Regional newsletter for Southern California covering production information for citrus, avocado, and other subtropical crops
Vol 19, Winter 2021
Mar 9, 2021
TOPICS IN THIS ISSUE–Ben Faber, Farm Advisor
- Avocado Establishment Costs
- Soil Analysis
- Healthy Roots, Healthy Tree
- Avocado Weed Control
- Salt Leaching
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Vol 18, Fall 2020
Nov 20, 2020
TOPICS IN THIS ISSUE; Greg Douhan, Farm Advisor
- 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
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Vol 18, Summer 2020
Oct 5, 2020
TOPICS IN THIS ISSUE: Ashraf El-kereamy, Editor
- 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
Download (2,524KB PDF)
Vol 22, Winter, 2020
May 4, 2020
TOPICS IN THIS ISSUE – Sonia Rios, Editor
• 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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Vol.21, Fall, 2019
Feb 5, 2020
TOPICS IN THIS ISSUE – P. Rolshausen, Editor
- 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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Volumn 20, Summer 2019
Jan 14, 2020
TOPICS IN THIS ISSUE – Monique Rivera, Editor
- 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)
Download (1,601KB PDF)
Vol.19 Spring-2019
Aug 21, 2019
TOPICS IN THIS ISSUE
- 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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Vol.18 Winter-2019
Apr 22, 2019
TOPICS IN THIS ISSUE:
- 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
Download (1,471KB PDF)
Vol.17 Fall-2018
Jan 10, 2019
TOPICS IN THIS ISSUE:
• 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
Download (1,626KB PDF)
Vol.17 Summer-2018
Sep 18, 2018
TOPICS IN THIS ISSUE:
- 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 avocados
Download (937KB PDF)
Vol.17 Spring-2018
Jan 10, 2019
TOPICS IN THIS ISSUE:
- 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
Download (1,915KB PDF)
Volume 16, Winter 2018
Feb 26, 2018
TOPICS IN THIS ISSUE:
- South American Palm Weevil is a Threat to Coachella Valley Date and Ornamental Palm Growers
- A Template for Estimating Value of Tree Loss
- After the Fire and Before the Rain, What to Do
Download (1,315KB PDF)
Vol.15 Fall-2017
Jan 4, 2018
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
Download (750KB PDF)
Vol.15 No.1 Jan-March, 2017
Jan 4, 2018
IN THIS ISSUE:
- Revisiting an old study
- Shoot and Twig Dieback
- Alternative Crops
- Referendum Comments
Download (1,001KB PDF)
Vol. 14 No. 5 June, 2017
Jun 16, 2017
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
Download (985KB PDF)
Vol.14, No.4 Nov, 2016
Jan 5, 2018
IN THIS ISSUE:
- 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
Download (9,171KB PDF)
Vol.14, No.1 Jan-March, 2016
Jan 5, 2018
TOPICS IN THIS ISSUE:
- Avocado Cultivars
- Botanical Races and Genetic Footprints
- Drought Induced Problems in Our Orchards
Download (936KB PDF)
Vol.13, No.4 Oct-Dec, 2015
Jan 5, 2018
TOPICS IN THIS ISSUE:
- 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 Groves
Download (1,733KB PDF)
Vol.13, No.3 Fall 2015
Sep 4, 2015
INTRODUCTION AND NEW RESEARCH:
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
Download (768KB PDF)
Vol.13 No.2 Summer 2015
Jun 22, 2015
IN THIS ISSUE:
INTRODUCTION AND NEW RESEARCH
• 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
Download (1,101KB PDF)
Vol.13 No.1, Feb-April, 2015
Mar 31, 2015
IN THIS ISSUE:
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
Download (782KB PDF)
Vol.12 No.3 Sep-Dec, 2014
Dec 9, 2014
IN THIS ISSUE:
- The Clegg Collection: A valuable resource
- Impact of recent drought conditions
- Zinc & Phosphorus
- Recent findings on Polyphagouse shot hole borer/Fusarium dieback on avocado
Download (1,181KB PDF)
April 7, 2014
Apr 7, 2014
The Spanish Avocado Industry
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
Download (835KB PDF)
2013, Vol. 11, No. 3
Oct 15, 2013
A Caution on Free “Compost/Mulch”
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
Download (483KB PDF)
2013, Vol. 11, No. 2
Jul 15, 2013
Cultural Practices to Reduce Pest and Disease in Avocado and Citrus
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
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2013, Vol. 11, No. 1
Mar 26, 2013
Costs of Orchard Establishment and Production Summary for Avocados in California
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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2012, Vol. 10, No. 3
Jan 3, 2013
Asian Citrus Psyllid Quarantines
Decline of Oranges and Mandarins
Mitigation of Alternate Bearing in Olive
Alternate Bearing in Mandarin
Download (1,232KB PDF)
2012, Vol. 10, No. 2
Sep 21, 2012
Simazine Degradation in CA Citrus Orchards
Lime-induced Iron Chlorosis
Avocado Trunk Cankers
Asphyxiation
Tree Wraps
Stem and Leaf Blight
Download (1,322KB PDF)
2012, Vol. 10, No. 1
Sep 20, 2012
Quarantine for Huanglongbing Declared in Hacienda Heights Section of Los Angeles County
An Outline of Management Options for HLB in Florida
Avocado Farming with High Priced Water
Soil Moisture Sensors
Download (1,306KB PDF)
2011, Vol. 9, No. 2
Jan 23, 2012
Resource and Market Information for Enterprise Selection
Download (1,347KB PDF)
2011, Vol. 9, No. 1
Aug 15, 2011
Organic Herbicides: Do They Work?
