Topics in Subtropics Newsletter

• Effectiveness of Asian citrus psyllid management in huanglongbing treatment zones in residential Southern California
• Managed honeybees in a wet year
• Threats to citrus orchards in California by synergistic effects of dry root rot and phytophthora root and crown rot
• Microbial Safety in Avocado Farms
• How Much Fruit is Up there?
• Tiny Troublemakers: How Geminiviruses are affecting California's Crops
• Citrus Leprosis Disease – Staying alert on potential threat to California’s citrus industry

• IRCHLB?
• Pocket Gopher Management
• Phytophthora Diseases of California Citrus
• Airblast Sprayers
• Temperature Inversion Data Helps Guide Frost Responses
• Bodil Cass - New Subtropical Fruit IPM Specialist

• Avocado Sunblotch Viroid Disease and Challenges to Tackle
• Citrus yellow vein clearing virus, a new citrus pathogen identified in the San Joaquin Valley of California
• A pictorial guide to rind scarring damage on mandarins and sweet orange published!
• Insects in Common to Avocado and Introduced Habitat Gardens

• Introducing Fatemeh Khodadadi Assistant Professor of Extension and Plant Pathologist
• Agave Mites:  A Tiny Menace
• New pest in young avocado orchards
• Planting Avocados
• One, one hundred, one thousand
• UCR Citrus Day, March 2, 2023

• Mycorrhizae:  An Underground Support Network for Trees
• Notes on Applying Gibberellic Acid (GA3) to Navel Orange and other Citrus in the San Joaquin Valley of California
• Saline Waters - A Growing Problem
• 35th Anniversary of the Nematode Quarantine Facility at the University of California Riverside 

• Natural enemies have significantly suppressed Asian Citrus Psyllid populations in southern California
• Synergized IPM of Argentine and biocontrol of sap sucking pests with biodegradable hydrogels, infra-red sensors, and cover crops in commercial citrus orchards
• Irrigation Stress and Early-Navel Fruit Maturity
• High Density Citrus Planting
• Eric Mussen, Apiculturist Passes 

• Phytophythora diseases associated with citrus in California
• Is it root rot? Or? The 12 signs of Avocado Root Rot
• New avocado irrigation study
• GEM vs Hass?
• Area-Wide Treatment of ACP 

• Black Fig Fly, New invasive pest
• Branch canker and dieback diseases associated with citrus in California
• Caloptilia, no longer a new pest
• Link to Volume 20, Summer 2021 

• Progress in Developing Mechanical Harvesting for California Black Ripe 'Manzanillo' Table Olives
• Developing a Nitrogen Fertilizer Plan for Olive Orchards
• Should I Pay for Avocado Pollination Services?
• Collaboration is Key to Saving Kern County Citrus
• Are Finger Limes Just Another Fad? 

• Avocado Establishment Costs
• Soil Analysis
• Healthy Roots, Healthy Trees
• Avocado Weed Control
• Salt Leaching 

• In memoriam:  George Goodall
• Promoting best practices for safe, economical and environmentally sound pesticide application with minimum environmental risks
• South American Pal Weevil:  Update
• Lemon establishment and production costs and profitability analysis in Ventura County, 2020
• Brief update on ACP/HLB in California with emphasis on the San Joaquin Valley   

• Proactive Management of the Avocado Seed Weevil, Heilipus lauri
• False Chinch Bug in New Avocado Plantings
• Snapshot:  The Mexican Date Industry
• Removing Avocado Suckers with Glyphosate
• UC Ag Experts Talk

• An Automated Delivery System for Therapeutic Materials to Treat HLB Infected Citrus
• On-Farm Research
• Citrus Dry Root Rot
• Dr. Beth Grafton-Cardwell to Retire
• What are the UC Ag Experts Talking About?
• Memorial to Dr. Travis Bean

• Leveraging the Genomic Landscape of Avocado for Breeding Purposes
• Fresh Market Raspberry in California
• Weed Management in Citrus Orchards 

