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United States Department of Agriculture

Agricultural Research Service

April B Leytem
Research Soil Scientist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Impacts of dietary forage and crude protein levels on the shedding of Escherichia coli O157:H7 and Listeria in dairy cattle feces -
Biswas, S., Niu, M., Appuhamy, J., Leytem, A.B., Dungan, R.S., Kebreab, E., Pandey, P. 2016. Impacts of dietary forage and crude protein levels on the shedding of Escherichia coli O157:H7 and Listeria in dairy cattle feces. Livestock Science. 194:17-22.
Nutritional and environmental effects on ammonia emissions from dairy cattle housing: A meta-analysis Reprint Icon -
Bougouin, A., Leytem, A.B., Dijkstra, J., Dungan, R.S., Kebreab, E. 2016. Nutritional and environmental effects on ammonia emissions from dairy cattle housing: A meta-analysis. Journal of Environmental Quality. 45:1123-1132.
Winter and growing season nitrogen mineralization from fall-applied composted or stockpiled solid dairy manure Reprint Icon -
Lehrsch, G.A., Brown, B., Lentz, R.D., Johnson-Maynard, J.L., Leytem, A.B. 2016. Winter and growing season nitrogen mineralization from fall-applied composted or stockpiled solid dairy manure. Nutrient Cycling in Agroecosystems. 104:125-142.
Recovery of culturable of Escherichia coli O157:H7 during operation of a liquid-based bioaerosol sampler Reprint Icon -
Dungan, R.S., Leytem, A.B. 2016. Recovery of culturable of Escherichia coli O157:H7 during operation of a liquid-based bioaerosol sampler. Aerosol Science and Technology. 50(1):71-75.
Effect of dietary crude protein and forage contents on enteric methane emissions and nitrogen excretion from dairy cows simultaneously Reprint Icon -
Niu, M., Appuhamy, J., Leytem, A.B., Dungan, R.S., Kebreab, E. 2016. Effect of dietary crude protein and forage contents on enteric methane emissions and nitrogen excretion from dairy cows simultaneously. Animal Production Science. 56:312-321.
Reactive nitrogen emissions from agricultural operations -
Rotz, C.A., Leytem, A.B. 2015. Reactive nitrogen emissions from agricultural operations. EM Magazine (September):12-16.
Detection of purple sulfur bacteria in purple and non-purple dairy wastewaters Reprint Icon -
Dungan, R.S., Leytem, A.B. 2015. Detection of purple sulfur bacteria in purple and non-purple dairy wastewaters. Journal of Environmental Quality. 44:1550-1555.
Process-based modeling of ammonia and nitrous oxide emissions from open lot beef and dairy facilities -
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.
Ammonia and nitrous oxide model for open lot cattle production systems -
Bonifacio, H.F., Rotz, C.A., Leytem, A.B., Waldrip, H., Todd, R.W. 2015. Ammonia and nitrous oxide model for open lot cattle production systems{Abstract}. Waste to Worth. p 72819.
Compost and manure effects on sugarbeet nitrogen uptake, nitrogen recovery, and nitrogen use efficiency Reprint Icon -
Lehrsch, G.A., Brown, B., Lentz, R.D., Johnson-Maynard, J.L., Leytem, A.B. 2015. Compost and manure effects on sugarbeet nitrogen uptake, nitrogen recovery, and nitrogen use efficiency. Agronomy Journal. 107(3):1155-1166.
Sugarbeet yield and quality when substituting compost or manure for conventional nitrogen fertilizer Reprint Icon -
Lehrsch, G.A., Brown, B., Lentz, R.D., Johnson-Maynard, J.L., Leytem, A.B. 2014. Sugarbeet yield and quality when substituting compost or manure for conventional nitrogen fertilizer. Agronomy Journal. 107(1):221-231.
Phosphorus losses from an irrigated watershed in the Northwestern U.S.: Case study of the Upper Snake Rock Watershed Reprint Icon -
Bjorneberg, D.L., Leytem, A.B., Ippolito, J.A., Koehn, A.C. 2015. Phosphorus losses from an irrigated watershed in the Northwestern U.S.: Case study of the Upper Snake Rock Watershed. Journal of Environmental Quality. 44:552-559.