Snake Oil: Horticultural Myths and Legends
Success Story Before There is a Problem
Download (1,059KB PDF)
2010, Vol. 8, No. 3
Oct 20, 2010
An update on the threat of Asian citrus psyllid and Huanglongbing for citrus The Search for Salinity Tolerance in Avocado: An Update on a Frozen Rootstock Trial Activator Spray Adjuvant Selection: Crop Spraying Conservation Programs Deadline Set For 2011 Funding: NRCS-Natural Resources Conservation Services News ReleaseDownload (PDF)
2010, Vol. 8, No. 2
Jun 3, 2010
NRCS Announces Initiative to Improve Agricultural Energy Efficiency Periwinkle Provides Ammunition In The War On Citrus Plague Do we really need Scientific Irrigation Scheduling? Farmers Should Make a Skin Check a Priority Feeding Habits of California Ground Squirrels and their Role in Management Squirrel Calendar - English Squirrel Calendar – SpanishDownload (PDF)
2010, Vol. 8, No. 1
Jun 3, 2010
Microirrigation, Fertilizers and Clogging Chemical Treatment to Prevent System Clogging Cultural Practices to Reduce Pest and Disease in Avocado and Citrus Laurel Wilt Update The Parent Washington navel orange tree—Part2. Its decline and recoveryDownload (PDF)
2009, Vol. 7, No. 4
Jan 22, 2010
The state of Dothiorella Canker on Avocado in California The Parent Washington navel orange tree- It’s first yearsvChester N Roistacher Retired Citrus Virologist, University of California, Riverside Mechanical Harvesting of California Table and Oil OlivesDownload (PDF)
2009, Vol. 7, No. 3
Oct 21, 2009
'Valentine' A Recently Released Anthocyaninpigmented Pummelo Hybrid Developed at the University of California Riverside The University of California - Riverside Citrus Variety Collection and Citrus Clonal Protection Program Websites Provide Information, Photographs, Fruit Quality Data and More Water Infiltration Problems Attention San Joaquin Valley Citrus Growers: What Do You Plan to Do If It Comes For You?Download (PDF)
2009, Vol. 7, No. 2
Jul 22, 2009
Ag Waivers for San Diego County Spray Adjuvants; what's in a Name? Strategizing for Water Cutbacks is there a Logical Method?Download (PDF)
2009, Vol. 7, No. 1
Apr 1, 2009
Avocado Research in Ventura County Laurel Wilt Disease Conference and Tour in Florida and Georgia Managing Insecticide Resistance will be Key to the Future of Effective Citrus Pest Management Smart Sprayers Make SenseDownload (PDF)
2008, Vol. 6, No. 4
Jan 22, 2009
Dothiorella Leaf and Stem Blight Pathogens: Botryosphaeria and Fusicoccum spp. Irrigation Stress and Early-Navel Fruit MaturityDownload (PDF)
2008, Vol. 6, No. 3
Sep 16, 2008
New Registration for the Biocontrol Plantshield HC Against Hyphoderma Gummosis of Citrus Atmometers for Irrigation Management Asian Citrus Psyllid Has Arrived in San Diego CountyDownload (PDF)
2008, Vol. 6, No. 1
Apr 18, 2008
Evaluation of Insecticides for Citrus Thrips Control, Using Blueberries as a Crop Surrogate The Silver Mite Workgroup Just Because Spring is a Good Time to Prune Navel Orange Doesn't Mean You Should Brevipalpus Mites and Citrus Leprosis Virus DiseaseDownload (PDF)
2007, Vol. 5, No. 4
Feb 2, 2010
Grower Cooperators Deserve Recognition for Service to Their Industries Citrus Leaf Miner Update Stubborn Disease of Citrus in California New Avocado PublicationDownload (PDF)
2007, Vol. 5, No.3
Jul 29, 2008
Leaf Analysis; Citrus Leaf Minor Update; Are all Phosphourous Products the Same; Analyzing the Farm Business: Most common Financial Statements and RatiosDownload (PDF)
2007, Vol. 5, No. 2
Jul 10, 2008
Update on Lychee and Longan Field Trials and Plantings in Southern California Loopers in Avocados-A Note from San Diego County The 2007 Citrus Tristeza Virus Situation at the University of California Lindcove Research and Extension Center Errata: Honey Bees in CaliforniaDownload (PDF)
