Pests and Diseases

New Medfly Quarantine

A portion of San Diego County was placed under Medfly quarantine earlier this week following the detection of 4 adult Mediterranean fruit flies (Medflies) in the La Mesa area. The United States Department of Agriculture (USDA), the San Diego County Agricultural Commissioner, and CDFA are working collaboratively on this project.

The quarantine area in San Diego County measures 93 square miles, bordered on the north by Prospect Avenue; on the south by Mount Miguel Road; on the west by Fairmount Avenue; and on the east by Vista Grande Road. A link to the quarantine map may be found here: www.cdfa.ca.gov/plant/medfly/regulation.html.

To eradicate the infestation, the release of sterile male Medflies began on August 10, at a rate of 250,000 flies per square mile per week. The new release area is approximately 59 square miles. In addition, properties within 200 meters of detections are being treated with an organic formulation of Spinosad, which originates from naturally-occurring bacteria in soil, in order to eliminate any mated females and reduce the density of the population. Finally, fruit removal will occur within 100 meters of detection properties in order to remove any fruit infested with eggs and larvae.

The quarantine will affect any growers, wholesalers, and retailers of susceptible fruit in the area as well as local residents. Home gardeners are urged to consume homegrown produce on site and not move it from their property. These actions protect against the artificial spread of the infestation to nearby regions where it could affect California’s food supply and our backyard gardens and landscapes.

In the eradication program, sterile male Medflies are brought to San Diego County from the joint CDFA/USDA sterile insect rearing facility in Los Alamitos, which prepares sterile files for release everyday over the Los Angeles basin. The sterile release program has a proven track record of eradication in southern California. Sterile male flies mate with fertile female flies in the environment but produce no offspring. The Medfly population decreases as the wild flies reach the end of their natural life span with no offspring to replace them, ultimately resulting in the eradication of the pest.

The Medfly can infest more than 250 types of fruits and vegetables, causing severe impacts on California agricultural exports and backyard gardens alike. Residents who believe their fruits and vegetables are infested with fruit fly larvae are encouraged to call the state’s toll-free Pest Hotline at 1-800-491-1899.

California Ag Today2016-05-31T19:28:06-07:00August 21st, 2015|

Subsurface Drip in Alfalfa

Subsurface Drip in Alfalfa–A Growing Interest

By Laurie Greene, Editor

Dan Putnam is a faculty member and Cooperative Extension specialist at UC Davis with a statewide responsibility for alfalfa and forage crops. He said there has been an increased interest in subsurface drip irrigation in alfalfa, which is usually flood-irrigated. Alfalfa is a key forage source for the state’s top agricultural product, dairy, to the tune of more than $7 billion per year.

“It does come with some challenges,” but he said, “the growers who have really treated this as an educational experience are continually learning how to manage this system; not only the gophers, but the irrigation management component as well. To establish a crop with drip irrigation, growers need to plant in early fall and use sprinklers to germinate the seeds. A lot of growers fail on agronomic issues, like not planting at the right time of year rather than on drip irrigation issues,” Putnam said.

Putnam noted that growers are more interested in learning about subsurface drip irrigation because of increased yields. “I think over time, we are going to see a greater adaptation of this technology in California,” Putnam explained, “particularly in areas that have very high yield potential. For example, in the San Joaquin Valley and the Imperial low desert areas where the crop is actually capable of 12-16 ton yields, our yields average about 7-8 tons per acre. And so,” he added, “we do have a yield potential that we are unable to achieve, and part of that is in the limitation of surface irrigation.”

Putnam also noted one advantage of drip irrigation is efficient nutrient delivery, which in turn fosters increased uniformity across the system. “Growers can ‘spoon-feed’ the crop rather than inefficiently apply it on the surface,” stated Putnam. “I think a lot of growers have figured this out, although alfalfa does not have a nitrogen issue. Nevertheless, we have to apply significant phosphorous, potassium and several other nutrients in some deficient soils.”