Livestock GRACEnet: A workgroup dedicated to evaluating and mitigating emissions from livestock production -
Leytem, A.B., Dungan, R.S. 2014. Livestock GRACEnet: A workgroup dedicated to evaluating and mitigating emissions from livestock production. Journal of Environmental Quality. 43(4):1101-1110.
Chapter 5: Quantifying greenhouse gas sources and sinks in animal production systems -
Powers, W., Auvermann, B., Cole, N.A., Gooch, C., Grant, R., Hatfield, J.L., Hunt, P.G., Johnson, K., Leytem, A.B., Liao, W., Powell, J.M. 2014. Chapter 5: Quantifying greenhouse gas sources and sinks in animal production systems. Government Publication/Report. Chapter 5: 31-160.
Feed management practices to reduce manure phosphorus excretion in dairy cattle Reprint Icon -
Kebreab, E., Hansen, A.V., Leytem, A.B. 2013. Feed management practices to reduce manure phosphorus excretion in dairy cattle. Advances in Animal Biosciences. 4(s1):37-41.
The characterization of microorganisms in dairy wastewater storage ponds Reprint Icon -
Dungan, R.S., Leytem, A.B. 2013. The characterization of microorganisms in dairy wastewater storage ponds. Journal of Environmental Quality. 42:1583-1588.
Feeding low-phytic acid corn grain to finishing wethers does not alter phosphorus digestion -
Taylor, J.B., Leytem, A.B., Raboy, V. 2013. Feeding low-phytic acid corn grain to finishing wethers does not alter phosphorus digestion. Journal of Animal Science Supplement. 64:392-395.
Comparison of atmospheric stability methods for calculating ammonia and methane emission rates with WindTrax Reprint Icon -
Koehn, A.C., Leytem, A.B., Bjorneberg, D.L. 2013. Comparison of atmospheric stability methods for calculating ammonia and methane emission rates with WindTrax. Transactions of the ASABE. 56(2):763-768.
Increasing the quantitative credibility of open-path FT-IR spectroscopic data with focus on several properties of the background spectrum Reprint Icon -
Shao, L., Wang, W., Griffiths, P.R., Leytem, A.B. 2013. Increasing the quantitative credibility of open-path FT-IR spectroscopic data with focus on several properties of the background spectrum. Journal of Applied Spectroscopy. 67(3):335-341.
US agricultural nitrous oxide emissions: context, status, and trends Reprint Icon -
Cavigelli, M.A., Del Grosso, S.J., Liebig, M.A., Snyder, C.S., Fixen, P.E., Venterea, R.T., Leytem, A.B., McLain, J.E., Watts, D.B. 2013. US agricultural nitrous oxide emissions: context, status, and trends. Frontiers in Ecology and the Environment. 10:537-546.
Quantification of bacterial indicators and zoonotic pathogens in dairy wastewater ponds -
Dungan, R.S., Klein, M., Leytem, A.B. 2012. Quantification of bacterial indicators and zoonotic pathogens in dairy wastewater ponds. Applied and Environmental Microbiology. 78(22):8089-8095.
Greenhouse gas and ammonia emissions from an open-freestall dairy in Southern Idaho Reprint Icon -
Leytem, A.B., Dungan, R.S., Bjorneberg, D.L., Koehn, A.C. 2013. Greenhouse gas and ammonia emissions from an open-freestall dairy in Southern Idaho. Journal of Environmental Quality. 42:10-20.
Analysis of total metals in waste molding and core sands from ferrous and non-ferrous foundries -
Miguel, R.E., Ippolito, J.A., Leytem, A.B., Porta, A.A., Banda Noriega, R.B., Dungan, R.S. 2012. Analysis of total metals in waste molding and core sands from ferrous and non-ferrous foundries. Journal of Environmental Management. 110:77-81.
Sustainable Manure Management -
Leytem, A.B., Dungan, R.S., Kleinman, P.J. 2014. Sustainable Manure Management. In: Kebreab, E., editor. Sustainable Animal Agriculture. Oxfordshire, United Kingdom: CAB International. p. 83-112.
