Agricultural Economics
University of California
Agricultural Economics

Topics for Subtropics Newsletters

This webpage houses the Topics for Subtropics newsletters for 2020-2010.  To retrieve newsletters for later years click on archive link to retrieve 2009-2003 newsletters: Archive

Newsletters 2010-2022

 

ISSUES 

ARTICLES 

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2022,  Vol 22,

Fall 

TOPICS IN THIS ISSUE: 

 

 

  • 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

PDF

2022, Vol 22,

Summer 

TOPICS IN THIS ISSUE: 

 

 

  • 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

PDF

2022, Vol 22, 

Spring 

TOPICS IN THIS ISSUE: 

 

 
  • 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

PDF

2022, Vol 22, Winter
TOPICS IN THIS ISSUE: 

 

 
  • 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

PDF

2021, Vol 20, Fall  TOPICS IN THIS ISSUE: 

 

 
  • 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

PDF

2021, Vol 19, Winter TOPICS IN THIS ISSUE: 

PDF

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

 

2020, Vol 18, Fall
TOPICS IN THIS ISSUE:

PDF

 
  • 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
 
2020, Vol 18, Summer TOPICS IN THIS ISSUE:

PDF

 
  • 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

 TOPICS IN THIS ISSUE:  
 
  • 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 
PDF
2020, Vol 21, Winter TOPICS IN THIS ISSUE: PDF
 
  • 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

 

2019, Vol 21, Fall TOPICS IN THIS ISSUE:

PDF

 
  • 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)

 

2019, Vol 20, Summer TOPICS IN THIS ISSUE:

PDF

 
  • 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)

 

2019, Vol 19 Spring TOPICS IN THIS ISSUE: PDF
 
  • 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?
 
2019, Vol 18, Winter TOPICS IN THIS ISSUE:

PDF

 
  • 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

 

2018, Vol.17, Fall TOPICS IN THIS ISSUE:

PDF

 

  • 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

TOPICS IN THIS ISSUE: PDF

 

  • 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 

TOPICS IN THIS ISSUE: PDF
 
  • 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
 
2018, Vol.16, Winter TOPICS IN THIS ISSUE: PDF
 
  • 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

 TOPICS IN THIS ISSUE:  PDF
 
  • 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
 
2017, Vol.15, No.1  TOPICS IN THIS ISSUE:  PDF
 
  • A Blast from the Past, An Old Spacing Trial Revisited
  • Shoot and Twig Dieback
  • New Crops aka SpecialtyCrops aka Alternative Crops
  • Referendum Comments
 
2017, Vol.14, No.5

 TOPICS IN THIS ISSUE:

 PDF
 
  • 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

 

 
2016, Vol.14, No.4   TOPICS IN THIS ISSUE:  PDF

 

  • 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
 
2016, Vol.14, No.2  

TOPICS IN THIS ISSUE:

 PDF
 
  • “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
 
2016, Vol.14, No.1  

TOPICS IN THIS ISSUE:

 PDF
 
  • Avocado Cultivars
  • Botanical Races and Genetic Footprints
  • Drought Induced Problems in Our Orchards
 
2015, Vol.13, No.4  TOPICS IN THIS ISSUE:  PDF
 
  • 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
 
2015, Vol.13,  No. 3  INTRODUCTION AND NEW RESEARCH:  PDF
   Predicting Water Demand Along the Coast Versus in the Valley ?  
   Avocado Farm Families Still Healing, More Than a Decade Later: What Lessons Have We Learned About Fire Readiness and Prevention?  
   Olive oil chemistry – Let’s talk about quality  
   Announcements:  
   Breakfast IPM Meeting: Citrus IPM and Chlorpyrifos Regulatory Update  
   Macadamia Association Annual Field Day  
     
2015, Vol.13,  No. 2 INTRODUCTION AND NEW RESEARCH  PDF
  Did a Newly Introduced Fukumoto Navel Budline from Spain Perform Better than the California Budline in the San Joaquin Valley?  
  What values should olive growers use for estimating crop nitrogen removal at harvest?   
   UPCOMING COURSES:  
   UC Davis Olive Center: UC Master Milling Certificate Course   
   Polyphagous shot hole borer (PSHB) update for avocado growers  
   Weed Management in Citrus  
     
2015, Vol.13, No. 1  TOPICS IN THIS ISSUE:  PDF
   Polyphagous shot hole borer (PSHB) update for avocado growers  
   Weed Management in Citrus  
   UC Davis Olive Center: Sensory Evaluation of Olive Oil Certificate Courses  
   Water Terminology  
  Olive Quick Decline in Italy is associated with unique strain of Xylella fastidiosa  
2014,  Vol. 12, No. 3  TOPICS IN THIS ISSUE:  

 

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

 PDF

2014,  Vol. 12, No.2

 TOPICS IN THIS ISSUE:  PDF
   Vole Damage to Citrus   
  Time to Go Fishing!   
  "Meyer" Lemon and C-35 Citrange Rootstock  
  Are Hops a Serious Option for a Crop in San Diego County?   
     
2014,  Vol. 12, No.1  The Spanish Avocado Industry   PDF
  Strategizing for Water Cutbacks - Avocado and Citrus   
  California Agricultural Production Statistics   
  Maintaining the Citrus Orchard with a Reduced Irrigation Allotment   
  The 2014 Drought in California   
     
2013,  Vol. 11, No. 4 Rehabilitating Frost Damaged Citrus and Avocado  PDF
  Advances in Mitigation of Alternate bearing of Olive: Vegetative Growth Response to Plant Growth Regulators  
  Fertigation – Measuring Uniformity  
  Olive Fly Update  
     
2013,  Vol. 11, No. 3 A Caution on Free “Compost/Mulch”  PDF
  Oriental Fruit Fly Affects Green Waste Movement in Southern California  
  Olive Tree Phenology  
  Training and Pruning of Cherimoya  
  High Density Avocado Installation: Use a quick cost study to make a decision  
  Volatile Organic Compound (VOC) Emissions from Pesticides  
     
2013,  Vol. 11, No. 2 Cultural Practices to Reduce Pest and Disease in Avocado and Citrus  PDF
  Polyphagous Shot Hole Borer in California  
  Electronic “sniffer” for Detecting HLB  
  Important Information Sources Related to Fire Management and Protection  
  Bee kill in Oregon – A reminder of pesticide use  
     
2013,  Vol. 11, No. 1 Costs of Orchard Establishment and Production Summary for Avocados in California  PDF
  Huanglongbing Conference, Florida  
  Going Out of Business in the Citrus Business – Doing it the Right Way  
  The Avocado: Botany, Production and Uses, 2nd Edition  
  Winter Irrigation Update from Israel on the Polyphagous  
  Shot Hole Borer and Fusarium symbiont  

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