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ARS Home » Southeast Area » Fayetteville, Arkansas » Poultry Production and Product Safety Research » People & Locations » Amanda Ashworth

Amanda J Ashworth
Poultry Production and Product Safety Research
Soil Scientist

Phone: (479) 575-6916
Fax:

UNIVERSITY OF ARKANSAS
O-303 POULTRY SCIENCE CTR
FAYETTEVILLE , AR 72701
Projects
Nutrient Management Options for Specialty Crop Production for New Veteran Farmers
Cooperative Agreement (A)
  Accession Number: 436243
Novel Nutrient Management for Organic Edamame and Sweet Corn Production for New Veteran Farmers
Cooperative Agreement (A)
  Accession Number: 436259
Quantifying Air and Water Quality Benefits of Improved Poultry Manure Management Practices
In-House Appropriated (D)
  Accession Number: 431658
Novel Nutrient Management Options for Organic Edamame and Sweet Corn Production for New Veteran Farmers
Reimbursable Cooperative Agreement (R)
  Accession Number: 434622
Conservation Pasture Management on Antimicrobial Resistance Bacteria in Water and Soil Systems: Longitudinal Analysis Over 13 Years
Non-Assistance Cooperative Agreement (S)
  Accession Number: 433141
Managing Nutrients and Carbon to Optimize Agroecosystem Productivity and Resilience
Non-Assistance Cooperative Agreement (S)
  Accession Number: 436578
Agricultural Systems Research on Tribal Lands
Non-Assistance Cooperative Agreement (S)
  Accession Number: 436196
Plant-Soil-Water Nexus: Agricultural Systems Research on Tribal Lands
Non-Assistance Cooperative Agreement (S)
  Accession Number: 436197
Plant-Soil-Water Nexus: Agricultural Systems Research on Tribal Lands
Trust Fund Cooperative Agreement (T)
  Accession Number: 435714

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Soil quality indices following long-term conservation pasture management practices Reprint Icon - (Peer Reviewed Journal)
Amorim, H., Ashworth, A.J., Moore Jr, P.A., Wienhold, B.J., Savin, M.C., Owens, P.R., Jagadamma, S., Carvalho, T.S., Sutie, X. 2020. Soil quality indices following long-term conservation pasture management practices. Agriculture, Ecosystems and Environment. https://doi.org/10.1016/j.agee.2020.107060.
Spatially and temporally disparate data in systems agriculture: issues and prospective solutions Reprint Icon ()
Kharel, T.P., Ashworth, A.J., Buser, M.D., Owens, P.R. 2020. Spatially and temporally disparate data in systems agriculture: issues and prospective solutions. Agronomy Journal. http://dx.doi.org/10.1002/agj2.20285.
Tractor guidance improves production efficiency by reducing overlaps and gaps Reprint Icon - (Peer Reviewed Journal)
Kharel, T.P., Ashworth, A.J., Shew, A., Popp, M.P., Owens, P.R. 2020. Tractor guidance improves production efficiency by reducing overlaps and gaps. Agricultural & Environmental Letters. 5:e20012. https://doi.org/10.1002/ael2.20012.
Effect of a new manure amendment on ammonia emissions from poultry litter Reprint Icon - (Peer Reviewed Journal)
Anderson, K., Moore Jr, P.A., Martin, J.W., Ashworth, A.J. 2020. Effect of a new manure amendment on ammonia emissions from poultry litter. Atmosphere. 11(3), 257:1-14. https://doi.org/10.3390/atmos11030257.
Soil quality indices based on long-term conservation cropping systems management Reprint Icon - (Peer Reviewed Journal)
Amorim, H.C., Ashworth, A.J., Wienhold, B.J., Savin, M.C., Allen, F.L., Saxton, A.M., Owens, P.R., Curi, N. 2020. Soil quality indices based on long-term conservation cropping systems management. Agrosystems, Geosciences & Environment. https://doi.org/10.1002/agg2.20036.
Effect of seeding distance from subsurface banded poultry litter on corn yield and leaf greenness Reprint Icon - (Peer Reviewed Journal)
Ashworth, A.J., Pote, D.H., Way, T.R., Watts, D.B. 2020. Effect of seeding distance from subsurface banded poultry litter on corn yield and leaf greenness. Agronomy Journal. 112:1679-1689. https://doi.org/10.1002/agj2.20186.
Switchgrass nitrogen fertility response and nutrient cycling in a hay system Reprint Icon - (Peer Reviewed Journal)
Ashworth, A.J., Moore Jr, P.A., King, R., Douglas, J.L., Pote, D.A., Jacobs, A. 2020. Switchgrass nitrogen fertility response and nutrient cycling in a hay system. Agronomy Journal. 112:1963-1971. https://doi.org/10.1002/agj2.20156.