Effect of sprinkler pressure and spray plate on culturable microorganism concentrations during simulated irrigation of dairy wastewater -
Dungan, R.S., Bjorneberg, D.L., Leytem, A.B. 2011. Effect of sprinkler pressure and spray plate on culturable microorganism concentrations during simulated irrigation of dairy wastewater. Transactions of the ASABE. 54(5):1669-1673.
Nutrient availability to corn from dairy manures and fertilizer in a calcareous soil -
Leytem, A.B., Dungan, R.S., Moore, A. 2011. Nutrient availability to corn from dairy manures and fertilizer in a calcareous soil. Soil Science. 170:426-434.
Residual effects of fresh and composted dairy manure applications on potato production -
Moore, A.D., Olsen, N.L., Carey, A.M., Leytem, A.B. 2011. Residual effects of fresh and composted dairy manure applications on potato production. American Journal of Potato Research. Available: http://www.springerlink.com/content/ek7858uj37088r50/fulltext.html.
Concentrations of airborne endotoxin and microorganisms at a 10,000 cow open-freestall dairy -
Dungan, R.S., Leytem, A.B., Bjorneberg, D.L. 2011. Concentrations of airborne endotoxin and microorganisms at a 10,000 cow open-freestall dairy. Journal of Animal Science. 89:3300-3309.
Using multiple calibration sets to improve the quantitative accuracy of partial least squares (PLS) regression on open-path fourier transform infrared (OP/FT-IR) spectra of ammonia over wide concentration ranges -
Shao, L., Liu, B., Griffiths, P.R., Leytem, A.B. 2011. Using multiple calibration sets to improve the quantitative accuracy of partial least squares (PLS) regression on open-path fourier transform infrared (OP/FT-IR) spectra of ammonia over wide concentration ranges. Applied Spectroscopy. 65(7):820-824.
Sheep bedding in the Centennial Mountains of Montana and Idaho: effects on vegetation -
Seefeldt, S.S., Leytem, A.B. 2011. Sheep bedding in the Centennial Mountains of Montana and Idaho: effects on vegetation. Western North American Naturalist. 71(3):361-373.
Phosphorus and nitrogen loading depths in fluvial sediments following manure spill simulations Reprint Icon -
Armstrong, S.D., Smith, D.R., Owens, P.R., Joern, B.C., Leytem, A.B., Huang, C., Adeola, L. 2011. Phosphorus and nitrogen loading depths in fluvial sediments following manure spill simulations. Canadian Journal of Soil Science. 91:427-436.
Dairy manure nitrogen availability in eroded and noneroded soil for sugarbeet followed by small grains -
Lentz, R.D., Lehrsch, G.A., Brown, B., Johnson-Maynard, J., Leytem, A.B. 2011. Dairy manure nitrogen availability in eroded and noneroded soil for sugarbeet followed by small grains. Agronomy Journal. 103:628-643.
Hydrological effects of sheep bedding on subalpine range. Reprint Icon -
Moffet, C.A., Leytem, A.B., Pierson Jr, F.B. 2010. Hydrological effects of sheep bedding on subalpine range. Proceedings of the 63rd Annual Meeting of the Society Range Management, February 7-11, 2010, Denver, Colorado. P A-68.
Advances in Data Processing for Open-path Fourier Transform Infrared Spectrometry of Greenhouse Gases -
Shao, L., Griffiths, P.R., Leytem, A.B. 2010. Advances in Data Processing for Open-path Fourier Transform Infrared Spectrometry of Greenhouse Gases. Analytical Chemistry. 82(19):8027-8033.
Ambient Endotoxin Concentrations and Assessment of Offsite Transport at Open-Lot and Open-Freestall Dairies. -
Dungan, R.S., Leytem, A.B. 2011. Ambient Endotoxin Concentrations and Assessment of Offsite Transport at Open-Lot and Open-Freestall Dairies.. Journal of Environmental Quality. 40(2):462-467.