As with most things, there are drawbacks, and Putnam outlined two. “One is an increased cost of the drip line and filtration system,” Putnam said. “Growers who are considering subsurface drip need to wrestle with the cost to be sure they can increase yields enough to justify the cost. In most cases, growers have been able to substantially increase yields in their systems to pay for the $1500-2500 per acre upfront investment in the technology,” he said.

“The other drawback is maintenance,” Putnam continued, “particularly with regard to rodent infestations. We’ve seen gophers, in particular, ground squirrels and meadow voles absolutely devastate drip-irrigation fields. As our vertebrate pest specialist at UC Davis says, ‘It is essentially an ideal habitat for gophers as they have plenty of food, plenty of shelter, plenty of water, and they are able to reproduce pretty readily.’ ”

“You should consider this system only if you are willing to accept a very high level of maintenance and no tolerance for rodent infestation because, if left unchecked, they will chew on the tapes and ruin the system,” he said.

Putnam reported there are strategies to get around gophers and other rodent issues, “You have start clean and do some deep tillage. We also recommend retaining the capability of flood irrigation in those fields to use once in a while because it reaches the furrows very effectively,” he noted.

For those gophers, Putnam recommends every trick in the book. “There are traps organic farmers are able to use, flood irrigation, and boxes to help control the population,” Putnam said. “There are products available for baiting and other types of control measures that should be used. It is really too expensive a system to allow the gophers to have their way with it, so we need to have a high level of management,” he concluded.

California Ag Today2016-07-30T21:43:15-07:00August 3rd, 2015|

URGENT HLB Quarantine UPDATE

HLB Quarantine Update

A Huanglongbing (HLB) quarantine is now in effect in part of Los Angeles County following the detection of HLB in four citrus trees.

On July 10, a kumquat tree on a residential property was confirmed to be infected with the incurable HLB disease. After extensive surveying and testing in the area, three more diseased trees were found nearby. The four diseased trees were on four separate properties close to one another. The tree varieties include kumquat, lime, mandarin and calamondin.

California Department of Food and Agriculture (CDFA) has already removed two of the diseased trees and is currently working with the homeowners at the other two properties to remove those trees as soon as possible. See the CDFA press release below for more details on the resulting quarantine.

QUARANTINE FOR HUANGLONGBING DECLARED IN SAN GABRIEL, LOS ANGELES COUNTY

SACRAMENTO, July 22, 2015 – An 87-square mile quarantine in the San Gabriel area of Los Angeles County has been added to the existing huanglongbing (HLB) quarantine in the Hacienda Heights-area following the detection of the citrus disease huanglongbing, or citrus greening.

Additional information, including a map of the quarantine zone, is available at the CDFA Save Our Citrus website. The quarantine boundaries are: on the north, E. Orange Grove Boulevard; on the east, N. Lemon Avenue; on the west, Griffin Avenue; and on the south W. La Habra Boulevard.

This area is part of a much larger quarantine already in place for the Asian citrus psyllid (ACP), the pest that spreads bacteria causing huanglongbing (HLB). The new quarantine will prohibit the movement of all nursery stock out of the area, while maintaining existing provisions allowing the movement of only commercially cleaned and packed citrus fruit. Any fruit that is not commercially cleaned and packed, including residential citrus, must not be removed from the property on which it is grown, although it may be processed and/or consumed on the premises.

“The success of any quarantine depends on cooperation from those affected,” said CDFA Secretary Karen Ross. “The stakes couldn’t be higher for California citrus. We urge residents in the San Gabriel-area to do all they can to comply.”

CDFA, the USDA and the Los Angeles County Agricultural Commissioner’s continue their work to investigate the source of the disease, to survey and test for it throughout the Los Angeles Basin, and to continue with ground treatment of citrus trees within 800 meters of the find sites – which began earlier this week. In the long term, the strategy is to control the spread of ACPs while researchers work to find a cure for the disease.

Huanglongbing has been confirmed four times in San Gabriel, in a kumquat tree on a residential property, in a lime tree on an adjacent residential property, and in calamondin and mandarin trees on residential properties in close proximity to the original find. The disease is bacterial and attacks the vascular system of plants. It does not pose a threat to humans or animals. The Asian citrus psyllid can spread the bacteria as the pest feeds on citrus trees and other related plants. Once a tree is infected, there is no cure; it typically declines and dies within a few years.

