Bonifacio, H.F., Rotz, C.A., Leytem, A.B., Waldrip, H., Todd, R.W. 2015. Process-based modeling of ammonia and nitrous oxide emissions from open lot beef and dairy facilities. Transactions of the ASABE. 58:827-846.
Waldrip, H., Cole, N.A., Todd, R.W. 2015. Nitrogen sustainability and beef cattle feedyards: introduction and influence of pen surface conditions and diet. The Professional Animal Scientist 2015. 31:89-100 doi:10.15232/pas.2014-01361
He, Z., Waldrip, H. 2015. Composition of whole and water extractable organic matter of cattle manure affected by management practices. In: Zhonggi, H., Fengchang, W., editors. Labile Organic Matter - Chemical Compositions, Function, and Significance in Soil and the Environment, SSSA Special Publication 62. Madison, WI: Soil Science Society of America. doi:10.2136/sssaspecpub62.2014.0034.
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.
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.
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.
Waldrip, H., Acosta Martinez, V. 2014. Phoshatase activities and their effects on phosphorus availability in soils amended with livestock manures. In: He, Z., Zhang, H., editors. Applied Manure and Nutrient Chemistry for Sustainable Agriculture and Environment. New York, NY: Springer Science+Media Dordrecht. p. 123-140.
Acosta Martinez, V., Waldrip, H. 2014. Soil enzyme activities as affected by manure types, application rates and management practices. In: He, Z. and Zhang, H., editors. Applied Manure and Nutrient Chemistry for Sustainable Agriculture and Environment. New York, NY: Springer Science+Business Media Dordrecht. p. 99-122.
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.
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.
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.
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.
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.
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.
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.
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.
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.