Nutrient concentrations and proportions in particle size fractions of corn steam flaked to different bulk densities -
Hales, K.E., Cole, N.A., Galyean, M.L., Leytem, A.B. 2010. Nutrient concentrations and proportions in particle size fractions of corn steam flaked to different bulk densities. Professional Animal Scientist. 26(5):511-519.
Emissions of Ammonia, Methane, Carbon Dioxide and Nitrous Oxide From Dairy Cattle Housing and Manure Management Systems Reprint Icon -
Leytem, A.B., Dungan, R.S., Bjorneberg, D.L., Koehn, A.C. 2011. Emissions of Ammonia, Methane, Carbon Dioxide and Nitrous Oxide From Dairy Cattle Housing and Manure Management Systems. Journal of Environmental Quality. 40(5):1383-1394.
Phosphorus Utilization and Characterization of Excreta From Swine Fed Diets Containing A Variety of Cereal Grains Balanced For Total Phosphorus Reprint Icon -
Leytem, A.B., Thacker, P.A. 2010. Phosphorus Utilization and Characterization of Excreta From Swine Fed Diets Containing A Variety of Cereal Grains Balanced For Total Phosphorus. Journal of Animal Science. 88:1860-1867.
Assessment of bioaerosols at a concentrated dairy operation -
Dungan, R.S., Leytem, A.B., Ver Wey, S.A., Bjorneberg, D.L. 2010. Assessment of Bioaerosols at a Concentrated Dairy Operation. Aerobiologia. 26(3):171-184 Available: 1372.
Year-long assessment of airborne endotoxin at a concentrated dairy operation -
Dungan, R.S., Leytem, A.B., Bjorneberg, D.L. 2010. Year-Long Monitoring of Airborne Endotoxin at a Concentrated Dairy Operation. Aerobiologia. 26:141-148.
Transport and Fate of Phosphorus During and After Manure Spill Simulations Reprint Icon -
Armstrong, S.D., Smith, D.R., Joern, B.C., Owens, P.R., Leytem, A.B., Huang, C., Adeola, L. 2010. Transport and Fate of Phosphorus During and After Manure Spill Simulations. Journal of Environmental Quality. 39:345-352.
Measurement of atmospheric ammonia, methane, and nitrous oxide at a concentrated dairy production facility in Southern Idaho using open-path FT-IR spectrometry Reprint Icon -
Leytem, A.B., Bjorneberg, D.L., Westermann, D.T., Griffiths, P.R., Shao, L., Pollard, M.J. 2009. Measurement of atmospheric ammonia, methane, and nitrous oxide at a concentrated dairy production facility in Southern Idaho using open-path FT-IR spectrometry. Transactions of the ASABE. 52(5):1749-1756.
Measurement of atmospheric ammonia, methane, and nitrous oxide at a concentrated dairy production facility in southern Idaho using open-path FT-IR spectrometry -
Bjorneberg, D.L., Leytem, A.B., Westermann, D.T., Griffiths, P.R., Shao, L., Pollard, M.J. 2009. Measurement of Atmospheric Ammonia, Methane, and Nitrous Oxide at a Concentrated Dairy Production Facility in Southern Idaho Using Open-path FT-IR Spectrometry. Transactions of the ASABE. 52(5):1749-1756.
Case study: Seasonal and Spatial Distribution of Ambient Ammonia Concentrations Measured at a Large Open-Lot Dairy Reprint Icon -
Leytem, A.B., Dungan, R.S., Bjorneberg, D.L. 2009. Case study: Seasonal and Spatial Distribution of Ambient Ammonia Concentrations Measured at a Large Open-Lot Dairy. The Professional Animal Scientist. 25:786-793.
The effect of extraction, storage, and analysis techniques on the measurement of airborne endotoxin from a large dairy -
Dungan, R.S., Leytem, A.B. 2009. The Effect of Extraction, Storage, and Analysis Techniques on the Measurement of Airborne Endotoxin From a Large Dairy. Aerobiologia. 25:265-273.
Phosphorus Adsorption and Desorption During and After Swine Manure Spill Simulations -
Armstrong, S.D., Smith, D.R., Joern, B.C., Owens, P.R., Leytem, A.B., Huang, C., Adeola, L. 2009. Phosphorus Adsorption and Desorption During and After Swine Manure Spill Simulations [abstract]. SERA-IEG 17 Bulletin. July 28-31, 2009, Windsor, Ontario, Canada. 2009 CDROM.