2007, Vol. 5, No. 1
Aug 24, 2009
An Introduction to the Problem of Honey Bees and Mandarins Birds to it; Bees do it, Even Citrus with Seeds do (did) it. Part 1-The Biology Behind Seedlessness in Mandarins Honey Bees in CaliforniaDownload (PDF)
2006, Vol. 4, No. 4
Dec 20, 2007
Boron is High in Many Southern San Joaquin Valley Citrus Trees Armillaria Root Rot Soil Test Kits Using Evapotranspiration (ETo) for Scheduling Irrigation-An Improvement on "Guessing" Subtropical Crops Program Coverage in Riverside CountyDownload (PDF)
2006, Vol. 4, No. 3
Oct 29, 2010
The Positive Points Systems for Citrus: What is it and Why Should a Grower Get Involved? Getting Horseweed and Hairy Fleabane Back Under Control in Central California A Comparison of the New "Sequoia" Fig Cultivar A Celebration of Agricultural Research and ExtensionDownload (PDF)
2006, Vol. 4, No. 2
Feb 7, 2011
Citrus Research Growers' Seminars 2006 Dry Root Rot in Citrus Earwigs Flying Under the Radar of Many Citrus Pest Control Advisors New Tools Available for Spider Mite Management in 2006 Product TestingDownload (PDF)
2006, Vol. 4, No. 1
May 24, 2011
Liquid-Sugar Ant Bait Stations are Nearing Registration for Agriculture Huanglongbing, Citrus Greening: Preparing For the Future Citrus Herbicide Charts & Tables Bear Citrus Thrips Resistance in Mind When Deciding Whether & How to Treat in 2006Download (PDF)
2005, Vol. 3, No. 4
Jan 25, 2010
UC RIVERSIDE CITRUS VARIETY COLLECTION DIAPREPES ROOT WEEVIL INFESTATIONS FOUND IN SOUTHERN CALIFORNIA A RECENT EXOTIC PEST INVASION DIAPREPES QUARANTINE DETAILSDownload (PDF)
2005, Vol. 3, No. 3
May 24, 2011
Little Evidence to support the use of foliar applied nutrients in avocado; Web sites that can help your production; Cutoff deadline set for landowners applying for 2006 EQIP funds; Intensive training course on “How to export your food or agricultural product”; Cal/OSHA heat advisoryDownload (PDF)
2005, Vol. 3, No. 1
Sep 3, 2009
Inside this issue: Phosphorous Acid in Avocado Production Should it be a Cultural Recommendation? Emergency Farm Loans New 24C Registration of Isopropyl Ester 2,4-D (Alco Citrus Fix) for Fruit Size Increase of Mandarins and Mandarin Hybrids in California Asphyxiation Dweet Mottle Virus and Citrus Leaf Blotch VirusDownload (PDF)
2004, No. 4
May 24, 2011
Avocado Lace Bug The First Rule of Growing Citrus in the San Joaquin Valley: Location, Location, Location The Inland Empire Small Farm Initiative: Promoting Small Farm and Hispanic Economic Development in Riverside and San Bernardino Counties Cellulase Production by Various Sources of MulchDownload (PDF)
2004, No. 3
Dec 8, 2009
TOPICS IN THIS ISSUE: Upcoming Meetings, Deficit Irrigation, Topworking or Replanting-A Grower’s Perspective?, Weed control options for citrusDownload (PDF)
2004, No. 2
Apr 15, 2010
Upcoming Meetings Mechanical Pruning and Harvesting Olives One, One Hundred, One Thousand Making Sense of Soil Moisture Checking and Sensors Think Twice Before Planting Clementine and W. Murcott Afourer MandarinsDownload (PDF)
2004, No. 1
May 24, 2011
TOPICS INCLUDE: - Vertebrate Pests Causing Damage in Citrus - After the Fire in the Avocado Grove – Replant or Sucker Graft? - Compatibility/Seediness Among ClementineMandarins - Irrigation Scheduling - An Update of Agricultural Waivers in CA – - Water Quality Programs for Irrigated Agriculture - Integrating Admire Treatments for GWSS with - Citrus IPM in the San Joaquin ValleyDownload (PDF)
2003, No. 1
May 24, 2011
This newsletter covers production of citrus, avocado and other subtropical tree fruit crops. It is written by the Farm Advisors who work with subtropical crops. It will be distributed every 3 to 4 months. The UC Farm Advisors will take turns editing it.Download (PDF)