Soil quality indexes improve following long-term manure deposition and conservation practices - (Abstract Only)
Technology applications for optimizing farm production - (Abstract Only)
Relationship of Anti-Mullerian hormone to reproductive traits in Katahdin ewes bred in late spring or fall Reprint Icon - (Peer Reviewed Journal)
Acharya, M., Burke, J.M., Ashworth, A.J., Rorie, R.W. 2020. Relationship of Anti-Mullerian hormone to reproductive traits in Katahdin ewes bred in late spring or fall. Small Ruminant Research. 8:48-56. https://doi.org/10.4236/arsci.2020.81005.
Long-Term effects of grazing management and buffer strips on phosphorus runoff from pastures fertilized with poultry litter Reprint Icon - (Peer Reviewed Journal)
Kelsey, A.R., Moore Jr, P.A., Pilon, C., Owens, P.R., Ashworth, A.J., Miller, D., Delaune, P. 2020. Long-Term effects of grazing management and buffer strips on phosphorus runoff from pastures fertilized with poultry litter. Journal of Environmental Quality. 49:85-96. https://doi.org/10.1002/jeq2.20010.
Digital soil mapping using legacy data in Central America - (Abstract Only)
Review of antibiotic resistance, ecology, and dissemination and mitigation in U.S. broiler poultry systems Reprint Icon ()
Yang, Y., Ashworth, A.J., Cook, K.L., Willett, C., Upadhyay, A., Owens, P.R., Ricke, S.C., DeBruyn, J.M., Moore Jr, P.A. 2019. Review of antibiotic resistance, ecology, and dissemination and mitigation in U.S. broiler poultry systems. Frontiers in Microbiology. 10:2639. https://doi.org/10.3389/fmicb.2019.02639.
Long-term cropping systems management influences soil strength and nutrient cycling Reprint Icon - (Peer Reviewed Journal)
Ashworth, A.J., Owens, P.R., Allen, F. 2020. Long-term cropping systems management influences soil strength and nutrient cycling. Geoderma. https://doi.org/10.1016/j.geoderma.2019.114062.
Comparing yield trial locations based on their elicited expressions of genetic variance among soybean cultivars Reprint Icon - (Peer Reviewed Journal)
Ashworth, A.J., Knapp, V., Allen, F.L., Saxton, A.M. 2020. Comparing yield trial locations based on their elicited expressions of genetic variance among soybean cultivars. Crop Science. 60:1313–1324. https://doi.org/10.1002/csc2.20066.
Soil bacterial biodiversity is driven by long-term pasture management, poultry litter, and cattle manure inputs Reprint Icon - (Peer Reviewed Journal)
Yang, Y., Ashworth, A.J., Debruyn, J.M., Willett, C., Durso, L.M., Cook, K.L., Moore Jr, P.A., Owens, P.R. 2019. Soil bacterial biodiversity is driven by long-term pasture management, poultry litter, and cattle manure inputs. PeerJ. 7:e7839. https://doi.org/10.7717/peerj.7839.
Browse potential of bristly locust, smooth sumac, and sericea lespedeza for small ruminants Reprint Icon - (Peer Reviewed Journal)
Acharya, M., Ashworth, A.J., Burner, D., Burke, J.M., Pote, D.H., Muir, J.P. 2019. Browse potential of bristly locust, smooth sumac, and sericea lespedeza for small ruminants. Agroforestry Systems. https://doi.org/10.1007/s10457-019-00479-0.
Soil quality indices based on long-term conservation cropping systems management - (Abstract Only)
Simulating switchgrass biomass productivity using ALMANAC. I. Calibration of soil water Reprint Icon - (Peer Reviewed Journal)
Rocateli, A.C., Ashworth, A.J., West, C.P., Brye, K.R., Popp, M.P., Kiniry, J.R. 2020. Simulating switchgrass biomass productivity using ALMANAC. I. Calibration of soil water. Agronomy Journal. 112:183-193. https://doi.org/10.1002/agj2.20054.
A historical review on antibiotic resistance of foodborne Campylobacter Reprint Icon - (Peer Reviewed Journal)
Yang, Y., Feye, K.M., Shi, Z., Pavlidis, H.O., Kogut, M.H., Ashworth, A.J., Ricke, S. 2019. A historical review on antibiotic resistance of foodborne Campylobacter. Frontiers in Microbiology. 10:1-8. https://doi.org/10.3389/fmicb.2019.01509.
