:215-229.

Furrow Irrigated Cotton-Sorghum Rotation for the Texas Northern Plains - (Abstract)

Howell, T.A., Tolk, J.A., Baumhardt, R.L., Evett, S.R. 2004. Furrow irrigated cotton-sorghum rotation for the Texas northern plains [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Seattle, Wasghington. 2004 CDROM.

An Evapotranspiration Research Facility for Soil-Plant-Environment Interactions - (Abstract)

Tolk, J.A., Howell, T.A., Evett, S.R. 2004. An evapotranspiration research facility for soil-plant-environment interactions [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Seattle, Washington. 2004 CDROM.

Planting Rate Effects on Yield and Water Use of Irrigated Corn Hybrids with Different Maturities - (Abstract)

Payne, W.A., Howell, T.A., Balota, M. 2004. Planting rate effects on yield and water use of irrigated corn hybrids with different maturities [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Seattle, Washington. 2004 CDROM.

Contrasting Effects of Seeding Practices and Irrigation on Simulated Grain Sorghum Yield - (Abstract)

Baumhardt, R.L., Howell, T.A., Tolk, J.A. 2004. Contrasting effects of seeding practices and irrigation on simulated grain sorghum yield [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Seattle, Washington. 2004 CDROM.

Determination of Crop Coefficients and Water Use of Corn, Spinach and Onion - (Abstract)

Piccinni, G., Kolenda, K.A., Marek, T.H., Dusek, D.A., Howell, T.A., Leskovar, D.I. 2004. Determination of crop coefficients and water use of corn, spinach and onion [abstract]. Agronomy Abstracts, ASA-CSSA-SSSA Annual Meeting, Seattle, Washington. 2004 CDROM.

The Penman-Monteith Method - (Proceedings/Symposium)

Howell, T.A., Evett, S.R. 2004. The Penman-Monteith method. Section 3 in Evapotranspiration: Determination of Consumptive Use in Water Rights Proceedings. Continuing Legal Education in Colorado, Inc. Denver, CO.

Lysimetry - (Book/Chapter)

Howell, T.A. 2004. Lysimetry. In: Hillel, D., editor. Encyclopedia of Soils in the Environment. Oxford, UK: Elsevier Press. p. 379-386.

Deficit Irrigation, Seeding Practices, and Cultivar Maturity Effects on Simulated Grain Sorghum Yield - (Proceedings/Symposium)

Baumhardt, R.L., Howell, T.A. 2004. Deficit irrigation, seeding practices, and cultivar maturity effects on simulated grain sorghum yield. In: Biological Systems Simulation Conference, March 8-10, 2004, Gainesville, Florida. p. 13.

Sprinkler Package Water Loss Comparisons - (Proceedings/Symposium)

Howell, T.A. 2004. Sprinkler package water loss comparisons. Proceedings of the Central Plains Irrigation Short Course and Exposition. p. 53-68.

Estimating Grain Sorghum Production under Deficit Irrigation - (Experiment Station)

Baumhardt, R.L., Howell, T.A. 2004. Estimating grain sorghum production under deficit irrigation. Agricultural Experiment Station Publication. 4 p. Available: http://sorghum.tamu.edu/report_database/files/sub130hrby.BAUM_PRFT-03modl-rpt.pdf.

Transpiration-Driven Models for Crop Growth Simulation - (Abstract)

STOCKLE, C., KEMANIAN, A., HUGGINS, D.R., HOWELL, T.A. 2003. TRANSPIRATION-DRIVEN MODELS FOR CROP GROWTH SIMULATION. ANNUAL MEETING ABSTRACTS 2003. ASA-CSSA-SSSA, DENVER, CO. 2003 CDROM.

Determination of Crop Coefficients and Water Use of Corn - (Abstract)

PICCINNI, G., LAFFERE, M.K., KOLENDA, K.A., MAREK, T.H., DUSEK, D.A., HOWELL, T.A. 2003. DETERMINATION OF CROP COEFFICIENTS AND WATER USE OF CORN. ANNUAL MEETING ABSTRACTS 2003. ASA-CSSA-SSSA, DENVER, CO. 2003 CDROM.