• A "boring" problem that's generating a big interest in southern California
• How ants can be "good" in ag production systems
• Is Eucalyptus a Safe Material for Mulching Trees?
• Botryosphaeria Gummosis and Dieback of Citrus
• The online Lucid Key, Thrips of California has been updated      

• Introducing Your New Information Source for CDFA grants, Kern and Ventura Counties
• Spotlight on SWEEP in Citrus
• Low Pressure Guide to Low-Flow Irrigation Scheduling
• The So-Called "Leaf Fleck" Virus Diseases of Citrus 
• Replanting Trees in Mature Citrus Groves
• What About Planting Lemons in Kern County? 

• Distinguishing Between Symptoms of Drought and Root Rot in Avocado
• Avocado Trunk Cankers
• Viruses Are Our Friends-and Maybe for Citrus Too
• Ground Squirrel and Other Vertebrate Control
• Meet our new Citrus Specialist at UC Riverside/Lindcove
• Meet our new Extension Tree Crops Spray Application Engineer
• UC Ag Experts Talk    

• California Citrus Network: an online forum
• High Density Planting Production: A Chilean Perspective
• Avocado Brainstorming 2018
• Meet our new subtropical crops specialist at UC Riverside  

• Native Pollinators of California Avocado as Affected by Introduced Pollinator Gardens
• Which Way World Avocados?
• Evaluating Cost Effectiveness of High Density Planting of Avocados: Experiment on Water and Pruning
• Herbicide injury in avocado

• A Taste of Coffee
• Colletotrichum Shoot Dieback: A New Disease of Citrus in California
• Successfully Irrigating Potted Trees
• An Update on Huanglongbing Disease of Citrus in California 

• South American Palm Weevil is threat to Coachella Valley Date and Ornamental Palm Growers
• Template for Estimating Value of Tree Loss
• After the Fire and Before the Rain, What to Do

TOPICS IN THIS ISSUE:

• Ah, Rats!
• So You Want To Install Soil Moisture Meters?
• Notes on Applying Gibberellic Acid (GA) to Navels in the Southern San Joaquin Valley of California
• Fall Leaf Tissue Sampling
• FREE! Citrus: UC IPM Pest Management Guidelines

• Why has California red scale been so difficult to control?
• Navel Orange Nitrogen Fertilization
• Recent advances in understanding the history of olive domestication

Volume 15, Issue 1

• Blast from the Past-An Old Spacing Trial Revisited
• Shoot and Twig Dieback of Clementine, Mandarin and Navel Orange Varieties in California
• New Crops, Also Known As....
• A Comment from the Citrus Research Board on the Upcoming Referendum

Volume 14 No. 4

• Real-Time Sensor For Early Detection of HLB
• 2016 International Citrus Conference
• Management of Ambrosia Beetles in California Avocados
• An Overview of Mango

Volume 14   No.2

Volume 14  No. 1

Volume 13  No. 4

Volume 13  No. 3

Volume 13 No. 2

Volume 13 No. 1        February - April, 2015

Centennial Celebration - Thursday, August 21, 2014 - Kern Ag Pavilion

Kern Spring Citrus Meeting

Thursday, May, 2, 2013, 1:00 p.m. to 4:45 p.m.

UCCE Kern Conference Room

UC Riverside Citrus Day For Industry

Thursday, January 31, 2013 - 9 a.m. to 3:30 p.m.

UCR Agricultural Operations, Riverside, California

Topics in Subtropics Newsletter contents:

-Vertebrate Damage
-Chemical Thinning of Olives
-Vertibrate Damage
-Tips on Producing the Earliest Citrus in the San Joaquin Valley
-Herbicide Registration Chart
-Resource and Market Information for Enterprise Selection

-Organic Herbicides:  Do They Work?
-Snake Oil:  Horticultural Myths and Legends
-Success Story before there is a problem