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Franz J.A. Niederholzer Ph.D.

Farm Advisor   Orchard Systems
Cooperative Extension Colusa County
PO Box 180, 100 Sunrise Boulevard
Suite E
Colusa, CA 95932
(530) 458-0570
fjniederholzer@ucanr.edu Create VCard

Also in:
Sutter-Yuba Counties


Ph.D. Soil Science, UC Davis. 1997
M.S. Soil Science, UC Davis. 1990
B.A. History, Amherst College. 1982


Prunes, almonds, pears, apple, cherry, olive, plum, citrus, and pomegranate

Areas of Expertise (click to see all ANR academics with this expertise)


Peer Reviewed

  • Mayanja, I.K.; Coates, M.C., et al. (2021). Development of a stockpile heated and ambient air dryer (SHAD) for freshly harvested almonds. Applied Engineering in Agriculture. 37:3, 417-425.
  • Li, X.; Giles, D.K., et al. (2021). Evaluation of an Unmanned Aerial Vehicle as a New Method of Pesticide Application for Almond Crop Protection. Pest Management Science. 77:1, 527-537.
  • Luo, Y.; Niederholzer, F.J.A., et al. (2020). Inoculum quantification of cancer-causing pathogens, in prunes and walnut orchards using real time PCR. J Appl Microbiology. 129, 1337-1348.
  • Pourezza, A.; Moghimi, A., et al. (2020). Spray Backstop: A Method to Reduce Orchard Spray Drift Potential without Limiting the Spray and Air Delivery. Sustainability. 12:21, 8862-8875.
  • Niederholzer, F.J.A.; Glozer, K. (2019). Bloom timing and fruit set of ‘Improved French’ prune following dormant application of horticultural oil or nitrogen fertilizers as rest-breaking agents. Acta Hort. 1260, 117-123.
  • Siegel, J.P.; Strmiska, M.M., et al. (2019). Evaluating insecticide coverage in almond and pistachio for control of navel orangeworm (Amyelois transitella) (Lepidoptera: Pyralidae). Pest Manag Sci. 75:5, 1435-1442.
  • Wunderlich, L.R.; Niederholzer, F.J.A., et al. (2019). Survey reveals training needs for airblast sprayer applicators, farm managers, owners and pest control advisors. Outlooks on Pest Management. 30:2, 53-60.
  • Luo, Y.; Lichtenburg, P.S.F., et al. (2019). Understanding the process of latent infection of canker-causing pathogens in stone fruit and nut crops in California. Plant Disease. 110:9, 2374-2384.
  • Niederholzer, F.J.A.; Lampinen, B., et al. (2018). Conditioning harvested almonds on the orchard floor to reduce drying time of wetted almonds. Acta Hort. 1219, 243-250.
  • Venkitasamya, C.; Brandl, M., et al. (2018). Feasibility of using sequential infrared and hot air for almond drying and inactivation of Enterococcus faecium. LWT. 95, 123-128.
  • DeJong, T.M.; Castro, S., et al. (2017). Challenges to prune production in increasingly variable Californian weather conditions. Acta Hort. 1175, 25-28.
  • Markle, J.C.; Niederholzer, F.J.A., et al. (2016). "Evaluation of spray application methods for navel orangeworm control in almonds." Pesticide Management Science 72(12): 2339-2346.
  • Lampinen, B.; Upadhyaya, S., et al. (2015). "A second generation mobile platform for assessing midday canopy photosynthetically active radiation interception in orchard systems." Acta Hort 1058: 105-112.
  • O’Geen, T.; Saal, M., et al. (2015). "Soil suitability index identifies potential areas for groundwater banking on agricultural lands." California Agriculture 69(2): 75-84.
  • Hamby, K.A.; Nicola, N.L., et al. (2015). "Timing Spring Insecticide Applications to Target both Amyelois transitella (Lepidoptera: Pyralidae) and Anarsia lineatella (Lepidoptera: Gelechiidae) in Almond Orchards." Journal of Economic Entomology 108(2): 683-693.

California Agriculture Article Contributions

ANR Workgroup Associations

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