Transpiration-Driven Models for Crop Growth Simulation - (Abstract)

Stockle, C., Kemanian, A., Huggins, D.R., Howell, T.A. 2003. Transpiration-driven models for crop growth simulation [abstract]. Agronomy Abstracts. Paper no.667382.

Evapotranspiration of Full-, Deficit-Irrigated and Dryland Cotton on the Northern Texas High Plains - (Peer Reviewed Journal)

Howell, T.A., Evett, S.R., Tolk, J.A., Schneider, A.D. 2004. Evapotranspiration of full-, deficit-irrigated and dryland cotton on the Northern Texas High Plains. Journal of Irrigation and Drainage Engineering. 130(4):277-285.

Predicting Daily Net Radiation Using Minimum Climatological Data - (Peer Reviewed Journal)

IRMAK, S., IRMAK, A., JONES, J.W., HOWELL, T.A., JACOBS, J.M., ALLEN, R.G., HOOGENBOOM, G. PREDICTING DAILY NET RADIATION USING MINIMUM CLIMATOLOGICAL DATA. JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING. 2003. V. 129(4). p. 256-269.

Comparison of Sdi, Lepa, and Spray Efficiency for Grain Sorghum - (Abstract)

Colaizzi, P.D., Schneider, A.D., Howell, T.A., Evett, S.R. 2003. Comparison of SDI, LEPA, and spray efficiency for grain sorghum [abstract]. American Society of Agricultural Engineers Meetings Papers. Paper No. 032139.

Irrigation Efficiency - (Book/Chapter)

HOWELL, T.A. IRRIGATION EFFICIENCY. STEWART, B.A., HOWELL, T.A., EDITORS. MARCEL-DEKKER, INC., NEW YORK, NY. ENCYCLOPEDIA OF WATER SCIENCE. 2003. P. 467-472.

Encyclopedia of Water Science - (Book/Chapter)

Stewart, B.A., Howell, T.A. 2003. Encyclopedia of Water Science. New York: Marcel-Dekker, Inc. 1076 P.

A Depth Control Stand for Improved Accuracy with the Neutron Probe - (Peer Reviewed Journal)

Evett, S.R., Tolk, J.A., Howell, T.A. 2003. A depth control stand for improved accuracy with the neutron probe. Vadose Zone Journal. 2:642-649.

Water Loss Comparison of Sprinkler Packages - (Proceedings/Symposium)

Howell, T.A. 2003. Water loss comparison of sprinkler packages. Proceedings of the Central Plains Irrigation Short Course and Exposition. p. 54-69.

Simulating Water Use of Irrigated Corn on the Texas High Plains - (Abstract)

GERIK, T.J., HOWELL, T.A., WILLIAMS, J.R., HARMAN, W.L., STEGLICH, E.M. SIMULATING WATER USE OF IRRIGATED CORN ON THE TEXAS HIGH PLAINS. CD-ROM. AGRONOMY ABSTRACTS. 2002.

Evapotranspiration of Full-, Deficit-Irrigated and Dryland Cotton on the Northern Texas High Plains - (Proceedings/Symposium) - (08-Aug-02)

Construction of Three Weighing Lysimeters for the Determination of Crop Coefficients for Improving Water Use Efficiency and Managing Irrigation of Row and Vegetable Crops in the Winter Garden - (Other)

Piccinni, G., Marek, T., Jett, M., Schneider, A.D., Dusek, D.A., Howell, T.A. 2002. Construction of three weighing lysimeters for the determination of crop coefficients for improving water use efficiency and managing irrigation of row and vegetable crops in the winter garden. Uvalde Research and Extension Center, Uvalde, Texas. UREC-02/019.

New Ideas for Improving Irrigation Water Use Efficiency - (Abstract) - (01-Apr-02)