Citrus Growers Form ACP Management Areas

Commercial Citrus Growers Form Local ACP Management Areas

By Charmayne Hefley, Associate Editor

 

Commercial citrus growers are banding together to prevent the spread of the citrus-deadly Huanglongbing (HLB) disease and the pest that spreads it—the Asian Citrus Pysllid (ACP). Beth Grafton-Cardwell, an IPM specialist and research entomologist at UC Riverside and Director of UC ANR Lindcove Research & Extension Center, said growers are forming ACP management areas to prevent ACP from spreading HLB.

Elizabeth E. Grafton-Cardwell

Elizabeth E. Grafton-Cardwell

“ACP management areas are being formed by the citrus industry and community,” Grafton-Cardwell said. “They’re basically saying, ‘Let’s get together. Let’s form these groups of growers—25 to 35 growers in an area. Let’s work together as neighbors to treat across a large area and get more of the psyllids killed than if we each treated individually at different times.’”

HLB is a serious concern to growers, according to Grafton-Cardwell; the disease has already devastated the citrus industry in Florida. “We want to prevent that from happening here,” shel said.

According to the California Department of Food and Agriculture, ACP notices posted thus far in the first quarter of 2016 include the following areas:

            COUNTY                                                                 CITY

   Fresno County    Fresno
   Kern County    Bakersfield, Shafter, Wasco
   Imperial County    Bard, Brawley area, Calipatria, Niland, Winterhaven, Zone 7
   Los Angeles County    La Puente, San Gabriel
   Riverside County    Hemet, Riverside, San Jacinto
   San Bernardino County    Cadiz
   San Diego County    De Luz, Escondido, Fallbrook, Ramona, San Diego
   San Joaquin County    Stockton
   Santa Barbara County    Areawide, Buellton, Casmalia, Garey, Orcutt, Santa Maria, Sisquoc
   Santa Clara County    Milpitas, San Jose
   Stanislaus County    Oakdale
   Tulare County    Porterville, Strathmore
2021-05-12T11:03:03-07:00March 17th, 2016|

Joel Nelsen on New Cases of HLB in San Gabriel

Joel Nelsen on New Cases of HLB in San Gabriel

By Charmayne Hefley, Associate EditorSave Our Citrus

On Wednesday of last week, two more trees, an orange and a kumquat, were found infected with the citrus-deadly Huanglongbing (HLB) disease in the core of San Gabriel. The trees are located on separate properties. One has been removed, and the other is awaiting the owner’s permission for removal. Last summer, 10 diseased trees were confirmed in the San Gabriel area, and a quarantine, already in place since then, will not need to be expanded.

Joel Nelsen, president of California Citrus Mutual, commented on the HLB discovery, “The two trees were found in the core area, pretty adjacent to the others that were found in San Gabriel,” Nelsen said. The finding “is a result of the program and its intensity in continuing to look for positive HLB finds. Unfortunately, these two trees were positive. The Asian Citrus Psyllids (ACP) in the area have been treated. One tree has already been pulled. The other homeowner wasn’t home so we’re hoping for cooperation there. It’s not positive, but again it shows that the program is trying to find HLB before it finds the commercial citrus industry.”

2021-05-12T11:03:04-07:00February 8th, 2016|

Breaking News: New HLB Infected Tree in San Gabriel

Breaking News

Citrus Insider Reports New HLB Confirmed in San Gabriel

Today, two additional trees in have tested positive for Huanglongbing (HLB). The two trees, an orange and a kumquat, are on separate properties but are both within the core area in San Gabriel where 10 diseased trees were confirmed last summer. Given the close proximity, there will not be a quarantine expansion.

One of the HLB-positive trees has already been removed and California Department of Food and Agriculture (CDFA) officials are in the process of contacting the other homeowner to schedule tree removal. Agriculture officials are working quickly in the area.

Citrus trees in San Gabriel had already been treated for the Asian citrus psyllid (ACP) within the last few weeks as part of CDFA’s routine HLB response. ACP populations are closely monitored in areas where HLB has been detected and treatments occur if there is a noted increase in population size. Since trees have been recently protected, no additional treatments will take place at this time. Instead, CDFA will focus on sampling extensively in the area. Much of the area has already been sampled and CDFA’s lab has identified all samples from San Gabriel as high priority.

The Citrus Pest & Disease Prevention Program is working with the Los Angeles County Agricultural Commissioner’s office and CDFA to develop a multilingual informational flyer to notify residents of the significance of these finds and potential implications to other citrus trees in the area. CDFA staff will distribute this information as they go door-to-door sampling and surveying.

