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ARS Home » Southeast Area » Houma, Louisiana » Sugarcane Research » People & Locations » Douglas Spaunhorst

Douglas J Spaunhorst
Sugarcane Research
Research Agronomist

Phone: (985) 853-3161
Fax: (985) 868-8369

5883 USDA ROAD
HOUMA , LA 70360
Projects
Integrated Weed and Insect Pest Management Systems for Sustainable Sugarcane Production
In-House Appropriated (D)
  Accession Number: 429577
Improving Sugarcane Production Efficiency (ASCL)
Trust Fund Cooperative Agreement (T)
  Accession Number: 428910

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Confirmation of herbicide resistance mutations Trp574Leu, ¿G210, and EPSPS gene amplification and control of multiple herbicide-resistant Palmer amaranth (Amaranthus palmeri) with chlorimuron-ethyl, fomesafen, and glyphosate -
Spaunhorst, D.J., Nie, H., Todd, J.R., Young, J.M., Young, B.G., Johnson, W.G. 2019. Confirmation of herbicide resistance mutations Trp574Leu, G210, and EPSPS gene amplification and control of multiple herbicide-resistant Palmer amaranth (Amaranthus palmeri) with chlorimuron-ethyl, fomesafen, and glyphosate. PLoS One. 14(3):e0214458.
Impact of acetic acid concentration, application volume, and adjuvants on weed control efficacy -
Webber III, C.L., White Jr, P.M., Shrefler, J.W., Spaunhorst, D.J. 2018. Impact of acetic acid concentration, application volume, and adjuvants on weed control efficacy. Journal of Agricultural Science. 10(8):1-6. https://doi.org/10.5539/jas.v10n8p1.
Seedbank persistence of Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) across diverse geographical regions in the United States -
Korres, N.E., Norsworthy, J.K., Young, B.G., Reynolds, D.B., Johnson, W.G., Conley, S.P., Smeda, R.J., Mueller, T.C., Spaunhorst, D.J., Gage, K.L., Loux, M., Kruger, G.R., Bagavathiannan, M.V. 2018. Seedbank persistence of Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) across diverse geographical regions in the United States. Weed Science. https://doi.org/10.1017/wsc.2018.27.
Performance of synthetic auxin and HPPD-inhibiting herbicides for control of divine nightshade (Solanum nigrescens Mart. & Gal.) in Louisiana sugarcane -
Spaunhorst, D.J., Orgeron, A.J. 2018. Performance of synthetic auxin and HPPD-inhibiting herbicides for control of divine nightshade (Solanum nigrescens Mart. & Gal.) in Louisiana sugarcane [abstrct]. Journal of the American Society of Sugar Cane Technologists. 38:45.
Evaluation of new herbicide chemistries for managing itchgrass (Rottboellia cochinchinensis) in Louisiana sugarcane -
Orgeron, A.J., Spaunhorst, D.J. 2018. Evaluation of new herbicide chemistries for managing itchgrass (Rottboellia cochinchinensis) in Louisiana sugarcane [abstract]. Journal of the American Society of Sugar Cane Technologists. 38:44.
Bermudagrass - A lingering problematic weed in Louisiana sugarcane -
Spaunhorst, D.J., Orgeron, A.J. 2018. Bermudagrass - A lingering problematic weed in Louisiana sugarcane. Sugar Journal. 80(12):10-13.
Solanum nigrescens: A potentially problematic nightshade weed species in Louisiana sugarcane -
Orgeron, A.J., Schilling, E.E., Urbatsch, L.E., Ma, Q., Spaunhorst, D.J. 2018. Solanum nigrescens: A potentially problematic nightshade weed species in Louisiana sugarcane. Journal American Society of Sugar Cane Technologists. 38:23-43.
Sugarcane and pine biochar as amendments for greenhouse growing media for the production of bean (Phaseolus vulgaris L.) seedlings -
Webber III, C.L., White Jr, P.M., Gu, M., Spaunhorst, D.J., Lima, I.M., Petrie, E.C. 2018. Sugarcane and pine biochar as amendments for greenhouse growing media for the production of bean (Phaseolus vulgaris L.) seedlings. Journal of Agricultural Science. 10(4):58-68. https://doi.org/10.5539/jas.v10n4p58.
Phenology of five Palmer amaranth (Amaranthus palmeri) populations grown in northern Indiana and Arkansas -
Spaunhorst, D.J., Devkota, P., Johnson, W.G., Smeda, R.J., Meyer, C.J., Norsworthy, J.K. 2018. Phenology of five Palmer amaranth (Amaranthus palmeri) populations grown in northern Indiana and Arkansas. Weed Science. doi:10.1017/wsc.2018.12.
