| ISSUES | ARTICLES | DOWNLOAD FILES |
2024, Vol 25, Summer | TOPICS IN THIS ISSUE: | |
| - 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)
| PDF |
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
| PDF |
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
| PDF |
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
| PDF |
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.
| PDF |
2023, Vol 23, Spring | TOPICS IN THIS ISSUE:
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| - 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
| PDF |
2023, Vol 23, Winter | TOPICS IN THIS ISSUE:
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| - 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
| PDF |
2022, Vol 22, Fall | TOPICS IN THIS ISSUE:
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| - 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:
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| - 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
| Topics in Subtropics spring 2022 |
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
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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
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| 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
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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
- New Guidelines for Laurel Wilt Disease
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| 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?
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| 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
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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
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| 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 | Topics in Subtroics Vol. 12, No. 3 |
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 | |