More information will be shared as it is available. In the meantime, the citrus industry is encouraged to keep a critical eye on all plant material moving into or out of your groves and recommends taking the following steps so collectively, as a team, we can all save our citrus trees.

-Remove all leaves and stems

-Shake out picking bags

-Inspect harvesting equipment

-Educate fieldworkers

-Get on board with area-wide treatments

__________________

Additional Links:

Citrus Insider

Save Our Citrus

California Citrus Mutual

2021-05-12T11:03:04-07:00February 3rd, 2016|

FROM THE EDITOR

From the Editor

California Ag Today would like to issue a formal apology regarding errors in our article, “Korea Refuses Contaminated Citrus,” published yesterday on our website, CaliforniaAgToday.com.

While we strive to accurately report timely, trusted and essential news about California’s comprehensive and complex agricultural industry according to the highest standards in professional journalism, we always appreciate the opportunity to correct any errors we have made.

To be clear, Korea is not refusing citrus imports from California. Korea is concerned about the detected presence of Fuller rose beetles in arriving citrus shipments.

I, personally and sincerely apologize to:

  1. Dr. Elizabeth Grafton-Cardwell for any and all misrepresentations of her message.
  2. The California agricultural industry for any hindrance or concern our article may have caused.
  3. Our readers, the California Ag Today team, and Charmayne Hefley, author of the article, for my editorial errors.

In addition, I thank California Citrus Mutual for informing us about our errors with haste. 

We promptly removed the story from our website, CaliforniaAgToday.com, as soon as we were notified. We will continue to strive to better adhere to our mission of accurately reporting news about California’s agriculture industry.

Here is a more recent article on the issue:

“Californian Citrus Rejected by Korea,” published on www.freshplaza.com today and tweeted by Elizabeth Grafton-Cardwell today as well.

Laurie Greene

Editor

1/14/16

2016-05-31T19:26:59-07:00January 15th, 2016|

Protecting California Citrus from ACP

Protecting California Citrus from ACP

By Charmayne Hefley, Associate Editor

[embedvideo id=”ZWgOOjpxwE8″ website=”youtube”]

 

California’s $2.2 billion fresh citrus industry that supplies 85 percent of the nation’s fresh citrus is currently healthy and vibrant despite the background threat of the Asian Citrus Psyllid (ACP), according to Kevin Severns, a citrus grower in Sanger, CA; general manager of the Orange Cove-Sanger Citrus Association, a cooperative citrus packing house in eastern Fresno County; and  chairman of California Citrus Mutual.

“We’re quite concerned about it,” Severns said about the ACP—a tiny bug that is a known carrier or vector of “huanglongbing” (HLB), a devastating, incurable disease of citrus trees  that has already demolished the citrus industry in Florida. “We’ve been able to keep the bug at bay to this point,” Severins continued, “at least here in the Central Valley, but we’re very concerned about it. There are a lot of issues to be concerned about with this bug.”

Save Our CitrusCalifornia has taken note of the devastation of Florida’s industry, Severns said, and is taking steps to ensure the safety of California’s citrus. “Having gone to Florida with many of our citrus growers,” Severns explained, “I heard Florida growers tell we must control the bug. So we’re trying to keep this bug at bay and not allow [the infestation] to expand. We’ve had varied success in different areas of California, but so far, we’ve been able to keep the bug’s expansion here in the Central Valley to a minimum. We continue to have finds from time to time, but we haven’t yet had an explosion of the population of the ACP.”

Severns said, “We have a very successful partnership with the California Department of Food and Agriculture (CDFA).” While trapping ACP is critical, he emphasized the importance of enlisting the help of residential folks with citrus in their backyards to get involved in the conversation, to look for this pest, and to join in the fight. “The trap is very limited in its ability to pick up ACP, so it’s very important that we have visual surveys in which growers and homeowners actually go out and look at their trees for the bug.”

Severns said current measures against the spread of the ACP is helping to buy time for researchers to find a cure for HLB. “We realize every place on earth where the ACP has gone, eventually has been followed by HLB,” Severns said, “so we’re trying very hard to buy time and give our researchers and scientists a chance to come up with a solution to this disease—whether it is a resistant type of citrus variety or a cure for the trees.”

Preventing the spread of ACP and HLB, from commercial citrus growers to residential citrus growers, will require that everyone works together. To learn more, go to CaliforniaCitrusThreat.org or contact your local Ag Commissioner.