Huanglongbing is known to be present in Mexico and in parts of the southern U.S. Florida first detected the disease in 2005, and the University of Florida estimates that the disease causes an average loss of 7,513 jobs per year, and has cost growers $2.994 billion in lost revenue since then. Huanglongbing has also been detected in Georgia, Louisiana, South Carolina and Texas as well as Puerto Rico and the U.S. Virgin Islands.

A total of 15 states or territories are under full or partial quarantine due to the presence of the ACP: Alabama, American Samoa, Arizona, California, Florida, Georgia, Guam, Hawaii, Louisiana, Mississippi, Northern Mariana Islands, Puerto Rico, South Carolina, Texas, and the U.S. Virgin Islands.

The Asian citrus psyllid was first detected in California in 2008 and quarantines for the pest are now in place in 17 California counties. If Californians believe they have seen evidence of huanglongbing in local citrus trees, they are asked to please call CDFA’s toll-free pest hotline at 1-800-491-1899 FREE. For more information on the Asian citrus psyllid and huanglongbing, please visit: http://www.cdfa.ca.gov/phpps/acp/.

California Ag Today2016-05-31T19:28:09-07:00July 23rd, 2015|

Location! Location! Location!

UC ANR Research and Extension Centers Strategically Located

By Charmayne Hefly, Assistant Editor, California Ag Today

Bill Frost is the director of the University of California, Division of Agriculture and Natural Resources’ Research and Extension Center System that has nine different research and extension centers located throughout the state.

UC ANR Research and Extension Center System

Describing the strategy in their geographic placement, Frost said, “We have located them in different growing zones, climates and environments. We have chosen everything from the desert region in El Centro, to cropland here in Kearney, to livestock grazing in both our Hopland and Sierra Foothill Research and Extension Centers, all the way up to Intermountain in Tulelake, where we research potatoes, garlic and crops that can be grown in that fairly short growing season.”

The goal, according to Frost, is to solve local issues from a local or regional perspective. “Each one of our centers has different environments, crops and pest issues to address,” he explained. “These diverse locations are critically important to us because we can do localized, applied research and get useful information out to people, whether they are homeowners in their gardens or growers managing a thousand acres of a crop.”

Frost noted the UCANR Research and Extension Center System has been actively seeking new personnel to better meet the needs of growers. “Just in the last four years,” he said, “we’ve hired almost one hundred new cooperative extension advisors and specialists around the state—many of whom are housed here at the Kearney Research and Extension Center. They are also housed on UC campuses and in our county Cooperative Extension offices.”

Frost commented, “We continue to be relevant. We continue to do cutting-edge applied research. Our programs provide information to everyone; from our youth development program in 4-H and our nutrition education, to master gardener programs that help homeowners with pest problems and water management.”

“And of course, we serve the agricultural community. We have a lot of good research going on and we’re generating lot of good information in commodity production, pest management and water management,” Frost said.

The nine UC ANR Research and Extension Stations are:

Desert Research & Extension Center in El Centro
Hansen Research & Extension Center in Santa Paula
Hopland Research & Extension Center in Hopland
Intermountain Research & Extension Center in Tulelake
Kearney Agricultural Research & Extension Center in Parlier
Lindcove Research & Extension Center in Exeter
Sierra Foothill Research & Extension Center in Browns Valley
South Coast Research & Extension Center in Irvine
West Side Research & Extension Center in Five Points

Featured Photo: UC ANR

Patrick Cavanaugh2016-05-31T19:28:10-07:00July 20th, 2015|

HLB Found in LA

Huanglongbing Detected on LA County Pre-Symptomatic Kumquat Tree

By Patrick Cavanaugh, Farm Director; Laurie Greene, Editor, California Ag Today

#CitrusMatters (provided by Bayer CropScience, in partnership with California Citrus Mutual)

“It’s disappointing, but fortunately it was found in a residential area,” commented Joel Nelsen, president of California Citrus Mutual (CCM), on the second discovery of Huanglongbing [wong-long-bing] (HLB), or citrus greening, in California. CCM refers to HLB as “a death sentence for California citrus” as once the plant is infected with this bacterial disease, there is no known cure.

