Projects

UNDERSTANDING PHOSPHORUS CHEMISTRY IN MANURE AND SOIL AND THEIR INTERACTIONS TO TREAT AND CONTROL PHOSPHORUS MOVEMENT IN THE ENVIRONMENT Appropriated (D)   Accession Number: 409655

ENHANCING DIETARY PHYTASE ENZYMES PRODUCTION, UTILIZATION IN ANIMAL NUTRITION AND WASTE MANAGEMENT TECHNOLOGIES TO REDUCE ENVIRONMENTAL IMPA Reimbursable (R)   Accession Number: 410341

EVALUATE AND OPTIMIZE DIETARY PHYTASE ENZYMES UTILIZATION IN POULTRY NUTRITION Specific Cooperative Agreement (S)   Accession Number: 413050

EVALUATE AND OPTIMIZE DIETARY PHYTASE ENZYMES PRODUCTION AND UTILIZATION IN ANIMAL NUTRITION Specific Cooperative Agreement (S)   Accession Number: 411315

Publications

Relationships Between Immobilized Phosphorus Uptake in Two Grain Legumes and Soil Bioactive P Pools in Fertilized and Manure-Amended Soil - (Peer Reviewed Journal)

Rao, S.C., Dao, T.H. 2008. Relationships Between Immobilized Phosphorus Uptake in Two Grain Legumes and Soil Bioactive P Pools in Fertilized and Manure-Amended Soil. Agronomy Journal. 100:xx-xx.

Loss of Bioactive Phosphorus and Enteric Bacteria in Runoff from Dairy Manure Applied to Sod - (Peer Reviewed Journal)

Dao, T.H., Guber, A.K., Sadeghi, A.M., Karns, J.S., Van Kessel, J.S., Shelton, D.R., Pachepsky, Y.A., Mccarty, G.W. 2008. Loss of Bioactive Phosphorus and Enteric Bacteria in Runoff from Dairy Manure Applied to Sod. Soil Science. 173:511-521.

Dephosphorylation and Quantification of Organic Phosphorus in Poultry Litter by Purified Phytic-Acid High Affinity Aspergillus Phosphohydrolases - (Peer Reviewed Journal)

Dao, T.H., Hoang, K.Q. 2008. Dephosphorylation and Quantification of Organic Phosphorus in Poultry Litter by Purified Phytic-Acid High Affinity Aspergillus Phosphohydrolases. Chemosphere. 72:1782-1787. (http://dx.doi.org/10.1016/j.chemosphere.2008.04.048)Chemosphere.

Modeling Phosphorus in the Environment Review - (Review Article)

Dao, T.H. 2008. Review of Modeling Phosphorus in the Environment. Soil Science Society of America Journal. 72(2):278.

RAPID COMPOSITION AND SOURCE SCREENING OF HETEROGENEOUS POULTRY LITTER BY ENERGY DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY - (Peer Reviewed Journal)

Dao, T.H., Zhang, H. 2007. Rapid composition and source screening of heterogeneous poultry litter by energy dispersive x-ray fluorescence spectrometry. Annals of Environmental Science. 1:69-79.

Bioactive Phosphorus Loss in Simulated Runoff From a P-Enriched Soil Under Two Forage Management Systems - (Peer Reviewed Journal)

Green, V.S., Dao, T.H., Stone Jr, G.N., Cavigelli, M.A., Baumhardt, R.L., Devine, T.E. 2007. Bioactive Phosphorus Loss in Simulated Runoff From a P-Enriched Soil Under Two Forage Management Systems. Soil Science. 172:721-732.

Determination of Phosphorus Retention and Flux in Soil - (Book/Chapter)

Dao, T.H. 2008. Determination of Phosphorus Retention and Flux in Soil, pp. 65-70. In: Kovar, J. and Pierzinski, G. (eds). Methods of P Analysis for Soils, Sediments, Residuals, and Waters. Rev. Edition.

Determining Bioactive Phosphorus Fractions in Animal Manure, Soil, and Extracts of Soils and Manures - (Book/Chapter)

Dao, T.H. 2008. Determining Bioactive Phosphorus Fractions in Animal Manure, Soil, and Extracts of Soils and Manures. pp. 86-93. In: Kovar, J. and Pierzinski, G. (eds). Methods of P Analysis for Soils, Sediments, Residuals, and Waters. Rev. Edition.