A review of topramezone in sugarcane and potential carryover of post emergence soybean herbicides on plant cane -
Sugarcane biochar as an amendment for greenhouse growing media for the production of cucurbit seedlings -
Webber III, C.L., White Jr, P.M., Spaunhorst, D.J., Lima, I.M., Petrie, E.C. 2018. Sugarcane biochar as an amendment for greenhouse growing media for the production of cucurbit seedlings. Agronomy Journal. 10(2):104-115. https://doi.org/10.5539/jas.v10n2p104.
Sugarcane crop residue and bagasse allelopathic impact on oat (Avena sative L.), tall morningglory (Ipomoea purpurea L. Roth), and redroot pigweed (Amaranthus retroflexus L.) germination -
Webber III, C.L., White Jr, P.M., Spaunhorst, D.J., Wayment, D.G., Landrum, D.S. 2018. Sugarcane crop residue and bagasse allelopathic impact on oat (Avena sative L.), tall morningglory (Ipomoea purpurea L. Roth), and redroot pigweed (Amaranthus retroflexus L.) germination. Journal of Agricultural Science. 10(2):15-22. https://doi.org/10.5539/jas.v10n2p15.
Sugarcane field residue and root allelopathic impact on weed seed germination -
Webber III, C.L., White Jr, P.M., Landrum, D.S., Spaunhorst, D.J., Wayment, D.G., Dorvil, E.N. 2017. Sugarcane field residue and root allelopathic impact on weed seed germination. Journal of Agricultural Science. 10(1):66-72. https://doi.org/10.5539/jas.v10n1p66.
Sugarcane field residue and bagasse allelopathic impact on vegetable seed germination Reprint Icon -
Webber III, C.L., White Jr, P.M., Landrum, D.S., Spaunhorst, D.J., Wayment, D.G. 2017. Sugarcane field residue and bagasse allelopathic impact on vegetable seed germination. Journal of Agricultural Science. 9(11):10-16.
Comparative performance of sugarcane bagasse and black polyethylene as mulch for squash (Cucurbita pepo L.) production Reprint Icon -
Webber III, C.L., White Jr, P.M., Spaunhorst, D.J., Petrie, E.C. 2017. Comparative performance of sugarcane bagasse and black polyethylene as mulch for squash (Cucurbita pepo L.) production. Journal of Agricultural Science. 9(11):1-9.
Variable tolerance among Palmer amaranth (Amaranthus palmeri) biotypes to glyphosate, 2,4-D amine, and premix formulation of glyphosate plus 2,4-D choline (Enlist Duo®) herbicide Reprint Icon -
Spaunhorst, D.J., Johnson, W.G. 2017. Variable tolerance among Palmer amaranth (Amaranthus palmeri) biotypes to glyphosate, 2,4-D amine, and premix formulation of glyphosate plus 2,4-D choline (Enlist Duo®) herbicide. Weed Science. 65(6):787-797.
Impact of sugarcane bagasse ash as an amendment on the physical properties, nutrient content and seedling growth of a certified organic greenhouse growing media Reprint Icon -
Webber III, C.L., White Jr, P.M., Spaunhorst, D.J., Petrie, E.C. 2017. Impact of sugarcane bagasse ash as an amendment on the physical properties, nutrient content and seedling growth of a certified organic greenhouse growing media. Journal of Agricultural Science. 9(7):1. doi:10.5539/jas.v9n7p1.
Influence of cover crops on management of Amaranthus species in glyphosate- and glufosinate-resistant soybean Reprint Icon -
Loux, M.M., Dobbels, K.W., Bradley, K.W., Johnson, W.G., Young, B.G., Spaunhorst, D.J., Norsworthy, J.K., Palhano, M., Steckel, L.E. 2017. Influence of cover crops on management of Amaranthus species in glyphosate- and glufosinate-resistant soybean. Weed Technology. 31:487-795.
Does fallow planted soybean and sweet sorghum reduce plant cane density? -
Spaunhorst, D.J., White Jr, P.M. 2017. Does fallow planted soybean and sweet sorghum reduce plant cane density? Journal of American Society of Sugar Cane Technologists. 37:24.
Allelopathic impact of HoCP 96-540 field residue on seed germination -
Webber III, C.L., White Jr, P.M., Spaunhorst, D.J., Landrum, D.S. 2017. Allelopathic impact of HoCP 96-540 field residue on seed germination [abstract]. Journal of the American Society of Sugar Cane Technologists. 37:50-51.
Sugarcane boiler ash as an amendment for soilless growing media -
Webber III, C.L., White Jr, P.M., Spaunhorst, D.J., Petrie, E.C., Landrum, D.S. 2017. Sugarcane boiler ash as an amendment for soilless growing media [abstract]. Journal of the American Society of Sugar Cane Technologists. 37:50.