Joel Nelsen, president, California Citrus Mutual

“HLB was detected in plant material taken from a kumquat tree in a residential neighborhood in the San Gabriel area of Los Angeles County,” Nelson stated. “The 20-year-old tree was in the front yard of a residence and had not yet shown any symptoms.”

The San Gabriel neighborhood is located about 15 miles from Hacienda Heights, where the first HLB case in the state was detected in 2012 in a residential citrus tree. The An aggressive trapping program for the Asian citrus psyllid (ACP), a pest known to spread the HLB bacteria as it feeds on citrus trees and other plants, has been ongoing ever since this first finding, including in the San Gabriel area.

“It’s fortunate that the homeowner is quite cooperative,” said Nelsen, “and other neighborhood homeowners are allowing officials to run PCR tests (polymerase chain reaction) on samples of their trees to determine if the disease is present.” PCR analysis is a sensitive research technique for detecting and identifying small numbers of bacteria in plants via DNA amplification.

Nelsen declared, “This find is exactly what the Citrus Pest and Disease Prevention Program is designed to do. PCR testing of a random sampling of leaves and stems in the area, as our program prescribes, enabled us to hit a positive” before symptoms appeared.

“We do not know how long the tree had been diseased,” said Nelsen, “but we do know that we have been trapping ACPs there for a long time and had not found any HLB before. You do not want to

find anything,” Nelsen said, “but when you do, you want to find it before it becomes an epidemic.”

In a statement on Friday, California Department of Food and Agriculture (CDFA) Secretary Karen Ross said, “Citrus is a cherished part of our landscape and our shared history, as well as a major agricultural crop.” CDFA has been planning and preparing for HLB detections since before the first ACP was detected in the state in 2008. Quarantines are now in place in 17 California counties.

Los Angeles County Agricultural Commissioner Kurt Floren will mobilize his team over this week to check on citrus trees in plant nurseries that fall within the 800-meter radius around the infected tree area. A spray protocol is already in place for all citrus trees within the 800-meter radius.

“More traps are going out so we can try to delineate the scope of the problem. Hopefully it will be nothing more than this one tree, like the solitary diseased tree we found in Hacienda Heights,” Nelsen said.

Resources

To support the citrus industry in its fight against HLB, go to California Citrus Mutual Action Center.

For questions about the ACP or HLB, visit or call CDFA’s toll-free pest hotline at 1-800-491-1899.

View the Distribution Map of ACP, HLB and parasites in California published by the UNIVERSITY OF CALIFORNIA Division of Agriculture and Natural Resources.

USDA’s free “Save Our Citrus” iTunes app

Visit the Citrus Pest & Disease Prevention Program.

Verify plant symptoms at USDA’s SaveOurCitrus website.

For information and ACP solutions, go to #citrusmatters, provided by Bayer CropScience, in partnership with California Citrus Mutual

California Ag Today2016-05-31T19:28:11-07:00July 13th, 2015|

UC ANR Horticulture Advisor Retires After 28 Years

John Kabashima wrapped up his horticultural career on July 1, after 28 years with University of California Agriculture and Natural Resources. Nursery professionals lauded the UC Cooperative Extension advisor’s service to the nursery and landscape industry and to homeowners in Orange and Los Angeles counties.

“He’s one of the few people who could translate science into business with a sense of candor and fact-based conversation,” said Robert Crudup, president of Calabasas-based Valley Crest Tree Company, of Kabashima.” John has long-term vision, which he used throughout his career to move the nursery industry forward.”

John Kabashima, UC ANR

“He is smart about political science as well as plant science,” Crudup said. On a regular basis, Kabashima would warn growers about emerging issues that were likely to affect the nursery industry, such as regulations to control the spread of polyphagous shot hole borer, red imported fire ant and palm borer.

“He’s been very, very valuable,” said retired nurseryman Gary Hayakawa, noting that Kabashima not only contributed research on pest control and water issues for the nursery and landscape industries, but also persuaded people from UC campuses, the California Department Food and Agriculture and industry to work together. “Before he was involved in issues, the work was all separate. Industry didn’t have input,” Hayakawa said. “What John has done is to work with all three to form a coalition.”

