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

UCCE Humboldt - Del Norte Counties: Page

Green Spruce Aphid (Elatobium abietinum)

Summary of Green Spruce Aphid (Elatobium abietinum), trees affected by it, management strategies, along with pests and pathogens with similar display of symptoms on trees.

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UCCE Humboldt - Del Norte Counties: Page

Flatheaded fir borer (Phaenops drummondii)

Summary of flatheaded fir borers (Phaenops drummondii), trees affected by them, management strategies, along with pests and pathogens with similar symptoms

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UCCE Humboldt - Del Norte Counties: Page

Douglas-fir beetle (Dendroctonus pseudotsugae)

Summary of Douglas-fir beetle (Dendroctonus pseudotsugae), trees affected by them, management strategies, along with pests and pathogens with similar symptoms

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UCCE Humboldt - Del Norte Counties: Page

Black Stain Root Disease (Leptographium wagneri)

Summary of Black Stain Root Disease (Leptographium wagneri), trees affected by them, management strategies, along with pests and pathogens with a similar display of symptoms on trees

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UCCE Humboldt - Del Norte Counties: Page

Armillaria Root Disease (Armillaria spp)

Summary of Armillaria Root Disease (Armillaria spp), trees affected by them, management strategies, along with pests and pathogens with similar display of symptoms on trees

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UCCE Humboldt - Del Norte Counties: Page

Douglas-fir Dwarf Mistletoe (Arceuthobium douglasii)

Summary of Douglas-fir Dwarf Mistletoe (Arceuthobium douglasii), trees affected by them, management strategies, along with pests and pathogens with similar display of symptoms on trees

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UCCE Humboldt - Del Norte Counties: Page

Douglas-fir Pole Beetle (Pseudohylesinus nebulosus)

Summary of Douglas-fir Pole Beetle (Pseudohylesinus nebulosus), trees affected by them, management strategies, along with pests and pathogens with similar symptoms.

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UCCE Humboldt - Del Norte Counties: Page

Douglas-fir Engraver Beetle (Scolytus unispinosus)

Summary of Douglas-fir Engraver Beetle (Scolytus unispinosus), trees affected by them, management strategies, along with pests and pathogens with similar display of symptoms on trees

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UCCE Humboldt - Del Norte Counties: Page

Douglas-fir Twig Weevil (Cylindrocopturus furnissi)

Summary of Douglas-fir Twig Weevil (Cylindrocopturus furnissi), trees affected by them, management strategies, along with pests and pathogens with similar display of symptoms on trees

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UCCE Humboldt - Del Norte Counties: Page

Phomopsis Canker of Douglas-fir (Phomopsis lokoyae)

Summary of Phomopsis Canker of Douglas-fir (Phomopsis lokoyae), trees affected by them, management strategies, along with pests and pathogens with similar display of symptoms on trees

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