Crop rotation and bio-cover impact on no-tillage corn, soybean, and cotton profitability in Tennessee - (Abstract Only)
Switchgrass forage yield and compositional response to phosphorus and potassium Reprint Icon - (Peer Reviewed Journal)
Ashworth, A.J., Moore Jr, P.A., King, R., Douglas, J.L., Pote, D.H., Jacobs, A., Pratt, E. 2019. Switchgrass forage yield and compositional response to phosphorus and potassium. Agrosystems, Geosciences & Environment. 2:190010. https://doi.org/10.2134/age2019.02.0010.
Feasibility and concurrent remediation of red mud as an in situ pyrolysis catalyst - (Peer Reviewed Journal)
Lepore, A., Ashworth, A.J., Pyoungchung, K., Labbe, N., Connatser, R.M., Allen, F.L. 2019. Feasibility and concurrent remediation of red mud as an in situ pyrolysis catalyst. BioResources. 14(2):4696-4707.
White (Trifolium repens L.) and arrowleaf (Trifolium vesiculosum Savi) clover emergence in varying loblolly pine (Pinus taeda L.) tree alley spacings Reprint Icon - (Peer Reviewed Journal)
Adams, T., Philipp, D., Burner, D.M., Jennings, J., McPeake, B., Ashworth, A.J., Pote, D.H., Burke, J.M., Rhein, R. 2019. White (Trifolium repens L.) and arrowleaf (Trifolium vesiculosum Savi) clover emergence in varying loblolly pine (Pinus taeda L.) tree alley spacings. American Journal of Plant Sciences. 10:659-669. https://doi.org/10.4236/ajps.2019.104048.
Carbon sequestration and nitrogen uptake in a temperate silvopasture system Reprint Icon - (Peer Reviewed Journal)
Dold, C., Thomas, A.L., Ashworth, A.J., Philipp, D., Brauer, D.K., Sauer, T.J. 2019. Carbon sequestration and nitrogen uptake in a temperate silvopasture system. Nutrient Cycling in Agroecosystems. 114(1):85-98. https://doi.org/10.1007%2Fs10705-019-09987-y.
Are soils beneath coniferous tree stands more acidic than soils beneath deciduous tree stands? Reprint Icon - (Peer Reviewed Journal)
Burgess-Conforti, J.R., Moore Jr, P.A., Owens, P.R., Miller, D., Ashworth, A.J., Hays, P.D., Evans-White, M., Anderson, K.R. 2019. Are soils beneath coniferous tree stands more acidic than soils beneath deciduous tree stands? Environmental Science and Pollution Research. 26:14930–14931. https://doi.org/10.1007/s11356-019-04883-y.
Spatial distribution of soil phosphorus, calcium, and pH following long-term broiler litter application Reprint Icon - (Peer Reviewed Journal)
Jiang, Y., Sun, Z., Owens, P.R., Adhikari, K., Wang, Q., Dorantes, M., Read, J.J., Ashworth, A.J., Libohova, Z. 2019. Spatial distribution of soil phosphorus, calcium, and pH following long-term broiler litter application. Journal of Environmental Quality. https://doi.org/10.2134/jeq2018.11.0406.
Nutrient characteristics of poultry manure and litter Reprint Icon ()
Ashworth, A.J., Chastain, J.P., Moore Jr, P.A. 2020. Nutrient characteristics of poultry manure and litter. Soil Science Society of America Journal. 67-87. https://doi.org/10.2134/asaspecpub67.c5.
Global meta-analysis of cotton yield and weed suppression from cover crops - (Peer Reviewed Journal)
Toler, H.D., Auge, R.M., Benelli, V., Allen, F.L., Ashworth, A.J. 2019. Global meta-analysis of cotton yield and weed suppression from cover crops. Crop Science. 59:1-13.
Spatial soil nutrient-plant-herbivore linkages: A case study from two poultry litter amended pastures in Northwest Arkansas Reprint Icon - (Peer Reviewed Journal)
Braden, I.S., West, C.P., Ashworth, A.J. 2019. Spatial soil nutrient-plant-herbivore linkages: A case study from two poultry litter amended pastures in Northwest Arkansas. Agrosystems, Geosciences & Environment. 2:180036. https://doi.org/10.2134/age2018.09.0039.
Developing best management strategies for reducing soluble phosphorus losses from poultry litter in grazing systems - (Abstract Only)
Long-term study on the effects of buffer strips and grazing management on phosphorus runoff from pastures fertilized with poultry litter - (Abstract Only)
Growth rate of Giant Miscanthus (Miscanthus x giganteus) and Giant Reed (Arundo donax) in a low-input system in Arkansas, USA Reprint Icon - (Peer Reviewed Journal)
Acharya, M., Burner, D.M., Ashworth, A.J., Felix, F., Adams, T. 2018. Growth rate of Giant Miscanthus (Miscanthus x giganteus) and Giant Reed (Arundo donax) in a low-input system in Arkansas, USA. American Journal of Plant Sciences. 9:2371-2384. https://doi.org/10.4236/ajps.2018.912172.