Changes in soil test phosphorus and phosphorus in runoff from calcareous soils receiving manure, compost, and fertilizer application with and without alum Reprint Icon -
Leytem, A.B., Bjorneberg, D.L. 2009. Changes in Soil Test Phosphorus and Phosphorus in Runoff From Calcareous Soils Receiving Manure, Compost, and Fertilizer Application With and Without Alum. Soil Science. 174(8):445-455.
The characterization and composition of bacterial communities in soils blended with spent foundry sand -
Dungan, R.S., Kim, J., Weon, H., Leytem, A.B. 2009. The Characterization and Composition of Bacterial Communities in Soils Blended with Spent Foundry Sand. Annals of Microbiology. 59(2):239-246.
Qualitative and quantitative methodologies for determination of airborne microorganisms at concentrated animal-feeding operations -
Dungan, R.S., Leytem, A.B. 2009. Qualitative and Quantitative Methodologies for Determination of Airborne Microorganisms at Concentrated Animal-feeding Operations. World Journal of Microbiology and Biotechnology. 25:1505-1518.
Crude protein, ash, phosphorus, neutral detergent fiber and starch concentrations in particle size distributions of corn steam flaked to varying bulk densities -
Hales, K.E., Cole, N.A., Leytem, A.B., Galyean, M.L. 2009. Crude protein, ash, phosphorus, neutral detergent fiber and starch concentrations in particle size distributions of corn steam flaked to varying bulk densities [abstract]. 2009 Plains Nutrition Council Spring Conference, April 9-10, 2009, San Antonio, Texas. Texas AgriLife Research & Extension Pub. No. AREC 09-18. p. 94.
Airborne endotoxin concentrations at a large open-lot dairy in southern Idaho -
Dungan, R.S., Leytem, A.B. 2009. Airborne endotoxin concentrations at a large open-lot dairy in southern Idaho. Journal of Environmental Quality. 38:1919-1923.
Optimizing the extraction, storage, and analysis of airborne endotoxins -
The effects of phytase supplementation on performance and phosphorus excretion from broiler chickens fed low phosphorus-containing diets based on normal or low-phytic acid barley -
Thacker, P.A., Haq, I., Willing, B.P., Leytem, A.B. 2009. The effects of phytase supplementation on performance and phosphorus excretion from broiler chickens fed low phosphorus-containing diets based on normal or low-phytic acid barley. Asian-Australasian Journal of Animal Sciences. 22(3):404-409.
Phosphorus mobility in soil columns treated with dairy manures and commercial fertilizer -
Tarkalson, D.D., Leytem, A.B. 2009. Phosphorus mobility in soil columns treated with dairy manures and commercial fertilizer. Soil Science. 174(2):73-80.
Case Study: On-Farm Evaluation of Liquid Dairy Manure Application Methods to Reduce Ammonia Losses Reprint Icon -
Leytem, A.B., Bjorneberg, D.L., Sheffield, R.E., De Haro Marti, M.E. 2009. Case Study: On-Farm Evaluation of Liquid Dairy Manure Application Methods to Reduce Ammonia Losses. The Professional Animal Scientist. 25:93-98.
Completely automated open-path FT-IR spectrometry -
Griffiths, P.R., Shao, L., Leytem, A.B. 2008. Completely automated open-path FT-IR spectrometry. Analytical and Bioanalytical Chemistry. 393(1):45-50.
Phosphorus utilization and characterization of ileal digesta and excreta from broiler chickens fed diets varying in cereal grain, phosphorus level, and phytase addition -
Leytem, A.B., Widyaratne, G.P., Thacker, P.A. 2008. Phosphorus utilization and characterization of ileal digesta and excreta from broiler chickens fed diets varying in cereal grain, phosphorus level, and phytase addition. Poultry Science. 87(12):2466-2476.