Crudup, whose company has nursery operations in Los Angeles, Ventura, Alameda and San Joaquin counties, agreed.

“John’s biggest contribution was his work with the glassy-winged sharpshooter subcommittee,” said Crudup, who served on the subcommittee. “He brought a voice of reason that helped counterbalance emotional sides of the discussion.”

“His ability to act as the primary liaison between the nursery industry, CDFA, the UC, the county agricultural departments and the wine and grape industries was the primary reason this part of the GWSS (glassy-winged sharpshooter) program was so successful and, more importantly has resulted in the continued viability of the California nursery industry in light of significant regulatory pressures,” said Bob Wynn, who was statewide coordinator of the CDFA Pierce’s Disease Control Program and who continues to oversee the program as senior advisor to Secretary Karen Ross.

“The CDFA, with advisement and counseling from John, developed what is known as the Approved Nursery Treatment Program, which allows nurseries in the infested areas of the state to ship by merely treating the plants with an approved treatment,” Wynn said. “John was the primary author in the development of the nursery ‘Approved Treatment Best Management Practices’ document published in 2008. The use of this document has allowed the nursery industry to save millions of dollars in regulatory compliance costs over time.”

A native of Los Angeles, Kabashima says he started working in his family’s nursery business as soon as he was tall enough to water 1-gallon nursery plants. “After killing thousands of plants, I was finally allowed to manage the family business from 1970 to 1976,” he quipped.

In 1976, his family sold the nursery and Kabashima enrolled at California Polytechnic University, Pomona. After he earned a B.S. in agricultural biology from Cal Poly Pomona in 1979, he was hired by UC Riverside horticulture entomologist Pat Morishita as a lab technician. While working at UC Riverside, Kabashima earned a master’s degree in pest management. He would later complete a Ph.D. in entomology at UC Riverside.

Kabashima earned his MBA at Pepperdine University in 1986 while managing the Ornamental Horticulture Division at Target Specialty Products. In 1987, the UC Division of Agriculture and Natural Resources recruited him to become a UC Cooperative Extension environmental horticulture advisor in Orange and Los Angeles counties.

Over the years, he has studied the management of insects, diseases and weeds in horticulture production systems, biological control of exotic pests, and water-related problems in landscapes, golf courses, nurseries, municipalities and watersheds.

In 1998 Kabashima took over the fledgling UC Master Gardener Program in Orange County, which as of now has trained more than 300 UC Master Gardener volunteers to extend research-based information on gardening and horticulture to the public.

The UCCE environmental horticulture advisor has also served as director of UC Cooperative Extension in Orange County and interim director of the UC ANR South Coast Research and Extension Center.

In 1994, when Orange County filed for bankruptcy and the Board of Supervisors voted to discontinue funding and housing for the local UC Cooperative Extension, Kabashima worked with Gary Hayakawa to keep UCCE in the county.

“When Orange County cut Cooperative Extension’s budget, we found out that without extension you don’t have 4-H or Master Gardeners,” Hayakawa said. To preserve the UC Cooperative Extension programs, Hayakawa, who was an Orange County Fair Board member, helped Kabashima secure office space in trailers on the fairgrounds. In 2014, the UCCE office moved from the fairgrounds to UC ANR South Coast Research and Extension Center in Irvine.

Kabashima belongs to many professional organizations including the Entomological Society of America, California Association of Nurseries and Garden Centers, Nursery Growers Association, Western Chapter of the International Society of Arboriculture, United Agribusiness League, and San Diego Flower and Plant Association. The scientist has served on numerous government and industry advisory committees.

Throughout his career, Kabashima’s achievements in education and research have been recognized by various organizations. To name a few, he received the 1987 Education and Research Award from the Orange County Chapter of the California Association of Nurseries and Garden Centers (CANGC), 1993 CANERS Research Award from CANGC, 2002 Nursery Extension Agent Award from the American Nursery and Landscape Association, 2008 Western Extension Directors Award of Excellence, 2010 Entomological Society of America’s National IPM Team Award and the 2011 California Agriculture Pest Control Advisors Association Outstanding Contribution to Agriculture Award. In 2014, he and his friend Hayakawa were inducted into the Green Industry Hall of Fame.

