Subtropical Fruit Crops Research & Education
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Subtropical Fruit Crops Research & Education

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Ag-Field Supervisor Courses in Spanish

Spanish-language Ag Field Supervisor Courses Available at Ventura College

Applications are now being accepted for Ventura College's Agriculture Supervisor Development Program. The 12-week program consists of Spanish-language Level I and Level II courses designed to help potential front-line supervisors develop the skills to effectively lead, communicate and manage field workers while ensuring regulatory standards are met.

The Level I course is for those new to the program; the Level II course is for those who have completed the first course. The courses are designed for Spanish speakers who are learning English. All lessons will be delivered in Spanish and will include weekly English practice. Students are expected to attend all sessions, as well as the graduation celebration where students will receive a certificate of completion.

Applications to the program are now being accepted for the November 1 – February 12 session. Classes meet each Tuesday and Thursday from 9:00 a.m. – 12:00 p.m (Level I) or 2:30 p.m. – 5:30 p.m. (Level II). Courses will be held at Ventura College, Day Road Center, 71 Day Road, Ventura, CA, 93003

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learning avocados

learning avocados
learning avocados

Posted on Tuesday, October 2, 2018 at 5:20 AM
Tags: learning (1), school (2), teaching (1)

Asian Citrus Psyllid in Santa Barbara and Citrus Conference

This is a friendly reminder that the Fall ACP Area Wide Management treatment windows for Santa Barbara County are currently under way -- schedule provided below. Please be sure to notify beekeepers in your area before treating, and file your use reports with the county ASAP after finishing to ensure your treatment is acknowledged. 


Thank you to those who have already treated and filed, and those with pending treatments scheduled. The rain forecasted for this week may delay treatments, please just treat when you are able to get back into your orchard. Thank you. 


2018 Fall Treatment Schedule 

Carpinteria, Summerland, Montecito : Sept 16 to Sept 29

Santa Barbara, Goleta, Gaviota, Santa Maria etc : Sept 23 - Oct 6


CITRUS REMOVAL PROGRAM: If you have, or know of, unloved citrus that is not being cared for, the Citrus Matters ACT NOW program through CCM may be able to assist in removing it. Call 1-844-STOP-HLB (1-844-786-7452) for more information, or contact Joel Reyes at or (559) 592-3790. Abandoned or neglected citrus can also be reported to the County Ag Department.


Huanglongbing (HLB) Update

The most recent map and totals for HLB detections are posted at the website . As of September 28 the total number of trees that have tested positive for the HLB bacterium is 874, all in Los Angeles, Orange and Riverside Counties, plus a single ACP from San Bernardino that tested positive. The most recent expansion to the HLB quarantine area is in Tustin, in Orange County.  All HLB detections have been on residential properties and the infected trees have been or are being removed. No HLB has been found in commercial groves to date.


UPCOMING MEETINGS -- Agendas Attached

  • The CPDPC Operations Subcommittee meets Wed., October 3 at 9 am in Visalia. Field cleaning protocols are on the agenda again.
  • The CPDPC Outreach Subcommittee meets Wed., October 3 at 1:30 pm in Visalia.  
  • Regulatory Task Force meets October 12 at 1 pm via webinar. Mitigations for moving bulk fruit across quarantine zones will be reviewed, including field cleaning.
  • All meetings are open to the public and free to attend. Agendas for all program meetings, including webinar information, can be found here, along with minutes from previous meetings:  

Useful Links for Area Wide Management

Summaries of the latest scientific research on combating HLB:


UC recommendations for checking your trees for ACP:


UC-recommended ACP insecticides and treatment protocols, including broad, soft and organic options:


For general updates and information on the state ACP/HLB program and regional activities, go to


ACP Regional Quarantine Information for Santa Barbara County:

To move bulk citrus outside of your quarantine zone (Santa Barbara/Ventura County) you must have a compliance agreement from CDFA and follow the instructions therein. A copy of the compliance information for growers is here:

Contact the County Ag Department/Ag Commissioner's Office (805 681-5600) for more information on the regional quarantine for bulk fruit movement. 

Please keep in mind that the quarantine compliance program for moving bulk fruit is a separate and distinct program and protocol from the Area Wide Management program detailed in this email. Please feel free to contact me with any questions regarding the ACP Area Wide Management program.



Cressida Silvers

ACP/HLB Grower Liaison

Ventura, Santa Barbara and San Luis Obispo Counties

805 284-3310


2018 California Citrus Conference



Attached Files


Posted on Monday, October 1, 2018 at 11:44 AM
Tags: acp (71), adian citrus psyllid (1)

Increasing Avocado Pollinators?

Avocado is a neotropic tree which has been commercialized world-wide, yet it's native pollinators have been little studied. The most frequently studied pollinator has been the old-world insect, Apis mellifera. In commercial orchards it is common practice to introduce honey bee colonies, although it is not clear exactly what the extent of their effect is in California orchards in the presents of native bees and other pollinators. The purpose of this study is to evaluate the range of avocado flower visitors and to assess whether those numbers can be affected by the introduction of gardens that might promote their numbers in the orchards during the avocado bloom period.

Measuring pollinator performance is difficult because of weather impacts, alternate bearing habit and the high level of fruit shedding in avocado. In this study, pollination gardens have been established in three avocado orchards in coastal California near Santa Barbara, just north of Los Angeles. These gardens have been established since 2014 with a variety of perennials that can supply nectar and pollen over the year and especially during the prolonged flower season. The three orchards where the gardens are established each exceed 40 ha. Gardens have been established in just one portion of the orchards, so that flower visitation can be assessed near and far from the gardens. The individual visitation activity of flower visitors was evaluated per unit time and their abundance on avocado flowers near the gardens and away from the gardens. Visitation was also similarly assessed on the pollinator gardens. Pan traps were also used to assess the presence of native bees in the orchards.