COMPARISON OF RELEASE AND TRANSPORT OF MANURE-BORNE E. COLI AND ENTEROCOCCI UNDER GRASS BUFFER CONDITIONS - (Peer Reviewed Journal)

Guber, A.K., Karns, J.S., Pachepsky, Y.A., Sadeghi, A.M., Van Kessel, J.S., Dao, T.H. 2007. Comparison of release and transport of manure-borne E. coli and Enterococci under grass buffer conditions. Letters in Applied Microbiology. 44(2):161-167.

TRANSPORT AND FATE OF MANURE-BORNE PATHOGENS: MODELING PERSPECTIVE - (Peer Reviewed Journal)

Pachepsky, Y.A., Sadeghi, A.M., Bradford, S.A., Shelton, D.R., Guber, A.K., Dao, T.H. 2006. Transport and fate of manure-borne pathogens: modeling perspective. Agricultural Water Management. Online-(doi:10.1016/j.agwat.2006.06.0l0.)

MANAGING PHOSPHORUS-ENRICHED SOILS: EFFECTS OF IRON AMENDMENT ON TEMPORAL DYNAMICS OF BIOACTIVE PHOSPHORUS POOLS - (Abstract)

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].

SOIL AND NUTRIENT EROSION RISK IN ORGANIC AND CONVENTIONAL CROPPING SYSTEMS - (Abstract)

Green, V.S., Cavigelli, M.A., Dao, T.H., Flanagan, D.C. 2006. Soil and nutrient erosion risk in organic and conventional cropping systems. World Congress of Soil Science, July 9-15, 2006, Philadelphia, PA, No. 59-5 [CD-ROM].

PHOSPHORUS FRACTIONS AND DYNAMICS AMONG SOIL AGGREGATE SIZE CLASSES OF ORGANIC AND CONVENTIONAL CROPPING SYSTEMS - (Peer Reviewed Journal)

Green, V.S., Dao, T.H., Cavigelli, M.A., Flanagan, D.C. 2006. Phosphorus fractions and dynamics among soil aggregate size classes of organic and conventional cropping systems. Soil Science. 171:874-885.

LIGAND EFFECTS ON PHYTIC ACID IN ANIMAL MANURES: ASSESSING TIME DEPENDENCE OF INOSITOL PHOSPHATE SOLUBILIZATION AND BIOACTIVITY - (Book/Chapter)

Dao, T.H. 2006. Ligand effects on phytic acid in animal manures: assessing time dependence of inositol phosphate solubilization and bioactivity. In: Turner, B.L., Richardson, A.E., Mullaney, E.J., editors. Inositol Phosphates: Linking Agriculture and Environment. CAB International, Oxfordshire, UK. p. 169-185.

LETTER TO THE EDITOR - (Other)

Green, V.S., Cavigelli, M.A., Dao, T.H., Flanagan, D.C. 2006. Letter to the editor. Care needed in comparisons. Bioscience. 56:461.

DIFFERENCES IN RELEASE AND TRANSPORT OF MANURE-BORNE E. COLI AND ENTEROCOCCI IN GRASS BUFFER CONDITIONS - (Abstract)

Guber, A.A., Karns, J.S., Pachepsky, Y.A., Sadeghi, A.M., Van Kessel, J.S., Dao, T.H. 2006. Differences in release and transport of manure-borne E. coli and Enterococci in grass buffer conditions. ASA-CSSA-SSSA International Meeting, November 12-16, 2006, Indianapolis, Indiana. CD-ROM.

EFFECT OF LIME, PHOSPHORUS AND IRON ON LEAD AND ARSENIC SOLUBILITY IN LEAD-ARSENATE CONTAMINATED ORCHARD SOILS - (Peer Reviewed Journal)

Codling, E.E., Dao, T.H. 2007. Effect of lime, phosphorus and iron on lead and arsenic solubility in lead-arsenate contaminated orchard soils. Communications in Soil Science and Plant Analysis. 38:903-919.