Being a UCCE advisor has suited Kabashima. “I love learning new things, sharing that information with others, and using my skills to solve problems facing California, such as the ever-increasing arrivals of exotic and invasive pests,” he said. The avid photographer has been able to unite his avocation with his vocation. His photographs of insects have been used to illustrate textbooks, websites and news articles.

“Success in one’s field is often a combination of natural ability, informal and formal training and education, being mentored, and networking with collaborators and colleagues, all sprinkled with a little bit of luck and support from one’s family and friends,” Kabashima said.

In retirement, Kabashima plans to seek new culinary experiences with his wife Janet and daughter Misa, at home and in their travels together. He has been granted emeritus status by UC ANR and he will continue his efforts to help UC Irvine save trees on its campus that are infested with polyphagous shot hole borer.

UC Agriculture and Natural Resources researchers and educators draw on local expertise to conduct agricultural, environmental, economic, youth development and nutrition research that helps California thrive. Learn more at ucanr.edu.

California Ag Today2016-05-31T19:28:11-07:00July 12th, 2015|

BREAKING NEWS ON HUANGLONGBING CITRUS DISEASE

HUANGLONGBING CITRUS DISEASE DETECTED IN SAN GABRIEL AREA OF LOS ANGELES COUNTY
CDFA
Release #15-031

Sacramento, July 10, 2015 – The California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) have confirmed detection of huanglongbing (HLB) citrus disease, or citrus greening. The disease was detected in plant material taken from a kumquat tree in a residential neighborhood in the San Gabriel area of Los Angeles County.

This is the second time HLB has been detected in California. The first detection occurred in 2012 in a residential citrus tree in Hacienda Heights, about 15 miles from San Gabriel.

HLB is a bacterial disease that attacks the vascular system of plants. It does not pose a threat to humans or animals. The Asian citrus psyllid (ACP) can spread the bacteria as the pest feeds on citrus trees and other plants. Once a tree is infected, there is no cure; it typically declines and dies within a few years.

“Citrus is a cherished part of our landscape and our shared history, as well as a major agricultural crop,” said CDFA Secretary Karen Ross. “CDFA is moving quickly to protect the state’s citrus. We have been planning and preparing for HLB detections with our growers and our colleagues at the federal and local levels since before the ACP was first detected here in 2008.”

A CDFA crew has removed and disposed of the infected tree and is preparing to conduct treatment of citrus trees for ACP infestation within 800 meters of the find site. By taking these steps, a critical reservoir of disease and its vectors will be removed, which is essential.

An intensive survey of local citrus trees and psyllids is underway to determine if HLB exists anywhere else in the area. Planning has begun for a quarantine of the area to limit the spread of the disease by restricting the movement of citrus trees, citrus plant parts, green waste, and all citrus fruit except what is commercially cleaned and packed. As part of the

SAVE OUR CITRUS app is a free USDA iPhone to report and identify the four leading citrus diseases: citrus greening, citrus canker, citrus black spot and sweet orange scab. Report your symptoms, upload a photo and citrus experts will respond.

quarantine, citrus and closely related plants at nurseries in the area will be placed on hold.

Residents of quarantine areas are urged not to remove or share citrus fruit, trees, clippings/grafts or related plant material. Citrus fruit may be harvested and consumed on-site.

CDFA, in partnership with the USDA, local agricultural commissioners and the citrus industry, continues to pursue a strategy of controlling the spread of ACPs while researchers work to find a cure for the disease.

HLB is known to be present in Mexico and in parts of the southern U.S. Florida first detected the pest in 1998, and the disease in 2005, and the two have now been detected in all 30 citrus-producing counties in that state. The University of Florida estimates that the disease causes an average loss of 7,513 jobs per year, and has cost growers $2.994 billion in lost revenue since HLB was first detected in that state in 2006.