Nutrient excretion, phosphorus characterization, and phosphorus solubility in excreta from broiler checks fed diets containing graded levels of wheat distillers grains with solubles -
Leytem, A.B., Kwanyuen, P., Thacker, P. 2008. Nutrient excretion, phosphorus characterization, and phosphorus solubility in excreta from broiler checks fed diets containing graded levels of wheat distillers grains with solubles. Poultry Science. 87(12):2505-2511.
Impact of sheep bedding on soil nutrient dynamics in the Centennial Mountains of Montana and Idaho -
Leytem, A.B., Seefeldt, S.S. 2008. Impact of sheep bedding on soil nutrient dynamics in the Centennial Mountains of Montana and Idaho. Soil Science. 173(8):503-510.
Fecal phosphorus excretion and characterization from swine fed diets containing a variety of cereal grains -
Leytem, A.B., Thacker, P.A. 2008. Fecal phosphorus excretion and characterization from swine fed diets containing a variety of cereal grains. Animal Feed Science And Technology. 7(2):113-120.
Interaction of calcium and phytate in broiler diets: 1. Effects on apparent prececal digestibility and retention of phosphorus -
Plumstead, P.W., Leytem, A.B., Spears, J.W., Maguire, R.O., Kwanyuen, P., Brake, J. 2008. Interaction of calcium and phytate in broiler diets: 1. Effects on apparent prececal digestibility and retention of phosphorus. Poultry Science. 87:449-458.
Phytate utilization and phosphorus excretion by broiler chickens fed diets containing cereal grains varying in phytate and phytase content -
Leytem, A.B., Willing, B.P., Thacker, P.A. 2008. Phytate utilization and phosphorus excretion by broiler chickens fed diets containing cereal grains varying in phytate and phytase content. Animal Feed Science and Technology. 146:160-168.
Interaction of calcium and phytate in broiler diets: 2. Effects on total and soluble phosphorus excretion -
Leytem, A.B., Plumstead, P.W., Maguire, R.O., Kwanyuen, P., Burton, J.W., Brake, J. 2008. Interaction of calcium and phytate in broiler diets: 2. Effects on total and soluble phosphorus excretion. Poultry Science. 87:459-467.
Evaluation of Phosphorus Characterization in Broiler Ileal Digesta, Manure, and Litter Samples: 31P-NMR vs. HPLC -
Leytem, A.B., Kwanyuen, P., Plumstead, P.W., Maguire, R., Brake, J. 2008. Evaluation of Phosphorus Characterization in Broiler Ileal Digesta, Manure, and Litter Samples: 31P-NMR vs. HPLC. Journal of Environmental Quality 37:494-500.
Evaluation of Phosphorus Characterization in Ileal Digesta, Manure, and Litter Samples: 31P-NMR vs. HPLC -
Leytem, A.B., Kwanyuen, P., Plumstead, P.W., Maguire, R.O., Brake, J. 2008. Evaluation of Phosphorus Characterization in Ileal Digesta, Manure, and Litter Samples: 31P-NMR vs. HPLC. Journal of Environmental Quality. 37:494-500.
SELECTION OF A WATER EXTRACTABLE PHOSPHORUS TEST FOR MANURES AND BIOSOLIDS AS AN INDICATOR OF RUNOFF LOSS POTENTIAL -
Kleinman, P.J., Sullivan, D., Wolf, A., Brandt, R., Dou, Z., Elliott, H., Kovar, J.L., Leytem, A.B., Maguire, R., Moore Jr, P.A., Sharpley, A.N., Shober, A., Sims, T., Toth, J., Toor, G., Zhang, H., Zhang, T., Saporito, L.S. 2007. Selection of a Water-Extractable Phosphorus Test for Manures and Biosolids as an Indicator of Runoff Loss Potential. Journal of Environmental Quality. 36(5):1357-1367.
ENVIRONMENTAL IMPLICATIONS OF INOSITOL PHOSPHATES IN ANIMAL MANURES -
Leytem, A.B., Maguire, R.D. 2007. Environmental implications of inositol phosphates in animal manures. In: Turner, B.L., Richardson, A.E., Mullaney, E.J., editors. Inositol Phosphates: Linking Agriculture and the Environment. 1st edition. Cambridge, MA:CAB International. p. 150-168.
