Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
University of California
Division of Agriculture and Natural Resources

Betsy M. Karle

Photo of Betsy M. Karle
Area Dairy Advisor & County Director
Cooperative Extension Glenn County
PO Box 697, 821 E. South Street
Orland, CA 95963
(530) 865-1156
bmkarle@ucanr.edu Create VCard


M.S. Ecology, UC Davis. 2003
B.S. Agricultural Systems & Environment, UC Davis. 1999

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


Peer Reviewed

  • Davy, J.S.; Karle, B.M., et al. (2015). "Broadleaf weed control in irrigated pasture containing Trifolium repens." Crop and Pasture Science 66: 985-991.
  • Meyer, D.; Price, P., et al. (2011). "Survey of dairy housing and manure management practices in California." Journal of Dairy Science 94: 4744-4750.
  • Harter, T.; Atwill, E.R., et al. (2008). "Developing risk models of Cryptosporidium transport in soils from vegetated, tilted soil box experiments." Journal of Environmental Quality 37: 245-258.
  • Lewis, D.J.; Atwill, E.R., et al. (2005). "Linking on-farm dairy management practices to storm-flow fecal coliform loading for California coastal watersheds." Environmental Monitoring and Assessment 107: 407-425.
  • Lile, D.; Tate, K.W., et al. (2003). "Stubble height standards for Sierra Nevada meadows can be difficult to meet." California Agriculture 57: 60-64.
  • Atwill, E.R.; Hou, L., et al. (2002). "Transport of Cryptosporidium parvum oocysts through vegetated buffer strips and estimated filtration efficiency." Applied and Environmental Microbiology 68: 5517-5527.

Non-Peer Reviewed

  • Karle, B.M. (2015). Antibiotics on Dairies: Change is Coming. California Dairy Newsletter, 7: 1.
  • Karle, B.M. (2015). Bovine respiratory scoring system for pre-weaned dairy calves.
  • Karle, B.M. (2015). Evitando los Residuos de Medicamentos (Avoiding Drug Residues). California Dairy Newsletter, SPECIAL EDITION: 2.
  • Karle, B.M. (2015). Pneumonia Prevalence in Pre-weaned Dairy Calves. California Dairy Newsletter, 7: 5.
  • Karle, B.M.; Dubrovsky, S.A., et al. (2015). Prevalence of bovine respiratory disease in pre-weaned calves in Northern California. American Dairy Science Association, Orlando, FL.
  • Karle, B.M. (2015). Prevalence of Bovine Respiratory Disease in Pre-Weaned Dairy Calves in Northern California. http://ceglenn.ucanr.edu/Dairy/Calves/, University of California.
  • Karle, B.M.; Love, W.J., et al. (2014). A Survey of Calf Rearing Practices on California Dairies [abstract]. 47th American Association of Bovine Practitioners Annual Meeting, Albuquerque, NM.
  • Karle, B. M. (2014). Avoiding Drug Residues. California Dairy Newsletter, 6: 1.
  • Karle, B. M.; Love, W.J., et al. (2014). Bovine Respiratory Disease in Dairy Calves- Diagnostic Tools and Management Practices. California Dairy Newsletter, 6
  • Tate, K.W.; Dahlgren, R.A., et al. (2014). Management Practices to Improve Water Quality on Central and Western Rangelands. NI R 14-03 Supplemental Paper.. Duke University. Durham, NC,
  • Karle, B. M. (2014). Promote Your Product. California Dairy Newsletter, 6: 2.
  • Karle, M.S.; Karle, B. M. (2013). Are you Implementing AVMA's new Euthanasia Guidelines? California Dairy Newsletter, 5: 2.
  • Karle, B. M. (2013). Es ahora el momento para revisar el freestall? (Time for a Freestall Check?). California Dairy Newsletter- Spanish Edition,
  • Karle, B. M. (2013). Feeding Calves on a Higher Plane of Nutrition. California Dairy Newsletter, 5: 1-2.
  • Karle, B.M. (2012). Do You Need to be in the ILRP? California Dairy Newsletter, 4: 8.
  • Karle, B. M. (2012). Save Money by Sticking to Protocols. California Dairy Newsletter, 4: 4.
  • Karle, B.M. (2012). Time for a Freestall Check? California Dairy Newsletter, 4
  • Karle, B.M. (2011). Summer Silage Sampling Reminders. California Dairy Newsletter, 3: 2-3.
  • Heguy, J. M.; Karle, B. M., et al. (2010). "Calculating field nutrient removal rates to comply with General Order for Existing Milk Cow Dairies from California's Central Valley Regional Water Quality Control Board." Journal of Dairy Science 93: 412-412.
  • Heguy, J. M.; Karle, B. M., et al. (2010). Research Update: Variability in Dry Matter Content of Harvested Corn for Silage. California Dairy Newsletter, 2: 4.
  • Karle, B. M. (2010). Sterile Milk Sampling. California Dairy Newsletter, 2: 5.
  • Karle, B. M. (2009). Calf Feeding Notes. California Dairy Newsletter, 1: 6.
  • Meyer, D.; Price, P., et al. (2009). Evaluating Dairy Facility Options in the Central Valley. California Dairy Newsletter,
  • Karle, B. M. (2009). Prevent Residue Violations in Animals from Your facility. California Dairy Newsletter, 1: 3.
  • Silva del Rio, N.; Kistler, P., et al. (2009). Survey of Tail Docking Practices in California Dairies. California Dairy Newsletter, 1: 3.

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