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Topics in Subtropics
The University of California Cooperative Extension Farm Advisors have combined to publish this quarterly combined newsletter. It will emphasize citrus and avocado, but will also discuss the minor su
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Issue Articles
Volume 6, No.1 January-March 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 Dosesn't Mean You Should
  • Brevipalpus Mites and Citrus Leprosis Virus Disease
Volume 5, No.4 Fall 2007
  • Grower Cooperators Deserve Recognition for Service to Their Industries
  • Citrus Leaf Miner Update
  • Stubborn Disease of Citrus in California
  • New Avocado Publication
Volume 5, No.3 July-September 2007
  • Leaf Analysis
  • Citrus Leafminer Update
  • Are all Phosphorous Products the Same
  • Financial Statements and Ratios
Volume 5, No. 2--April-June 2007
  • Update on Lychee and Longan Fild 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 California
Volume 5, no. 1 -- Jan-March 2007
  • An Introduction to the Problem of Honey Bees and Mandarins
  • Birds do it; Bees do it, Even Citrus with Seeds do (did) it. Part1-The Biology Behind Seedlessness in Mandarins
  • Honey Bees in California
Rehabilitation of Freeze-Damaged Citrus and Avocado Trees This is not a newsletter, however, I thought you could use the information.

Ben Faber
Living with Fire This is not a newsletter, it is information about caring for fire damaged trees.
Volume 4, No. 4 -- October-December 2006
  • Boron is High in Many Southern San Joaquin Valley Citrus Trees
  • Armillaria Root Rot
  • Soil Test Kits
  • Using Evapotranspiration (ETo) for Scheduling Irrigations-An Improvement on "Guessing"
  • Subtropical Crops Program Coverage in Riverside County
Volume 4, No. 3 - July - September 2006
  • 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&Extension
Volume 4, No. 2 - April-June 2006
  • Citrus Research Growers' Seminars 2006
  • Dry Rot in Citrus
  • Earwigs Flying Under the Radar of Many Citrus Pest Control Advisors
  • New Tools Available for Spider Mite Management in 2006
  • Product Testing
Volume 4, No. 1 - January-March 2006
  • Liquid-Sugar Ant Bait Stations are Nearing Registration for Agriculture
  • Huanglongbing, Citrus Greening: Preparing For the Future
  • Citrus Herbicide Charts&Tables Kurt Hembree/Farm Advisor, Fresno County
  • Bear Citrus Thrips Resistance in Mind When Deciding Whether&How to Treat in 2006
Volume 3, No.4--September-December 2005
  • Management of Banks Grass Mite in Dates
  • UC Riverside Citrus Variety Collection
  • Diapres Root Weevil Infestations Found in Southern California a Recent Exotic Pest Invasion
  • Diaprepes Quarantine Details
Volume 3 No. 3 - July-August-September 2005
  • 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 Advisory
Volume 3 No.2 - April May June 2005
  • Citrus Leafminer, New Pest for Southern California
  • Ag Waivers
  • Super-Early--Season Satsuma Mandarins for San Joaquin Valley and California
  • Protecting Workers From Heat Strees
Volume 3 No.1 - January February March 2005
  • 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 Virus
Volume2, No.4--October-December 2004
  • Upcoming Meetings
  • Avocado Lace Bug
  • The First Rule of Growing Citrus in the San Joaquin Valley: Location, Location, Location
  • The Inland Empire Small Farm Inititative: Promoting Small Farm and Hispanic Economic Development in Riverside and San Bernardino Counties
  • Cellulase Production by Various Sources of Mulch
Volume 2, No.3 -- July-September 2004
  • Upcoming Meetings
  • Deficit Irrigation
  • Topworking or Replanting-A Grower's Perspective
Volume 2, No.2--April-June 2004
  • 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 Mandarins
Volume 2, No.1 -- January-March 2004
  • UC Publications&Meetings
  • Verteberate Pests Causing Damage in Citrus
  • After the Fire in the Avocado Grove--Replant or Sucker Graft
  • Compatibility/Seediness Among Clementine Mandarins....
  • 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 Valley
Volume 1 No.4--October - December 2003
  • Irrigation on Slopes
  • Pollination & Seeding of Clementines
  • Weed Control Practices and Costs
  • Farm Mapping
  • Calculating Value of Tree Loss
  • Nick Sakovich Retires
  • USDA Emergency Loans for Fire Losses
  • Educational Opportunities
Volume 1 No.3--July-September, 2003
  • Citrus Fall Tissue Sampling
  • Invasive species
  • Avocado Planting Holes
  • Production Quiz
  • Puncture Vine
  • Avocado Rootstocks
  • Charlie Coggins Scholarship Fund
Volume 1 No.2 -- April-June, 2003
  • Who are We
  • Citrus Leafminer
  • Medjool Dates
  • Pruning Avocado
  • Dry Root Rot of Citrus
  • Upcoming Meetings
  • UC Farm Advisor Listing
Volume1 No. 1 - January, February, March 2003
  • The Mexican Fruit Fly Quarantine...A Caution for All Growers in California
  • Lychee and Longan--New Crops for California
  • Bees and Mandarins--The New Range War
  • Resource and Market Information for Enterprise Selection
  • A Message from Dr. France Cordova, Chancellor at UC Riverside