Economic and environmental impact assessment of tractor guidance technology - (Peer Reviewed Journal)
Ashworth, A.J., Lindsay, K.R., Popp, M.P., Owens, P.R. 2018. Economic and environmental impact assessment of tractor guidance technology. Agricultural and Environmental Letters. 3:1-5. Available: https://dl.sciencesocieties.org/publications/ael/pdfs/3/1/180038.
A decision - Support system for analyzing tractor guidance technology Reprint Icon - (Peer Reviewed Journal)
Lindsay, K.R., Popp, M.P., Ashworth, A.J., Owens, P.R. 2018. A decision - Support system for analyzing tractor guidance technology. Computers and Electronics in Agriculture. 153:115-125. https://doi.org/10.1016/j.compag.2018.08.014.
Global meta-analysis reveals agro-grassland productivity varies based on species diversity over time Reprint Icon - (Peer Reviewed Journal)
Ashworth, A.J., Toler, H.D., Allen, F.L., Auge, R.M. 2018. Global meta-analysis reveals agro-grassland productivity varies based on species diversity over time. PLoS One. 13(7):e0200274. https://doi.org/10.1371/journal.pone.0200274.
Grazing management and buffer strip impact on nitrogen runoff from pastures fertilized with poultry litter - (Peer Reviewed Journal)
Pilon, C., Moore Jr, P.A., Pote, D.H., Martin, J.W., Owens, P.R., Ashworth, A.J., Miller, D.M., Delaune, P.B. 2018. Grazing management and buffer strip impact on nitrogen runoff from pastures fertilized with poultry litter. Journal of Environmental Quality. Available: https://dl.sciencesocieties.org/publications/jeq/abstracts/0/0/jeq2018.04.0159.
Fertilizer recommendations for switchgrass: Quantifying economic effects on quality and yield Reprint Icon - (Peer Reviewed Journal)
Popp, M.P., Ashworth, A.J., Moore Jr, P.A., Owens, P.R., Douglas, J.L., Pote, D.H., Jacobs, A., Lindsay, K. 2018. Fertilizer recommendations for switchgrass: Quantifying economic effects on quality and yield. Agronomy Journal. 110(5):1854-1861. https://doi.org/10.2134/agronj2018.04.0273.
Geostatistical mapping of metal elements distribution across conterminous USA - (Abstract Only)
Adhikari, K., Owens, P.R., West, L., Ashworth, A.J., Wilson, M.A., Miller, D.M. 2019. Geostatistical mapping of metal elements distribution across conterminous USA. Meeting Abstract. Global Symposium on Soil Pollution. 595-603.
Topographic controls on soil nutrient variations in a Silvopasture system Reprint Icon - (Peer Reviewed Journal)
Adhikari, K., Owens, P.R., Ashworth, A.J., Sauer, T.J., Libohova, Z., Richter, J., Miller, D.M. 2018. Topographic controls on soil nutrient variations in a Silvopasture system. Agrosystems, Geosciences & Environment. https://doi.org/10.2134/age2018.04.0008.
Geostatistical mapping of metal elements distribution across conterminous USA - (Abstract Only)
Crop rotations and poultry litter affect dynamic soil chemical properties and soil biota long-term - (Peer Reviewed Journal)
Ashworth, A.J., Allen, F.L., Owens, P.R., Debruyn, J.M., Sams, C. 2018. Crop rotations and poultry litter impact dynamic soil chemical properties and soil biota long-term. Journal of Environmental Quality. Available: https://dl.sciencesocieties.org/publications/jeq/pdfs/0/0/jeq2017.12.0465.
Carbon budget calculation for agroforestry systems ()
Dold, C., Thomas, A.L., Ashworth, A.J., Philipp, D., Adams, T.C., Sauer, T.J. 2018. Carbon budget calculation for agroforestry systems. Temperate Agroforester. 24(1). Available: https://www.aftaweb.org/136-2018-vol-24/2018-vol-24-no-1/229-carbon-budget-calculation-for-silvopastoral-systems.html
Decision support for economic and environmental impact of tractor guidance on small crop and livestock farms - (Abstract Only)
A pattern recognition approach combined with Fuzzy Logic for predicting soil properties and function. International Commission of Agricultural and Biosystems - (Abstract Only)
Effects of land-applied ammonia scrubber solutions on yield, nitrogen uptake, soil test phosphorus and phosphorus runoff - (Peer Reviewed Journal)
Martin, J.W., Moore Jr, P.A., Hong, L., Ashworth, A.J., Miles, D.M. 2018. Effects of land-applied ammonia scrubber solutions on yield, nitrogen uptake, soil test phosphorus and phosphorus runoff. Journal of Environmental Quality. 47(2):263-269.