HLB has also been detected in Georgia, Louisiana, South Carolina and Texas, as well as Puerto Rico and the U.S. Virgin Islands. A total of 15 states or territories are under full or partial quarantine due to the detected presence of the Asian citrus psyllid: Alabama, American Samoa, Arizona, California, Florida, Georgia, Guam, Hawaii, Louisiana, Mississippi, Northern Mariana Islands, Puerto Rico, South Carolina, Texas, and the U.S. Virgin Islands.

The ACP was first detected in California in 2008, and quarantines are now in place in 17 California counties. If Californians have questions about the ACP or HLB, they may call CDFA’s toll-free pest hotline at 1-800-491-1899 or visit: http://www.cdfa.ca.gov/phpps/acp/.

Patrick Cavanaugh2016-05-31T19:28:11-07:00July 10th, 2015|

LA Declares Citrus Matters TODAY

LA Citizens And Commercial Citrus Growers Highlight Deadly Citrus Disease And Why Citrus Matters

LOS ANGELES (July 2, 2015) – California’s citrus industry is threatened by the Asian citrus psyllid (ACP), a tiny pest that can transmit the world’s deadliest citrus disease, Huanglongbing (HLB). Currently, all of Los Angeles County is under quarantine[1] for the psyllid, which continues to spread across the state. Along with Bayer CropScience and California Citrus Mutual, City Councilmember Gil Cedillo announced TODAY, July 2 that, “Citrus Matters” to Los Angeles. During the event, commercial citrus growers from the region were recognized for their contributions to the state of California and acknowledged the devastating disease that could destroy the state’s citrus industry. The announcement also serves to highlight the role Los Angeles residents must play in protecting California’s $2.4 billion commercial citrus industry through the #CitrusMatters initiative.

To date, the psyllid has reached 15 counties throughout Southern California[2]; however, HLB has been recorded in only one tree in California[3] – a lemon/pummelo tree found on residential property in the Hacienda Heights neighborhood of Los Angeles in 2012. For every Californian who cares about citrus, that tree, which has since been removed and destroyed, serves as a warning that all citrus trees are at risk of being affected, from the trees that decorate their neighborhood to the commercial groves nearby.

The #CitrusMatters initiative from Bayer CropScience and California Citrus Mutual encourages all residents of California and Los Angeles – where there are more citrus trees on residential property than in commercial groves – to take action to help prevent the spread of the ACP. It is essential that homeowners with citrus trees on their property understand how to protect their trees and know what to do if they suspect trees are infected. If left untreated, the insects can move quickly from one tree to the next, eventually spreading to the commercial groves that cover much of Southern and Central California.There are a number of ways the Los Angeles community can get involved with the campaign to help prevent the spread of ACP and protect California citrus, including:

Spreading the word and increasing awareness about the disease, the ACP and why they love citrus, using the hashtag #CitrusMatters. Through each use of the hashtag (now through September 30), Bayer CropScience will contribute $1, up to $25,000, to advance existing and future research to find a solution to HLB in California.
Visiting CaliforniaCitrusThreat.org to access HLB and ACP resources specific to Los Angeles County.
Monitoring their trees, contacting the California Department of Food and Agriculture (CDFA) Exotic Pest Hotline at 1-800-491-1899 if they think they’ve spotted an infestation and having their trees checked.
Becoming familiar with solutions[4] available that can protect against ACP in their trees

The citrus industry has a storied history in Los Angeles. Southern California’s first orange grove[5] was planted at San Gabriel Mission in 1804, and the state’s very first commercial citrus operation[6] was established in what is now downtown Los Angeles.

“Almost all of us native Los Angelenos have some kind of memory of grabbing a lemon off of the trees in our yards growing up or stepping outside during the spring and taking in the fresh scent of orange blossoms,” said Cedillo when he presented the announcement. “The city of Los Angeles recognizes the contribution citrus adds to California’s economy and our residents’ lives.”

“The Los Angeles area has played a vital role in the industry’s history,” said Joel Nelsen, president of California Citrus Mutual. “We’re excited to see residents celebrate citrus and rally around our mission to protect it from the spread of HLB.”

