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United States Department of Agriculture

Agricultural Research Service

Related Topics

Heidi M Waldrip
Renewable Energy and Manure Management Research
Research Soil Scientist

Phone: (806) 356-5764
Fax: (806) 356-5750
Room 6
CONSERVATION & PRODUCTION RESEARCH LAB
P.O. DRAWER 10 (2300 EXPERIMENT STATION RD-SHIP)
BUSHLAND, TX, 79012

Projects
DEVELOP TECHNOLOGIES TO PROTECT AIR QUALITY, MAINTAIN PRODUCTION EFFICIENCY & ENHANCE USE OF MANURE FROM SOUTHN GREAT PLAINS BEEF & DAIRY AG
Appropriated (D)
  Accession Number: 419829

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Process-based modeling of ammonia emission from beef cattle feedyards with the integrated farm systems model - (Peer Reviewed Journal) - (19-Mar-14)
Methane emissions from a beef cattle feedyard during winter and summer on the southern High Plains of Texas - (Peer Reviewed Journal) - (19-Mar-14)
Greenhouse gas emissions from cattle systems: factors affecting emissions and mitigation strategies - (Abstract Only)
Cole, N.A., Todd, R.W., Waldrip, H., Hales Paxton, K.E. 2014. Greenhouse gas emissions from cattle systems: factors affecting emissions and mitigation strategies. Alberta Institute of Agrologists Annual Conference, April 1-3,2014, Banff, Canada. 1;6636.
Feed management for beef feedlots to reduce air emissions - (Other) - (22-Jan-14)
Characterization of organic matter in beef feedyard manure by Ultraviolet-Visible and Fourier transform infrared spectroscopies - (Peer Reviewed Journal)
Waldrip, H., He, Z., Todd, R.W., Hunt, J.F., Rhoades, M.B., Cole, N.A. 2014. Characterization of organic matter in beef feedyard manure by Ultraviolet-Visible and Fourier transform infrared spectroscopies. Journal of Environmental Quality. 43:690-700.
Characterization of organic matter in beef feedyard manure by ultraviolet-visible and Fourier transform infrared spectroscopies - (Abstract Only)
Waldrip, H., He, Z., Todd, R.W., Hunt, J.F., Rhoades, M.B., Cole, N.A. 2014. Characterization of organic matter in beef feedyard manure by ultraviolet-visible and Fourier transform infrared spectroscopies. ASA-CSSA-SSSA Annual Meeting Abstracts. poster number 1105.
Effects of long-term poultry litter application on inorganic and enzyme hydrolyzable P of Texas Blackland Vertisol - (Abstract Only)
Pagliari, P., Waldrip, H., He, Z., Harmel, R.D., Zhang, M. 2013. Effects of long-term poultry litter application on inorganic and enzyme hydrolyzable P of Texas Blackland Vertisol. ASA-CSSA-SSSA Annual Meeting Abstracts. poster number 1016.
Impact of management practices on water extractable organic carbon and nitrogen from a poultry litter-amended soil - (Abstract Only)
Zhang, M., He, Z., Waldrip, H., Pagliari, P., Harmel, R.D. 2013. Impact of management practices on water extractable organic carbon and nitrogen from a poultry litter-amended soil. ASA-CSSA-SSSA Annual Meeting Abstracts. poster number 2733.
Phoshatase activities and their effects on phosphorus availability in soils amended with livestock manures - (Book / Chapter) - (09-Sep-13)
Soil Enzyme Activities as Affected by Manure Types, Application Rates and Management Practices - (Book / Chapter) - (09-Sep-13)
Greenhouse gas emissions from beef cattle feedlot pen surfaces in Texas during fall - (Abstract Only)
Casey, K.D., Vaddella, V., Waldrip, H., Todd, R.W., Faulkner, W.B. 2013. Greenhouse gas emissions from beef cattle feedlot pen surfaces in Texas during fall. Biological Engineering (ASABE). 1:1620819.
Prediction of nitrogen excretion by beef cattle: a meta-analysis - (Peer Reviewed Journal)
