Spencer Walse

Research:

Current efforts are focused on solving chemically-based problems in agriculture. Research activities involve the development and integration of predictive chemical kinetics, modeling strategies and field/in situ results as they relate to quantitatively understanding the interaction of biologically active molecules with their surroundings. We investigate molecules that are produced naturally as well as those that are produced by humans.

Education:

• Agricultural & Environmental Chemistry, University of South Carolina, 2003 PhD
• Chemistry, University of Illinois, Urbana-Champaign, 1998 BS

Teaching:

• ETX 203 - Environmental Toxicants

Professional Activities:

• Research Chemist, USDA-Agricultural Research Service
  https://www.ars.usda.gov/pacific-west-area/parlier/sjvasc/cpq/people/spencer-walse/
• Member of the Agricultural & Environmental Chemistry Graduate Group
• Invited Member, Phytosanitary Measures Research Group (PMRG), International Plant Protection Convention (IPPC) (2014-present)
• Elected Member, Permanent Scientific Committee-US representative, International Conference on Controlled Atmospheres and Fumigation in Stored Products (2015-present)
• Elected Member, Executive Committee, American Chemical Society AGRO Division (2020-present)

Recent Publications:

Walse, S. S., Tebbets, J. S. and Leesch, J. G. Postharvest methyl bromide fumigation of Japanese plums to control codling moth (Lepidoptera: Tortricidae). J. Asian-Pac. Entomol.  22(3): 807-815. 2019.

Abrams, A. E., Kawagoe, J. C., Najar-Rodriguez, A. and Walse, S. S. Sulfuryl fluoride fumigation to control brown marmorated stinkbug (Hempitera: Pentatomidae). Postharvest Biol. Technol. 163(4). 2020. 11111 DOI:10.1016/j.postharvbio.2019.111111

Rodriguez, M.S., Tebbets, J. S. and Walse, S. S. Methyl bromide vacuum fumigation of California USA in-shell walnuts packaged in fiberboard cartons. J. Stored Prod. Res. 2021. Research. 94. Article 101879. https://doi.org/10.1016/j.jspr.2021.101879.
DOI: https://doi.org/10.1016/j.jspr.2021.101879

Walse, S.S. and Jimenez, L.R. Postharvest fumigation of fresh citrus with cylinderized phosphine to control bean thrips (Thysanoptera: Thripidae) Horticulturae, 7(6), 134. 2021. https://doi.org/10.3390/horticulturae7060134

Obenland, D., Cranney, J. R., Tebbets, J.S., Walse, S. S. and Arpaia, M. L. Fumigating citrus with phosphine does not impact marketability or eating quality. Plant Health Progress, 22:516–523. 2021. https://doi.org/10.1094/php-03-21-0053-rs. 2021.

Kawagoe, J.C.; Abrams, A.E.; and Walse, S.S. Ethyl formate fumigation to control brown marmorated stinkbug (Hempitera: Pentatomidae). Pest Manag. Sci., 78, 3090-3097, 2022 https://doi.org/10.1002/ps.6935

Yokomi, R., Delgado, J.K., Unruh, T.R., Barcenas, N.M., Garczynski, S.F., Walse, S. S. Pérez de León, A.A. and Cooper, W.R. Molecular advances in larval fruit moth identification to facilitate fruit export from western USA under systems approaches. Annals of the Entomological Society of America. 115(1), 105-112. 2023. https://doi.org/10.1093/aesa/saab040

Corbett, S. M. A., Collum, J. P., Abrams, A. E., Rodriguez, M. S., Leskey, T. C. and Walse, S. S. Confirmatory evaluation of eFUME for control of brown marmorated stink bug, Halyomorpha halys, Stål (Hemiptera: Pentatomidae). J. Econ. Ent. 2023 (1-8) https://doi.org/10.1093/jee/toad064