_________________

Did you know, the historical time period establishing the California citrus industry is known as the “other” California Gold Rush? (Source: California Citrus Mutual)

_________________

2021-05-12T11:05:58-07:00January 12th, 2016|

UPDATE! Expanded ACP Quarantine

UPDATE! Expanded ACP Quarantine in Stanislaus and Merced Counties

Two ACPs Found in City of Turlock

Stanislaus County has been placed under quarantine for the Asian citrus psyllid (ACP) following the detection of two ACPs within the City of Turlock.  The expanded ACP quarantine also includes a portion of northern Merced County along its border with Stanislaus County.  The quarantine zone measures 101 square miles, bordered on the north by East Service Road; on the south by August Avenue; on the west by Blaker Road; and on the east by North Hickman Road.  The quarantine map for Stanislaus and Merced is available online at: www.cdfa.ca.gov/go/acp-maps.

The quarantine prohibits the movement of citrus and curry leaf tree nursery stock, including all plant parts except fruit, out of the quarantine area and requires that all citrus fruit be cleaned of leaves and stems prior to moving out of the quarantine area.  An exception may be made for nursery stock and budwood grown in USDA-approved structures which are designed to keep ACP and other insects out.  Residents with backyard citrus trees in the quarantine area are asked not to transport or send citrus fruit or leaves, potted citrus trees, or curry leaves from the quarantine area.

ACP county-wide quarantines are now in place in Imperial, Los Angeles, Orange, Riverside, San Bernardino, San Diego, Santa Barbara, Tulare and Ventura Counties, with portions of Alameda, Fresno, Kern, Madera, Merced, San Benito, San Francisco, San Joaquin, San Luis Obispo, San Mateo, Santa Clara, and Stanislaus counties also under quarantine.

The ACP is an invasive species of grave concern because it can carry the disease huanglongbing (HLB), also known as citrus greening.  All citrus and closely related species, such as curry leaf trees, are susceptible hosts for both the insect and disease.  There is no cure once the tree becomes infected; the diseased tree will decline in health and produce bitter, misshaped fruit until it dies.  In California, HLB has only been detected in 2012 and 2015 on residential properties in Los Angeles County.  This plant disease does not affect human health.

Residents in the area who think they may have seen ACP or symptoms of HLB on their trees are urged to call CDFA’s Pest Hotline at 1-800-491-1899 or your local agricultural commissioner’s office (Stanislaus County (209) 525-4730; Merced County (209) 385-7431).  For more information on the ACP and HLB, please visit: www.cdfa.ca.gov/go/acp.

2021-05-12T11:06:00-07:00December 28th, 2015|

#CitrusMatters Spreads Info

#CitrusMatters Helps Spread Word on Serious Citrus Greening Disease

By Kyle Buchoff, Assistant Editor

Steve Olson, senior product manager for Bayer CropScience has a big passion for citrus, an important U.S. crop currently at risk to Huanglongbing (HLB), also known as citrus greening, a bacterial citrus plant disease. The vector of the deadly disease is a tiny insect known as the Asian citrus psyllid. Bayer CropScience launched the #CitrusMatters initiative this year to fully convey the significance of HLB to the California public.#CitrusMatters

Olson said the initiative focused on California’s urban settings because more than 60 percent of homeowners in California grow citrus trees in their yards. “We felt we could have some influence on broadening public awareness of this very significant disease.”

“So we introduced the #CitrusMatters initiative with California Citrus Mutual to help spread through social media the importance of citrus and how people enjoy citrus,” said Olson. “We were trying to make that emotional connection, and I think to a degree we have had some success. We held a #CitrusMatters Day in San Diego on May 8 and in Los Angeles on July 2, and tried to engage mass media. I think it is a very important undertaking to really bring awareness to homeowners who have citrus in their backyards.”

For more information go to: citrusmatters.bayercropscience.us.

2016-05-31T19:27:07-07:00October 13th, 2015|

JPA Could Save Temperance Flat Dam

Joint Power of Authority Could Save Temperance Flat Dam

By Patrick Cavanaugh, Deputy Editor

A Joint Power of Authority (JPA) is being formed to help preserve money authorized for construction of the Temperance Flat Dam with the passage of California Proposition 1, the Water Bond in 2014. Joel Nelsen, president of California Citrus Mutual, has been engaged in getting the project off the ground.