Waldrip, H., Todd, R.W., Cole, N.A. 2013. Prediction of nitrogen excretion by beef cattle: a meta-analysis. Journal of Animal Science. 91:4290-4302.
Estimation of ammonia emissions from beef cattle feedyards using process-based model manure-dndc - (Peer Reviewed Journal)
Waldrip, H., Todd, R.W., Cole, N.A., Li, C., Salas, W. 2013. Estimation of ammonia emissions from beef cattle feedyards using process-based model manure-dndc. Transactions of the ASABE. 56(3):1103-1114.
Process models vs empirical models - (Proceedings)
Waldrip, H. 2013. Process models vs empirical models. Western Dairy Air Quality Symposium. 1:1.
Ammonia emissions from open lot dairies: lessons learned from beef cattle feedyards - (Proceedings)
Todd, R.W., Cole, N.A., Auvermann, B.W., Waldrip, H. 2013. Ammonia emissions from open lot dairies: lessons learned from beef cattle feedyards. Western Dairy Air Quality Symposium. 1:1.
Estimation of ammonia emissions from two commercial beef cattle feedyards in the southern high plains with process-based models - (Proceedings)
Waldrip, H., Rotz, C.A., Li, C., Todd, R.W., Salas, W.G., Cole, N.A. 2013. Estimation of ammonia emissions from two commercial beef cattle feedyards in the southern high plains with process-based models. Proceedings of the National Conference on Livestock and Poultry Environmental quality; from Waste to Worth:spreading science and solutions. 1:85.
Nutrient management and environmental and societal issues affecting sustainability of feedlot finishing systems - (Abstract Only)
Cole, N.A., Todd, R.W., Waldrip, H., Hales Paxton, K.E., Macdonald, J.C. 2013. Nutrient management and environmental and societal issues affecting sustainability of feedlot finishing systems. American Society of Animal Science meeting, Indianapolis, Indiana, July 9-13, 2013. Journal of Animal Science, 91:E-Supplement 2.
Ammonia emissions and emission factors: a summary of investigations at beef cattle feedyards on the southern high plains - (Proceedings)
Todd, R.W., Cole, N.A., Waldrip, H. 2013. Ammonia emissions and emission factors: a summary of investigations at beef cattle feedyards on the southern high plains. 2013 Livestock and Poultry Environmental Learning Center Conference Waste to Worth. 1:86.
Arrhenius equation for modeling feedyard ammonia emissions using temperature and diet crude protein - (Peer Reviewed Journal)
Todd, R.W., Cole, N.A., Aiken, R.M., Waldrip, H. 2013. Arrhenius equation for modeling feedyard ammonia emissions using temperature and diet crude protein. Journal of Environmental Quality. 42(3):666-671. doi:10.2134/jeq2012.0371.
Estimation of ammonia emissions from two commercial beef cattle feedyards in the southern high plains with process-based modeling. - (Abstract Only)
Waldrip, H., Rotz, C.A., Li, C., Todd, R.W., Salas, W.G., Cole, N.A. 2013. Estimation of ammonia emissions from two commercial beef cattle feedyards in the southern high plains with process-based modeling.2013 Livestock and Poultry Environmental Learning Center Conference, Waste to Worth. 1:91.
Analysis of carbon functional groups in mobile humic acid and recalcitrant calcium humate extracted from eight US soils - (Peer Reviewed Journal)
He, Z., Cao, X., Mao, J., Ohno, T., Waldrip, H.M. 2013. Analysis of carbon functional groups in mobile humic acid and recalcitrant calcium humate extracted from eight US soils. Pedosphere. 23(6):705-716.
Effects of organic dairy manure of soil phosphatase activity, available soil phosphorus and growth of sorghum-sudangrass - (Peer Reviewed Journal)