INVESTIGATIONS INTO THE POTENTIAL OF NEAR- AND MID-INFRARED DIFFUSE REFLECTANCE SPECTROSCOPY FOR DETERMINING P IN DAIRY MANURES - (Abstract)

Reeves Iii, J.B., Dao, T.H., Reeves, V.B. 2006. Investigations into the potential of near- and mid-infrared diffuse reflectance spectroscopy for determining p in dairy manures [abstract]. Proceedings of Pittcon Meeting. Paper No. 1220-4P.

DIFFERENTIATING FORMS AND POTENTIAL BIOACTIVITY OF ENVIRONMENTAL PHOSPHORUS - (Proceedings/Symposium)

Dao, T.H. 2005. Differentiating forms and potential bioactivity of environmental phosphorus. In: Proceedings of the Environmental Remediation Approaches to Municipal and Industrial Pollution in Vietnam Conference, October 25-26, 2005, Ho Chi Minh City, Vietnam. p. 148-156.

REMEDIATION OF NUTRIENT-ENRICHED SOILS FOLLOWING REPEATED APPLICATIONS OF ANIMAL MANURE - (Proceedings/Symposium)

Dao, T.H. 2005. Remediation of nutrient-enriched soils following repeated applications of animal manure. In: Proceedings of the Environmental Remediation Approaches to Municipal and Industrial Pollution in Vietnam Conference, October 25-26, 2005, Ho Chi Minh City, Vietnam. pp. 136-147.

TIME DEPENDENT BIOACTIVE PHOSPHORUS EXTRACTABILITY IN CALCIUM- AND IRON-TREATED SOILS - (Abstract)

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.

INSOLUBLE Fe-RELATED INORGANIC AND ORGANIC PHOSPHATES IN ANIMAL MANURE AND SOIL - (Peer Reviewed Journal)

He, Z., Dao, T.H., Honeycutt, C.W. 2006. Insoluble fe-related inorganic and organic phosphates in animal manure and soil. Soil Science. 171:117-126

WASTEWATER CHEMISTRY AND FRACTIONATION OF BIOACTIVE PHOSPHORUS IN DAIRY MANURE - (Peer Reviewed Journal)

Dao, T.H., Lugo-Ospina, A., Reeves Iii, J.B., Zhang, H. 2006. Wastewater chemistry and fractionation of bioactive phosphorus in dairy manure. Communications in Soil Science and Plant Analysis. 37:907-924.

LIGAND EFFECTS ON PHYTIC ACID IN ANIMAL MANURES - (Abstract)

Dao, T.H. 2005. Ligand effects on phytic acid in animal manures. [abstract].Bouyoucos Conference Proceedings. p. 33.

AGGREGATE ASSOCIATED CARBON, NITROGEN, AND PHOSPHORUS DYNAMICS - (Abstract)

Green, V.S., Dao, T.H., Cavigelli, M.A., Flanagan, D.C. 2005. Aggregate associated carbon, nitrogen, and phosphorus dynamics [abstract]. American Society of Agronomy Meetings [CDROM]. Poster No. 285-17.

CHARACTERIZING BIOACTIVE PHOSPHORUS OF SOIL AGGREGATES IN CONVENTIONAL AND MANURE-BASED CROPPING SYSTEMS - (Peer Reviewed Journal)

Green, V.S., Dao, T.H., Cavigelli, M.A. 2005. Characterizing bioactive phosphorus of soil aggregates in conventional and manure-based cropping systems. In: C.J. Li et al. (eds). Plant Nutrition for Food Security, Human Health, and Environmental Protection. Tsinghua University Press, Beijing, China. p. 1166-1167.

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.

SOIL PHYSICAL PROPERTIES AND AGGREGATE ASSOCIATED C, N, AND P IN ORGANIC AND CONVENTIONAL CROPPING SYSTEMS - (Peer Reviewed Journal)

Green, V.S., Cavigelli, M.A., Dao, T.H., Flanagan, D.C. 2005. Soil physical properties and aggregate associated c, n, and p in organic and conventional cropping systems. Soil Science. 170:822-831

DIRECT 31P NMR SPECTROSCOPIC MEASUREMENT OF PHOSPHOROUS FORMS IN DAIRY MANURES - (Peer Reviewed Journal)

Jayasundera, S., Schmidt, W.F., Reeves Iii, J.B., Dao, T.H. 2005. Direct 31p nmr spectroscopic measurement of phosphorous forms in dairy manures. International Journal of Food, Agriculture, and the Environment. 3(2):335-340.