The most abundant visitors in all years have been Syrphid spp. along with a variety of other flies and wasps. The most abundant native bee species have included Ceratina, Halictus, Agapostemon and several andrenid species. The highest diversity and abundance of visitors has occurred after the high rainfall year of 2016/17 after previous drought years.

Read more at:


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honeybee at hive

honeybee at hive
honeybee at hive

Posted on Monday, October 1, 2018 at 7:24 AM
Tags: avocado (250), bees (11), crane fly (1), honeybees (6), pollinator (2), syrphid fly (2)

Goodness Snakes Alive!


Avocado orchards are prime environments for this to happen. For me, it's always startling and amazing to come across an animal that's not expected to be there, but really does belong there as much as I do. Seeing a bobcat, coyote, or deer is not necessarily as startling as seeing a mountain lion or bear. Snakes do surprise me, especially when rooting around the base of a tree looking to see if there is trunk damage. More commonly, I come across

garter snakes


gopher snakes


king snakes



The later will eat rattlesnakes

along with garter snakes and rodents.

A recent report of a sidewinder in Ojai is a reminder of the people/wildlife interactions that go on all the time in both rural and urban areas.

Rattlesnakes do show up in coastal orchards frequently. However, it is more commonly a western rattler, not a sidewinder which is more an inhabitant of desert environments. Where did it come from? Did this snake get released into this area? Somebody's pet?  Did the recent fires open it up as new habitat? Are other changes going on in the area that make it better habitat? Is this just a one off occurrence?

Whatever, sometimes people and animals get along and sometimes they don't. Remember, if left alone, a snake is likely to move on to another area. Also, recall that most rattlesnake bites occur when inexperienced people try to pick up, pester, move, or kill a rattlesnake. If you would prefer the snake be removed, it is best to call a professional pest or wildlife control operator who specializes in snake removal.

A final course of action may be to kill the rattlesnake. However, this option is not generally recommended since rattlesnakes only bite in self-defense and attempting to kill them can, and sometimes does, result in a person getting bitten. Even a dead rattlesnake can have a bite reflex and is capable of delivering venom.

Rattlesnakes are natural and important predators and automatic killing of them is not recommended any more than is the automatic killing of coyotes, mountain lions, or bears, all of which can very rarely harm people.


Guidelines from the UC IPM Rattlesnake webpage follow:

What Can be Done to Prevent a Bite?

Hands, feet, and ankles are the most common sites for rattlesnake bites. Using some common sense rules can prevent most snakebites.

  • Never go barefoot or wear sandals when walking in areas where you cannot clearly see where you are placing your feet. Always wear hiking boots.
  • Always stay on paths. Avoid tall grass, weeds, and heavy underbrush where snakes may be present.
  • Always look for concealed snakes before picking up rocks, sticks, or firewood.
  • Always check carefully around stumps or logs before sitting.
  • When climbing, always look before putting your hands in a new location. Snakes can climb walls, trees, and rocks and are frequently found at high altitudes.
  • Never grab what appear to be sticks or branches while swimming; rattlesnakes are excellent swimmers.
  • Baby rattlesnakes are venomous! They can and do bite. Leave them alone.
  • Never hike alone. Always have a buddy to help in case of an emergency. Learn basic lifesaving skills.
  • Never handle freshly killed snakes. You may still be bitten.
  • Never tease a snake to see how far it can strike. You can be several feet from the snake and still be within striking distance.
  • Don't keep rattlesnakes as pets. Many rattlesnake bites occur when people tease or play with their “pet” rattlesnake.
  • Teach children to respect snakes and to leave them alone. Curious children who pick up snakes are frequently bitten.
  • Always give snakes the right of way!

Native Reptile Captive Propagation Laws and Regulations

Posted on Friday, September 28, 2018 at 5:52 AM

Credit Worthy Webinars - Citrus/Avocado Pests and Diseases

What Are the Ag Experts Talking About?

Event NameDate
UC Ag Expert talks about citrus thrips 10/17/2018

What is involved in the webinars?

A series of 1 hour webinars will highlight various pest management and horticultural topics for citrus and avocados.  During each session, a UC Expert on the subject will make a presentation and entertain write-in questions via chat during and/or after the presentation. As we develop this program, we may expand to other crops.  These programs are open to all, but are geared to those individuals, such as PCAs and Growers who need CEUs.

Topics: pests and diseases of citrus and avocados

What are the topics and how do I register?

Citrus Thrips - October 17, 2018 at 3 pm

Register in advance for this webinar by clicking on the event link above.

Are there Continuing Education units?

When the subject discusses pest or disease management, continuing education units will be requested from DPR (1 unit per session).  Participants will pre-register, participate in the webinar and be awarded the unit.  The sessions will be recorded and hosted on this web site for future study.  However, continuing education units will be awarded only to the participants who attend the live version of the webinar.  

Who is involved?

This webinar series is brought to you by Ben Faber (UC ANR Ventura Advisor) and Dr. Beth Grafton-Cardwell (Depart of Entomology UC Riverside Extension Specialist) with the technical support of Petr Kosina (UC IPM Contect Development Supervisor) and Cheryl Reynolds (UC IPM Interactive Learning Developer).

 Photo: The mighty citrusthrips - Scirtothrips citri


Attached Files
citrus thrips

citrus thrips
citrus thrips

Posted on Wednesday, September 26, 2018 at 7:38 AM
  • Author: Beth Grafton-Cardwell
Tags: avocado (250), citrus (272), disease (52), pest (8), webinar (1)

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