Archive Nut, Prune and Olive Programs

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In-a-Nutshell - Nut Culture
Dried Plum News - Prune Culture
Olive Notes - Olive Culture

Newsletter Articles:

May 2025Archived

Field picture submitted by Elizabeth Fichtner

Publications

Pest Notes
- Olive Knot
- Black Scale
UC Pest Management Guidelines (UC Statewide IPM Project Web Site)
UC Cooperative Extension Cost and Return Studies
- Almonds
  Double Line Drip Irrigation. Southern San Joaquin Valley. 2016 PDF
- Almonds
  Flood Irrigated. San Joaquin Valley North. 2011. PDF
- Almonds
  Micro-sprinkler. San Joaquin Valley North. 2016. PDF
- Olive Oil
  Super High Density. San Joaquin Valley 2007. PDF
- Olives - San Joaquin Valley. 2005 PDF
- Pecans - Sacramento/San Joaquin Valley - 2005. PDF
- Pistachios
  Low Volume Irrigation - San Joaquin Valley South. 2015. PDF
- Walnuts
  Late Leafing - Lateral Bearing. San Joaquin Valley North. 2017. PDF
- Walnuts
  Micro-Sprinkler Irrigation - San Joaquin Valley North. 2007 PDF

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Established Orchards

The snapshots on this page describe various tactics that could be used to protect established orchards against HLB. Articles available as PDFs. Click on images to the right to download. If you have issues downloading any of the PDFs, please let us know.

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Replants

The snapshots on this page describe various long-term strategies being developed to combat HLB that would require replanting citrus orchards. Articles available as PDFs. Click on images to the right to download. If you have issues downloading any of the PDFs, please let us know.

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Psyllid

The snapshots on this page describe methods that could be used to alter or affect the psyllid so that it can not spread the bacterium that causes HLB. Articles available as PDFs. Click on images to the right to download. If you have issues downloading any of the PDFs, please let us know.

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General Topics

The snapshots on this page provide background information on genetic engineering and editing approaches for plant modification and HLB detection. New genome editing technologies - CRISPR Drs. Peggy Lemaux, Becky Mackelprang (UC Berkeley) and Elizabeth Grafton-Cardwell (UC Riverside).

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Altering the Asian citrus psyllid’s beneficial bacteria to stop HLB spread

Research by Dr. Kirsten Pelz-Stelinski, University of Florida Article written by Elizabeth Grafton-Cardwell, Peggy G. Lemaux, & Lukasz Stelinski. Revised August 3, 2017 Click here to download PDF The insect vector, Asian citrus psyllid, spreads the CLas bacterium that causes HLB when it feeds.

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Attractants and traps for ACP management

Research by Dr. Lukasz Stelinski, University of Florida Article written by Lukasz Stelinski, Elizabeth Grafton-Cardwell and Peggy G. Lemaux.

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Using peptides as a preventive approach to target the psyllid and the pathogen

Research by Dr. Robert Shatters, USDA Horticultural Research Laboratory, Fort Pierce, FL Article written by Elizabeth Grafton-Cardwell, Peggy G. Lemaux, & Lukasz Stelinski. Revised May 10, 2018 Click here to download PDF Peptides are short chains that come from naturally occurring proteins.

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Disease resistance in citrus with addition of plant defense genes

Research by Drs. Manjul Dutt and Jude Grosser, University of Florida Article written by Manjul Dutt, Jude Grosser, Elizabeth Grafton-Cardwell, Peggy G. Lemaux, & Lukasz Stelinski. Revised May 1, 2017.

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Controlling psyllid gut cell death to prevent Huanglongbing

Research by Dr. Michelle Heck, USDA-Boyce Thomson Institute Article written by Michelle Heck, Elizabeth Grafton-Cardwell, Peggy G. Lemaux, & Lukasz Stelinski. Revised September 19, 2023.

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Biological control of Asian citrus psyllid in California

Research by Dr. Mark Hoddle, University of California, Riverside Article written by Mark Hoddle. Revised August 31, 2018.

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