Waldrip, H., He, Z., Griffin, T.S. 2012. Effects of organic dairy manure of soil phosphatase activity, available soil phosphorus and growth of sorghum-sudangrass. Soil Science. 177(11):629-637.
Effects of organic dairy manure amendment on soil phosphatase activities - (Abstract Only)
Waldrip, H., Griffin, T.S., He, Z. 2012. Effects of organic dairy manure amendment on soil phosphatase activities. ASA-CSSA-SSSA Annual Meeting Abstracts. 1:1.
Estimation of ammmonia emissions from beef cattle feedyards in the Southern Plains with process-based modeling - (Abstract Only)
Waldrip, H., Todd, R.W., Cole, N.A., Li, C., Salas, W.H., Rotz, C.A. 2012. Estimation of ammmonia emissions from beef cattle feedyards in the Southern Plains with process-based modeling. ASA-CSSA-SSSA Annual Meeting Abstracts. 1:1.
Characterization of ammonium sorption by beef feedyard manure - (Peer Reviewed Journal)
Waldrip, H., Todd, R.W., Cole, N.A. 2012. Characterization of ammonium sorption by beef feedyard manure. Transactions of the ASABE. 55(4):1609-1619.
Estimation of ammonia emissions from beef cattle feedyards in the southern high plains with process-based modeling - (Abstract Only) - (17-May-12)
Capillary electrophoresis application in metal speciation and complexation characterization - (Book / Chapter)
Wang, Y., He, Z., Waldrip, H.M. 2012. Capillary electrophoresis application in metal speciation and complexation characterization. In: He, Z., editor. Capillary Electrophoresis: Fundamentals, Techniques and Applications. New York, NY:Nova Science. p. 117-130.
Application of capillary electrophoresis in agricultural and soil chemistry research - (Book / Chapter)
He, Z., Waldrip, H.M., Yun, W. 2012. Application of capillary electrophoresis in agricultural and soil chemistry research. In: He, Z., editor. Capillary Electrophoresis: Fundamentals, Techniques and Applications. New York, NY:Nova Science. p. 131-151.
Impacts of humic product application on yields of potato and other field crops - (Abstract Only)
Olk, D.C., Mosa, A.M., Waldrip, H. 2011. Impacts of humic product application on yields of potato and other field crops. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
Effect of Poultry Manure Amendment on Soil Phosphatase Activity - (Abstract Only)
Waldrip, H., He, Z., Erich, M., Honeycutt, C.W. 2008. Effect of Poultry Manure Amendment on Soil Phosphatase Activity. Soil Science Society of America Annual Meeting. October 2008. CD-ROM.
Enzymatic Quantification of Phytate in Animal Manure - (Peer Reviewed Journal)
He, Z., Waldrip, H., Erich, M., Honeycutt, C.W., Senwo, Z.N. 2009. Enzymatic Quantification of Phytate in Animal Manure. Communications in Soil Science and Plant Analysis. 40:566-575.
Soil Phosphorus Dynamics in Response to Poultry Manure Amendment - (Abstract Only)
Waldrip Dail, H.M., He, Z., Erich, M., Honeycutt, C.W. 2007. Soil Phosphorus Dynamics in Response to Poultry Manure Amendment. Soil Science Society of America Annual Meeting. CD-ROM
Enzymatic Quantification of Phytate in Poultry Manure - (Abstract Only)
He, Z., Waldrip Dail, H.M., Erich, M., Honeycutt, C.W., Senwo, Z.N. 2007. Enzymatic Quantification of Phytate in Poultry Manure. International Symposium on Soil and Plant Analysis. Page 54
Effects of Drying on Phosphorus Distribution in Poultry Manure - (Peer Reviewed Journal)
Waldrip Dail, H.M., He, Z., Erich, M.S., Honeycutt, C.W. 2007. Effects of drying on phosphorus distribution in poultry manure. Communications in Soil Science and Plant Analysis. 38:1879-1895
Last Modified: 4/20/2014
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