Long-term above-ground biomass production in a red oak-pecan agroforestry system - (Abstract Only)
Dold, C., Thomas, A., Sauer, T.J., Ashworth, A.J., Philipp, D. 2017. Long-term above-ground biomass production in a red oak-pecan agroforestry system. In: Proceedings of 15th Annual North American Agroforestry Conference June 27-29, 2017, Blacksburg, VA.
Using Google SketchUp to simulate tree row azimuth effects on alley shading - (Peer Reviewed Journal)
Burner, D.M., Ashworth, A.J., Laughlin, K.F., Boyer, M.E. 2017. Using Google SketchUp to simulate tree row azimuth effects on alley shading. Agronomy Journal. 110:1-6.
Predicted harvest time effects on switchgrass moisture content, nutrient concentration, yield, and profitability - (Peer Reviewed Journal)
Lindsay, K.R., Popp, M.P., West, C.P., Ashworth, A.J., Rocateli, A.C., Farris, R., Kakani, G., Fritschi, F.B., Green, S.V., Alison, M.W., Mawg, M.J., Acosta-Gamboai, L. 2017. Predicted harvest time effects on switchgrass moisture content, nutrient concentration, yield, and profitability. Biomass and Bioenergy. 108:74-89. https://doi.org/10.1016/j.biombioe.2017.09.017.
Ratoon Cold Tolerance of Pennisetum, Erianthus and Saccharum Bioenergy Feedstocks - (Peer Reviewed Journal)
Burner, D.M., Hale, A.L., Viator, R.P., Belesky, D.P., Houx III, J.H., Ashworth, A.J., Fritschi, F.B. 2017. Ratoon Cold Tolerance of Pennisetum, Erianthus and Saccharum Bioenergy Feedstocks. Industrial Crops and Products. 109C(2017)327-334.http://dx.doi.org/10.1016/j.indcrop.2017.08.020.
Microbial community structure is affected by cropping sequences and poultry litter under long-term no-tillage - (Peer Reviewed Journal)
Ashworth, A.J., DeBruyn, J.M., Allen, F.L., Radosevick, M., Owens, P.R. 2017. Microbial community structure is affected by cropping sequences and poultry litter under long-term no-tillage. Soil Biology and Biochemistry. 114:210-219.
N2 fixation of common and hairy vetches when intercropped into switchgrass - (Peer Reviewed Journal)
Ashworth, A.J., Allen, F.L., Warwick, K.S., Keyser, P.D., Bates, G.E., Tyler, D.D., Lambdin, P.L., Pote, D.H. 2017. N2 fixation of common and hairy vetches when intercropped into switchgrass. Agronomy Journal. 7(2):39. doi:10.3390/agronomy7020039.
Diverse rotations and poultry litter improves soybean yield ()
Ashworth, A.J., Allen, F.L., Saxton, A.M., Tyler, D.D. 2017. Diverse rotations and poultry litter improves soybean yield. CSA News. 62:14-14.doi:10.2134/csa2017.62.0606.
Switchgrass growth and effects on biomass accumulation, moisture content, and nutrient removal - (Peer Reviewed Journal)
Ashworth, A.J., Rocateli, A.C., West, C.P., Brye, K., Popp, M.P. 2017. Switchgrass growth and effects on biomass accumulation, moisture content, and nutrient removal. Agronomy Journal. 109:1-9.
Dual-Use Bioenergy-Livestock Feed Potential of Giant Miscanthus, Giant Reed, and Miscane - (Peer Reviewed Journal)
Burner, D.M., Ashworth, A.J., Pote, D.H., Kiniry, J.R., Belesky, D.P., Houx, J.H., Carver, P., Fritschi, F.B. 2017. Dual-use bioenergy-livestock feed potential of giant miscanthus, giant reed, and miscane. Agricultural Sciences. 8:97-112.
Impact of crop rotation and soil amendments on long-term no-tilled soybean yields - (Peer Reviewed Journal)
Ashworth, A.J., Allen, F., Saxton, A.N., Tyler, D. 2017. Impact of crop rotation and soil amendments on long-term no-tilled soybean yields. Agronomy Journal. 109(3):1-9.
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