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2024, Vol 25,  Summer

TOPICS IN THIS ISSUE:

This edition includes the following: 

• Cherimoya Growers Handbook Available On-Line
• Learning From the Rain
• Optimizing Avocado Irrigation Management Practices Using Soil Moisture Sensing
• Pest Alert: Fig Wax Scale
• Ag Labor Management Resources
• Upcoming Meetings
  • Avocado Irrigation workshops
  • Avocado Sunblotch Viroid (ASBVd)

Topics_in_Subtropics_Summer Issue_2024 final eta

2024, Vol 25,  Spring

TOPICS IN THIS ISSUE:

• 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

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2024, Vol 25,  Winter

TOPICS IN THIS ISSUE:

• California inundated with invasive fruit flies
• Satellite-based irrigation tools to manage irrigation water more precisely in avocado groves
• Managing citrus mealybug-does ant control help?
• Phytoplasma Diseases of Palms in the USA
• Understanding fruit fly quarantines
• Cultivating Citrus Resilience to HLB in California 
• Phenology and the Avocado
• The Annual California Avocado Society Meeting
• Pre-bloom foliar boron application on olive may improve yield

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2023, Vol 24,  Fall

TOPICS IN THIS ISSUE:

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

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2023, Vol 23, 

Summer

TOPICS IN THIS ISSUE: 

• Avocado Production in the World: Observations of production and consumption growth. 
• USDA-APHIS Approves New Fuller Rose Beetle Mitigation-a Voluntary Option to Reduce Pesticide Applications. 
• DONT'S-Suggestions for Citrus and Avocado Growers and Others 
• California Efforts to Control Citrus HLB
• Dr. Hamutahl Cohen was appointed as an Entomology Advisor with UC Cooperative Extension in Ventura County.

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2023,  Vol 23,

Spring

• Avocado Sunblotch Viroid Disease and Challenges to Tackle 
• Citrus yellow ovein 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 

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2023,  Vol 23,

Winter

• 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, on thousand
• UCR Citrus Day, March 2, 2023

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2022,  Vol 22,

Fall 

• Mycorrhizae: An Underground Support Network for Trees. 
• Notes on Applying Gibberellic Acid (GAS3) 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

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2022, Vol 22,

Summer 

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

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2022, Vol 22, 

Spring 

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

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• Area-Wide Treatment of ACPMandarin Rind Breakdown
• A Great Friend and Farmer Has Passed, James Lloyd-Butler
• Calculating the Value of a Lemon Tree Loss

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• Estimating Nitrogen Credits From Organic Matter Sources in Orchards
• Timing Ethylene Applications as a Function of Heat Unit Accumulation.
• Summary of International Avocado Irrigation Trends
• The Avocado War has Lost a Star

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

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• In memoriam: George Goodall
• Promoting best practices for safe,
  economical and environmentally sound pesticide application with minimum environmental risks
• South American Palm 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

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

2020, Vol 18, Spring

• 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 

• Rattlesnakes in California
  Orchards: Growers Beware -
  Sonia Rios and Roger A. Baldwin

• What’s All The Fuss Over Spotted Lantern Fly? - Mark Hoddle

• Frost Freeze Recovery from
  February 2020 Sonia Rios and Ben Faber

• Covid Virus Resources

• New Guidelines for Laurel Wilt Disease

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• Leveraging the Genomic Landscape of
  Avocado for Breeding Purposes (Vanessa
  Ashworth and Philippe Rolshausen)
• Fresh Market Raspberry in California
  (Natalie Solares and Alexander Putman)
• Weed Management in Citrus Orchards
  (Travis Bean)

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• A “boring” problem that’s generating a
  big interest in southern California (Deena
  Husein)
• How ants can be “good” in ag
  production systems (Madison Sankovitz)
• Is Eucalyptus a Safe Material for
  Mulching Trees? (Ben Faber & James
  Downer)
• Botryosphaeria Gummosis and Dieback
  of Citrus (Dee Vega)
• The online Lucid Key, Thrips of California,
  has been updated (Mark Hoddle)

• 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?

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• 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

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• California Citrus Network: an online forum to facilitate communication and
  information exchange regarding California citrus
• High-Density Planting for Avocado
  Production: A Chilean Perspective
• Avocado Brainstorming 2018
• Meet our new subtropical crops specialist
  at UC Riverside

2018 Vol.17, Spring

• 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

2018  Vol.17, Summer 

• 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 of Water and Pruning
• Herbicide injury in avocados

• South American Palm Weevil is a Threat to Coachella Valley Dates and Ornamental Palm Grower
• A Template for Estimating Value of Tree Loss
• After the Fire and Before the Rain, What to do.

2017, Vol.15, Fall

• 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

• A Blast from the Past, An Old Spacing Trial Revisited
• Shoot and Twig Dieback
• New Crops aka SpecialtyCrops aka Alternative Crops
• Referendum Comments

 TOPICS IN THIS ISSUE:

• Why has California red scale been so difficult to control?
• Navel Orange Nitrogen Fertilization
• Recent Advances in Understanding the History of Olive Domestication
• Upcoming UC Olive Center Events

• Real-Time Sensor for Early Detection of Citrus Huanglongbing (HLB)
• The 2016 International Citrus Conference
• UC Riverside Scientists Evaluate Trunk Injections of Pesticides for The Management of Ambrosia Beetles in California Avocados
• An Overview of Mango
• Water Based Latex Paint as a Means to Track Ambrosia Beetle Activity on Infested Trees

TOPICS IN THIS ISSUE:

• “We Shall Defend our Citrus, We Shall Fight in Backyards and Community Gardens, We Shall Fight in Organic and Conventional Citrus Orchards; We Shall Never Surrender.”
• Organic Control of Asian Citrus Psyllid is Challenging
• Citrus Clonal Protection Program (CCPP) and National Clean Plant Network (NCPN): A Model System for Management of Citrus Diseases
• Discouraging citrus varieties smuggling by offering easy access to pathogen-tested budwood

TOPICS IN THIS ISSUE:

• Avocado Cultivars
• Botanical Races and Genetic Footprints
• Drought Induced Problems in Our Orchards

• Blossom End Rot of Citrus
  
• Using Organic Herbicides in Production Fields and Non-Crop Areas
  
• Pocket Gopher and Ground Squirrel Control: Management Options for Citrus and Avocado Grove

The Clegg Collection: A Valuable Resource

Impacts of the recent drought conditions on Central Coast avocado production, and potential impacts of continued drought conditions

Zinc and Phosphorus

Recent findings on polyphagous shot hole borer/Fusarium dieback on avocado

2014,  Vol. 12, No.2