Mae Culumber

Nut Crops Farm Advisor
Cooperative Extension Fresno County
550 E. Shaw Avenue, Suite 210-B
(559) 241-7515
Fresno, CA 93710
559-241-7526 Create VCard


Ph.D. Soil science and agroecology, Utah State University. 2016
M.S. Plant science, molecular ecology, Utah State University. 2007
B.S. Biology, University of Wisconsin - Stevens Point. 2002

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


Peer Reviewed

  • Nouri, M. T., D.P. Lawrence, L.A. Holland, D.A. Doll, C.E. Kallsen, C.M. Culumber, and F.P. Trouillas 2019. Identification and pathogenicity of fungal species associated with canker diseases of pistachio in California. Plant Disease. 10.1094/PDIS-10-18-1717-RE.

  • Culumber C.M., J.R. Reeve (2019). Organic Orchard Floor Management Impact on Soil Quality Indicators: Nutrient Fluxes, Microbial Biomass and Activity. Nutrient Cycling in Agroecosystems.
  • Browne B., N. Ott (2018). Anaerobic soil disinfestation as an alternative to soil fumigation for management of Prunus replant disease: effects on tree growth and yield. Acta Horticulturae. 1219, 287-294.
  • Nouri, M.T. (2018). First report of Macrophomina phaseolina causing trunk and cordon canker disease of Grapevine in the United States. Plant Disease.
  • Doll, D. (2018). The evaluation of winter kaolin clay and dormant oil applications on chill accumulation and yield in the California pistachio ( Pistacia vera ) cultivars ‘Kerman’ and ‘Peters’. Acta Horticulturae. 111-118.
  • Holtz B., G. Browne (2018). Whole almond orchard recycling and the effect on second generation tree growth, yield, light interception, and fertility. Acta Horticulturae.
  • Tebeau, A.S., D.G. Alston, C.V. Ransom, B.L. Black, J.R. Reeve, and C.M. Culumber. 2017. Effects of Floor Vegetation and Fertility Management on Weed Biomass and Diversity in Peach Orchards. Weed Technology, 31: 404-415

  • Reeve, J.R. C.M. Culumber, B.L. Black, A.S. Tebeau, C.V. Ransom, D.G. Alston, M.A. Rowley, and T. Linstrom. 2017. Establishing peach trees for organic production in Utah and the Intermountain West. Scientia Horticulturae 214, 242–251

  • Culumber, C.M., S.R. Larson, T.A. Jones, and K.B. Jensen. 2013. Wide-scale Population Sampling Identifies Three Phylogenetic Races of Leymus cinereus and Low-level Genetic Admixture with Leymus triticoides. Crop Science. 53: 996-1007.

  • Culumber C.M., S.R. Larson, K.B. Jensen, and T.A. Jones. 2011. Genetic Structure of Eurasian and North American Leymus (Triticeae) Wildryes Assessed by Chloroplast DNA Sequences and AFLP Profiles. Plant Systematics and Evolution. 294: 207-225.

  • Larson S.R., C.M. Culumber, R.N. Schweigert, and J.R. Chatterton 2010. Species Delimitation Tests of Endemic Lepidium papilliferum and Identification of Other Possible Evolutionarily Significant Units in the Lepidium montanum Complex (Brassicaceae) of Western North America. Conservation Genetics 11: 57-76

Non-Peer Reviewed

  • Fichtner, E.J. (2018). Distribution of Chlorosis in Almond Orchards. West Coast Nut. August.
  • Culumber, Mae (2018). Fall and Winter Irrigation Management for Nut Crops. West Coast Nut. 10-14. November.
  • Thomsen, E.O., C.M Culumber, J.R. Reeve, G. Cardon, D. Alston, B.L. Black and C.V. Ransom. Strategies for managing soil fertility and health in organic orchards – A fact sheet. Extension, Utah State University. Horticulture/Orchards/2018-01.

  • Culumber, Mae (2017). Preventing orchard establishment and management pitfalls with online tools. 

  • Culumber, C.M. (2016). Soil nutrient cycling and water use in response to orchard floor management in stone-fruit orchards in the Intermountain West. Logan, UT, Utah State University Digital Commons. 5030, 233.

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