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.

PHOSPHORUS FRACTIONS IN AGGREGATES OF ORGANIC AND CONVENTIONAL CROPPING SYSTEMS - (Abstract)

Green, V.S., Dao, T.H., Cavigelli, M.A., Flanagan, D.C. 2004. Phosphorus fractions in aggregates of organic and conventional cropping systems [abstract]. American Society of Agronomy Annual Meeting Abstracts [CDROM]. No. 4279.

RELEASE OF INSOLUBLE ORGANIC PHOSPHATE IN ANIMAL MANURE BY PHYTASE UNDER REDUCING CONDITIONS - (Abstract)

He, Z., Dao, T.H., Honeycutt, C.W. 2004. Release of insoluble organic phosphate in animal manure by phytase under reducing conditions. American Society of Agronomy Meetings. Seattle, WA. November 2004. CD-ROM

EVALUATION OF QUICK TESTS FOR DISSOLVED PHOSPHORUS DETERMINATION IN DAIRY MANURES - (Peer Reviewed Journal)

Lugo-Ospina, A., Dao, T.H., Van Kessel, J.S., Reeves III, J.B. 2005. Evaluation of quick tests for dissolved phosphorus determination in dairy manures. Environmental Pollution. 135:155-162.

LIGAND-BASED ENZYMATIC FRACTIONATION OF BIOACTIVE PHOSPHORUS IN DAIRY MANURE: FAST AND TIME-DEPENDENT PROCESSES - (Abstract)

Dao, T.H., Reeves III, J.B., Zhang, H. 2004. Ligand-based enzymatic fractionation of bioactive phosphorus in dairy manure: fast and time-dependent processes [abstract]. American Society of Agronomy. Annual Meeting Abstracts CDROM No. 5217.

SEEDBED SURFACE GEOMETRY EFFECTS ON SOIL CRUSTING AND SEEDLING EMERGENCE - (Peer Reviewed Journal)

Baumhardt, R.L., Dao, T.H., Unger, P.W. 2004. Seedbed surface geometry effects on soil crusting and seedling emergence. Agronomy Journal. 96:1112-1117.

REDUCING THE MOBILIZATION OF ORGANIC PHOSPHORUS IN DAIRY WASTEWATERS: CHEMISTRY AND ROLE OF ACTIVE AND INTERMEDIATE POOLS - (Proceedings/Symposium)

Dao, T.H., Reeves III, J.B., Zhang, H. 2004. Reducing the mobilization of organic phosphorus in dairy wastewaters: chemistry and role of active and intermediate pools. In: Chardon, W.J. and G.F. Koopmans (eds.), Critical Evaluation of Options for Reducing Phosphorus Loss from Agriculture. Fourth International Phosphorus Workshop Proceedings 2004:14.

LIGANDS AND PHYTASE HYDROLYSIS OF ORGANIC PHOSPHORUS IN SOILS AMENDED WITH DAIRY MANURE - (Peer Reviewed Journal)

Dao, T.H. 2004. Ligands and phytase hydrolysis of organic phosphorus in soils amended with dairy manure. Agronomy Journal. 96(4):1188-1195.

PARTICULATE AND DISSOLVED PHOSPHORUS CHEMICAL SEPARATION AND PHOSPHORUS RELEASE FROM TREATED DAIRY MANURE - (Trade Journal)

Dao, T.H., Daniel, T.C. 2003. Particulate and dissolved phosphorus chemical separation and phosphorus release from treated dairy manure: Continuing Education Self-Study Course. Certified Crop Advisor AgProfessional 12/2003:37-41. http://www.agprofessional.com.

CROPPING SYSTEM EFFECT ON DISTRIBUTION OF C, N, AND P AMONG AGGREGATE SIZE CLASSES - (Abstract)

Green, V.S., Cavigelli, M.A., Dao, T.H., Flanagan, D.C. 2003. Cropping system effect on distribution of C, N, and P among aggregate size classes [abstract]. American Society of Agronomy Annual Meeting Abstracts [CDROM]. A08-green642204-Poster.