“It is unfortunate what has happened to the Friant Water Authority leadership and the lack of suitable talent there to run with it. The situation has adversely impacted getting a Temperance Flat water storage program in front of the California Water Commission, whose nine governor-appointed members are responsible for advising the director of California Department of Water Resources, approving rules and regulations, and monitoring and reporting on the construction and operation of the State Water Project. The Water Commission, which elicits preferred priorities from the agricultural industry, will award bond money in early 2017.

The Water Bond approved by voters last fall designates $2.7 billion for water storage. While this amount will help subsidize the construction of the dam, Nelsen noted there needs to be better organization in its planning, “because when we negotiated money for storage planning, we were set on two locations, Temperance Flat, behind Friant dam and east of Fresno, and Sites Reservoir, north of Sacramento. Of course, all along, we have known that farmers were investing a lot of money into it as well, but you have to have a plan,” Nelsen said.

Nelsen explained the JPA consists of city and county leaders as well as farm industry leaders from Merced to Bakersfield, including those from Fresno, Madera, Kings, Kern and Tulare Counties, and will require everyone’s cooperation to get the job done. “The inability to sustain some leadership at the Friant system right now has stalled our ability to make something happen in that regard.

“If we can use the talent within our counties right now to generate some of the proposals until we have the ability to get additional water experts online, I would give those who are working on the JPA all the credit in the world,” Nelsen said.

2016-05-31T19:27:08-07:00October 6th, 2015|

Fighting ACP in California

Fighting ACP In California to Stay Well Ahead of HLB

By Patrick Cavanaugh, Deputy Editor

With more than 275,000 acres of citrus trees in California, keeping the Asian Citrus Psyllid (ACP) out of groves is a serious concern. Bob Blakely, vice president of California Citrus Mutual, based in Exeter, talked to California Ag Today about how growers are fighting ACP in California.

“We’ve been very proactive, ever since the first psyllid was found here back in 2008. We already had an action plan in place when that psyllid was found. We have engaged with and educated the public and the media, and we have very good cooperation with the state’s citizens,” Blakely said.

Tamarixia radiata (female)

Tamarixia radiata (female); Mark Lewis, UC Riverside Center for Invasive Species Research

Blakely noted the industry is using a variety of methods, “We are usually able to go in and treat urban areas in Southern California, where ACP is now endemic, with crop protection materials. If we determine we cannot control it with pesticides, we implement a new biological program by releasing the parasitoid Tamarixia (a tiny non-native wasp) in residential areas. The new wasp is becoming well-established, and we are hoping the species will help manage ACP populations.”

“We hope to prevent ACP from creating the type of damage seen in Florida, where the citrus industry has been reduced by 50%,” said Blakely. “We are way ahead of the game here in California. We have managed to slow ACP spread in commercial areas in order stay ahead of the spread of the HLB disease the bug carries. We hope a reasonable cure can be found so we can prevent the kind of devastation we are witnessing in some other states.”

2016-05-31T19:27:10-07:00September 18th, 2015|

ACP Devastates Florida Citrus

ACP Devastates Florida Citrus Industry; California Continues Vigilance

By Patrick Cavanaugh, Deputy Editor

 

California Citrus growers must not underestimate the potential damage from Asian Citrus Psyllid (ACP), according to Bob Blakely, vice president, California Citrus Mutual, based in Exeter.

Given multiple ACP detections in California this year, Blakely used Florida’s ACP catastrophe as an example of how devastating the pests can be. “We are challenged here in California with ACP,” Blakely began, “which vectors the fatal disease known Honglongbing, (HLB), also known as citrus greening. But, it is nothing like what they are dealing with in Florida, since HLB [the disease itself] was discovered there less than ten years ago. “Florida’s citrus acreage, which measured just under 1 million acres prior to the calamities they’ve been facing,” said Blakely, “has been reduced by almost 50%.”

Bob Blakely, VP, California Citrus Mutual

Bob Blakely, VP, California Citrus Mutual

While occurrences of Citrus Canker Disease as well as urbanization also contributed to the reduction in acreage, Blakely stated, “the big killer, citrus greening, is mostly responsible for the reduction of citrus acreage to the lowest level in decades.”

Because Florida has become so infested with ACP and HLB, reestablishing the industry there will take some time. “They are replanting and trying to replant healthy trees,” Blakely explained, “but they know those trees are short-lived compared to trees in California. We have hundred year-old groves. Florida farmers are just hoping to raise those trees and get a few years of production out of them before HLB re-infects them and they must be replaced again,” said Blakely.

2016-05-31T19:27:10-07:00September 16th, 2015|

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