What aspect of dietary modification in broilers controls litter water soluble P: dietary phosphorus, phytase, or calcium? -
Leytem, A.B., Plumstead, P.W., Maguire, R.O., Kwanyuen, P., Brake, J. 2007. What aspect of dietary modification in broilers controls litter water soluble P: Dietary phosphorus, phytase, or calcium? Journal of Environmental Quality. 36:453-463.
THE EFFECT OF LOW-PHYTATE MUTANT-M 995 BARLEY GRAIN ON PHYTATE DEGRADATION AND MINERAL DIGESTION IN SHEEP FED HIGH-GRAIN DIETS. -
Leytem, A.B., Taylor, J.B., Raboy, V., Plumstead, P.W. 2007. Dietary low-phytate mutant-M 955 barley grain alters phytate degradation and mineral digestion in sheep fed high-grain diets. Animal Feed Science and Technology. 138:13-28.
Phosphorus characterization in feces from broiler chicks fed low-phytate barley diets -
Leytem, A.B., Thacker, P.A., Turner, B.L. 2007. Phosphorus characterization in feces from broiler chicks fed low-phytate barley diets. Journal of the Science of Food and Agriculture. 87:1495-1501.
Nutrient Losses from Manure and Fertilizer Applications as Impacted by Time to First Runoff Event -
Smith, D.R., Owens, P.R., Leytem, A.B., Pappas, E.A. 2007. Nutrient Losses from Manure and Fertilizer Applications as Impacted by Time to First Runoff Event. Environmental Pollution. 14:131-137.
STANDARDIZING THE WATER-SOLUBLE PHOSPHORUS TEST FOR MANURES AND BIOSOLIDS -
Sullivan, D., Kleinman, P.J., Wolf, A., Brandt, R., Dou, Z., Elliott, H., Kovar, J.L., Leytem, A.B., Maguire, R., Moore Jr, P.A., Sharpley, A.N., Shober, A., Sims, J.T., Toor, G., Zhang, H., Zhang, T. 2006. Standardizing the water-soluble phosphorus test for manures and biosolids. ASA-CSSA-SSSA Annual Meeting Abstracts.
THE INFLUENCE OF MANURE PHYTIC ACID ON PHOSPHORUS SOLUBILITY IN CALCAREOUS SOILS -
Leytem, A.B., Smith, D.R., Applegate, T.J., Thacker, P.A. 2006. The influence of manure phytic acid on phosphorus solubility in calcareous soils. Soil Science Society of America Journal. 70(5):1629-1638.
DAIRY MANURE/COMPOST N RELEASE FOR SUGARBEETS AND SUBSEQUENT WHEAT -
Brown, B., Johnson-Maynard, J., Leytem, A.B., Lentz, R.D., Lehrsch, G.A. 2006. Dairy manure/compost n release for sugarbeets and subsequent wheat. Proceedings of the Idaho Nutrient Management Conference. III:13-18.
INFLUENCE OF SOLID DAIRY MANURE AND COMPOST WITH AND WITHOUT ALUM ON SURVIVAL OF INDICATOR BACTERIA IN SOIL AND ON POTATO -
Entry, J.A., Leytem, A.B., Verwey, S.A. 2005. Influence of solid dairy manure and compost with and without alum on survival of indicator bacteria in soil and on potato. Environmental Pollution. 138:212-218.
LINKING MANURE PROPERTIES TO SOIL PHOSPHORUS SOLUBILITY: IMPORTANCE OF THE CARBON TO PHOSPHORUS RATIO -
Leytem, A.B., Turner, B.L., Raboy, V., Peterson, K.L. 2005. Linking manure properties to phosphorus solubility in calcareous soils: Importance of the manure carbon to phosphorus ratio. Soil Science Society of America Journal. 69:1516-1524.
LINKING MANURE PROPERTIES TO SOIL PHOSPHORUS SOLUBILITY: IMPORTANCE OF THE CARBON TO PHOSPHORUS RATIO -
Leytem, A.B., Turner, B.L., Raboy, V. 2005. Linking manure properties to soil phosphorus solubility: importance of the carbon to phosphorus ratio. Soil Science Society of America Journal. 69:1516-1524.