HOW DIETARY PHYTASES CAN INCREASE MANURE ORGANIC PHOSPHORUS MOBILIZATION - (Abstract)

Dao, T.H. 2003. How dietary phytases can increase manure organic phosphorus mobilization [abstract]. American Society of Agronomy Annual Meeting Abstracts CD-ROM. No. S11-dao381545-P.

EVALUATION OF QUICK TESTS FOR DISSOLVED PHOSPHORUS DETERMINATION IN DAIRY MANURES - (Abstract)

Reeves III, J.B., Lugo-Ospina, A., Dao, T.H., Van Kessel, J.S. 2003. Evaluation of quick tests for dissolved phosphorus determination in dairy manures. [abstract]. American Society of Agronomy Abstracts. Annual Meeting Abstracts. November 2-6, 2003. No. A05-reeves921387-P.

ORGANIC LIGAND EFFECTS ON MYO-INOSITOL HEXAKIS DIHYDROGENPHOSPHATE ENZYMATIC DEPHOSPHORYLATION IN DAIRY WASTEWATER - (Peer Reviewed Journal)

DAO, T.H. 2004. Organic ligant effects on the enzymatic dephosphorylation of myo-inositol hexakis dihydrogenphosphate in dairy wastewater. Journal of Environmental Quality. 33(1):349-358.

COMPETITIVE ANION SORPTION EFFECTS ON DAIRY WASTEWATER DISSOLVED PHOSPHORUS EXTRACTION WITH ZEOLITE-BASED SORBENTS - (Peer Reviewed Journal)

Dao, T.H. 2003. Competitive anion sorption effects on dairy wastewater dissolved phosphorus extraction with zeolite-based sorbents. International Journal of Food, Agriculture, and the Environment. 1(3):263-269.

PARTICLE DESTABILIZATION AND REMOVAL FROM CONCENTRATED DAIRY MANURE SUSPENSIONS - (Proceedings/Symposium)

DAO, T.H. 2003. PARTICLE DESTABILIZATION AND REMOVAL FROM CONCENTRATED DAIRY MANURE SUSPENSIONS. CHAPTER 17-4. PROCEEDINGS OF JOINT RESIDUALS AND BIOSOLIDS MANAGEMENT. SPECIALTY CONFERENCE: PARTNERING FOR A SAFE SUSTAINABLE ENVIRONMENT, FEB. 19-21, 2003. BALTIMORE, MD. CD-ROM No. 0330. WATER ENVIRONMENT FEDERATION, ARLINGTON, VA.

REDUCING PARTICULATE AND DISSOLVED PHOSPHORUS IN DAIRY MANURE SUSPENSIONS - (Abstract)

DAO, T.H., DANIEL, T.C. 2002. REDUCING PARTICULATE AND DISSOLVED PHOSPHORUS IN DAIRY MANURE SUSPENSIONS. AGRONOMY ABSTRACTS. CD-ROM No 511-DAO170030-P.

ALTERNATIVE TREATMENT TECHNOLOGIES FOR CONTROLLING BIOAVAILABLE PHOSPHORUS IN ANIMAL MANURE - (Abstract)

DAO, T.H. 2002. ALTERNATIVE TREATMENT TECHNOLOGIES FOR CONTROLLING BIOAVAILABLE PHOSPHORUS IN ANIMAL MANURE. AGRONOMY ABSTRACTS. CD-ROM No A05-dao171859-0.

SOIL CARBON SEQUESTRATION POTENTIAL OF CONSERVATION TILLAGE SYSTEMS - (Abstract)

SCHOMBERG, H.H., ALLMARAS, R.R., DOUGLAS JR, C.L., DAO, T.H. SOIL CARBON SEQUESTRATION POTENTIAL OF CONSERVATION TILLAGE SYSTEMS. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2002.

IMPROVING GLOBAL-SCALE LAND COVER CLASSIFICATION WITH MULTI-DIRECTIONAL VIEA-ANGLE DATA AND A DECISION TREE CLASSIFIER - (Proceedings/Symposium) - (15-Apr-02)

ENZYMATIC HYDROLYSIS OF ORGANIC PHOSPHORUS IN ANIMAL MANURE - (Abstract) - (29-Mar-02)