We are San Diego & Riverside County Farm Advisors
HLB - Potential Threat Near San Diego County
HLB detected in Riverside County:
The Asian citrus psyllid is a tiny, mottled brown insect about the size of an aphid that poses a serious threat to all of California's varieties of citrus (e.g., oranges, grapefruit, lemons, and mandarins).
The insect is associated with the fatal citrus disease Huanglongbing (HLB), also called citrus greening disease. The psyllid takes the bacteria into its body when it feeds on bacteria-infected plants and spreads when a bacteria-carrying psyllid flies to a healthy plant and injects bacteria into it as it feeds.
HLB can kill a citrus tree in as little as five years, and there is no known cure. All commonly grown citrus varieties are susceptible to the disease.
The only way to protect trees is to prevent spread of the HLB pathogen in the first place, by controlling psyllid populations and removing and destroying any infected trees.
Learn more about HLB and how to protect your crops from it by following these links.
Distribution & Management: http://ucanr.edu/sites/ACP/
IPM Pest Notes: http://ipm.ucanr.edu/PMG/PESTNOTES/pn74155.html
California Citrus Pest & Disease Prevention Committee: https://www.cdfa.ca.gov/citruscommittee/
Topics in Subtropics Blog
Added June 22, 2018
The common question comes up all the time – “What can I grow here that will make money?” Why not lemons or avocados. The coastal California area is generally well adapted to these crops and infrastructure and markets are...
Added June 20, 2018
Here's a pretty technical report of water efficiency in avocado - the amount of water it takes to make fruit. It looks like there might be some varieties that could produce more fruit with less water. It's a promising start to selecting a tree that...
Added June 19, 2018
This is a Wilen repost: http://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=27499 I recently attended a Santa Ana River - Orange County Weed Management Area (SAROCWMA) meeting and there was the opportunity for participants to update the group about...
Added June 18, 2018
LAST DAY TO REGISTER!REGISTRATION CLOSES TODAY, MONDAY, JUNE 18, 2018 for the Citrus Growers Educational Seminar Series! CLICK HERE TO REGISTER...
Added June 18, 2018
A recent study by Joey Mayorquin and team shows a promising chemical response in sycamore trees infected with Fusarium Dieback. This holds hope for the pest/disease complex in avocado, as well. Chemical Management of Invasive Shot Hole Borer and...
Added June 15, 2018
Say what? Atmosphere meters can be used to assess irrigation requirement. Here's a great little report from Mark Battany, our advisor in Santa Barbara and San Luis Obispo Counties. ATMOMETERS FOR IRRIGATION MANAGEMENT Author: Mark...
Avocado Production in California Books
Book 1: Background Information
In Book 1, Gary S. Bender, Farm Advisor, takes you through the history of the avocado industry in California and teaches you about grove development.
Book 2: Cultural Care
Book 2 focuses on cultural care and includes articles on irrigation, fertilization, disease and insect control, vertebrate pest management, pruning and frost management. The author for most of the articles is Gary S. Bender, Farm Advisor for Subtropical Horticulture in San Diego County.