PHOSPHORUS AVAILABILITY TO BARLEY FROM MANURES AND FERTILIZERS ON A CALCAREOUS SOIL -
Leytem, A.B., Westermann, D.T. 2005. Phosphorus availability to barley from manures and fertilizers on a calcareous soil. Soil Science. 170(6):401-412.
PHOSPHORUS AVAILABILITY TO BARLEY FROM MANURES AND FERTILIZERS ON A CALCAREOUS SOIL -
Leytem, A.B., Westermann, D.T. 2005. Phosphorus availability to barley from manures and fertilizers on a calcareous soil. Soil Science. 170(6):401-412.
TECHNOLOGIES TO MINIMIZE WATER QUALITY IMPACTS OF IRRIGATED AGRICULTURE -
Bjorneberg, D.L., Sojka, R.E., Leytem, A.B. 2005. Technologies to minimize water quality impacts of irrigated agriculture. In: Proceedings of the World Water and Environmental Resources Congress, May 15-19, 2005, Anchorage, Alaska. 2005 CDROM.
Changes in soil test phosphorus from broiler litter additions -
Leytem, A.B., Sims, J.T. 2006. Changes in soil test phosphorus from broiler litter additions. Communications in Soil Science and Plant Analysis. 36:2541-2559.
CHANGES IN SOIL TEST PHOSPHORUS FROM BROILER LITTER ADDITIONS. -
Leytem, A.B., Sims, J.T. 2006. Changes in soil test phosphorus from broiler litter additions. Communications in Soil Science and Plant Analysis. 36:2541:2559.
THE NATURE OF PHOSPHORUS IN CALCAREOUS SOILS -
Leytem, A.B., Mikkelsen, R.L. 2005. The nature of phosphorus in calcareous soils. Better Crops. 89(2):11-13.
PHOSPHORUS LOSS WITH SURFACE IRRIGATION -
Bjorneberg, D.L., Leytem, A.B. 2005. Phosphorus loss with surface irrigation. In: Walker, F., Russell, W., Dagnan, G., Dalton, A., editors. Phosphorus Best Management Practices: Protecting Water Quality. USDA-NRCS Fact Sheet. Available: http://www.sera17.ext.vt.edu/SERA_17_Publications.htm.
PHOSPHORUS COMPOUNDS IN SEQUENTIAL EXTRACTS OF ANIMAL MANURES: CHEMICAL SPECIATION AND A NOVEL FRACTIONATION PROCEDURE -
Turner, B.L., Leytem, A.B. 2004. Phosphorus compounds in sequential extracts of animal manures: Chemical speciation and a novel fractionation procedure. Environmental Science and Technology. 38:6101-6108.
PHOSPHORUS COMPOSITION OF MANURE FROM SWINE FED LOW-PHYTATE GRAINS: EVIDENCE FOR HYDROLYSIS IN THE ANIMAL -
Leytem, A.B., Turner, B.L. 2004. Effect of feeding low phytate barleys on manure phosphorus forms in swine. Journal of Environmental Quality. 33:380-2383.
VIRGINIA PHOSPHORUS INDEX EVALUATION - PANEL REPORT -
Sharpley, A.N., Beegle, D., Jokela, W., Kleinman, P.J., Leytem, A.B., Maguire, R., Myers, J., Weld, J.L. 2004. An evaluation of the Virginia Phosphorus Index. Final Report to USDA-NRCS, Virginia State Office, 1606 Santa Rosa Blvd., Suite 209, Richmond, VA. 30 p.
DETERMINATION OF PHOSPHORUS SOURCE COEFFICIENTS FOR ORGANIC PHOSPHORUS SOURCES: LABORATORY STUDIES -
Leytem, A.B., Sims, J.T., Coale, F.J. 2004. Determination of phosphorus source coefficients for organic phosphorus sources: laboratory studies. Journal of Environmental Quality. 33:380-388.
SORPTION OF ORGANIC PHOSPHORUS COMPOUNDS IN ATLANTIC COASTAL PLAIN SOILS -
Last Modified: 8/26/2016
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