The #CitrusMatters initiative is part of the ongoing effort by Bayer CropScience to provide citrus growers across the nation with solutions to help combat ACP and HLB. To learn more about the #CitrusMatters initiative and how homeowners, commercial citrus growers and citrus lovers alike can help save citrus, visit CitrusMatters.us.

For more information on Bayer CropScience’s citrus portfolio, please visit: https://www.bayercropscience.us/crops/citrus!

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[1]http://www.aphis.usda.gov/plant_health/plant_pest_info/citrus_greening/downloads/pdf_files/nationalquarantinemap.pdf

[2] http://www.californiacitrusthreat.org/pdf/ACP-Quar%20Expansion_2-17-2015_CA-AZ.pdf

[3] http://californiacitrusthreat.org/news/huanglongbing-citrus-greening-disease-found-in-california.php[4] http://www.bayeradvanced.com/find-a-product/insects-pests/fruit-citrus-vegetable-insect-control

[5] http://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=924

[6] http://californiacountry.org/features/article.aspx?arID=695

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Bayer CropScience is committed to bringing new technology and solutions for agriculture and non-agricultural uses. For questions concerning the availability and use of products, contact a local Bayer CropScience representative, or visit Bayer CropScience online at www.bayercropscience.us.

Visit the Bayer Connect – Social Hub for all Bayer CropScience social media, recent news, blog posts, videos and more.

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About Bayer CropScience

Bayer is a global enterprise with core competencies in the fields of health care, agriculture and high-tech materials. Bayer CropScience, the subgroup of Bayer AG responsible for the agricultural business, has annual sales of EUR 9,494 million (2014) and is one of the world’s leading innovative crop science companies in the areas of seeds, crop protection and non-agricultural pest control. The company offers an outstanding range of products including high value seeds, innovative crop protection solutions based on chemical and biological modes of action as well as an extensive service backup for modern, sustainable agriculture. In the area of non-agricultural applications, Bayer CropScience has a broad portfolio of products and services to control pests from home and garden to forestry applications. The company has a global workforce of 23,100 and is represented in more than 120 countries. This and further news is available at: www.press.bayercropscience.com.

About California Citrus Mutual

California Citrus Mutual (CCM) is a citrus producer’s trade association whose 2,200 grower members comprise 60 percent of California’s 275,000 acre, $2.4 billion citrus industry. The Exeter, California-based organization was founded in 1977 by those who felt the need to unite their fellow growers into a cohesive, powerful force. Throughout the years, CCM has brought to fruition many of the goals of the founding fathers and has developed into a dominant force from within as well as outside the industry. Having attained the privilege to be called the “voice of the citrus grower,” CCM remains the vessel which successfully navigates the often rocky waters of the business interest of its membership. For more information on CCM, visit www.cacitrusmutual.com.

California Ag Today2016-05-31T19:28:12-07:00July 2nd, 2015|

MRLs and Crop Protection Materials are Improving but Complicated

MRLs and Crop Protection Materials are Improving but Complicated!

By Laurie Greene, Editor and Patrick Cavanaugh, Associate Editor

Rachel Kubiak, Environmental & Regulatory Affairs director with the Western Plant Health Association, based in Sacramento, commented that crop protection materials are improving. They target specific pests and they are set to maximum residue levels (MRL’s) when sold domestically or internationally. Yet, they are quite complicated.

“The materials are getting better,” Kubiak said, “but I would say that there is a large component that I don’t believe the activist community understands,” noted Kubiak.

Richard Cornett, director of communications for WPHA, blogged, “What most people are unaware of is that there is a highly integrated and multi-layered process of safety procedures to assure that pesticides are accessed for their safe use around humans and in the environment.”

U.S. EPA (a) scientifically reviews all pesticides for safety before registration, (b) involves EPA scientists at the Office of Pesticide Programs, the Department of Fish and Wildlife, as well as other departments, (c) guarantees that any pesticide used in the U.S. has been accessed and is safe and (d) applies tolerances only to produce grown in or imported into the United States.

In California, the Department of Pesticide Regulation (DPR) enforces EPA tolerances by sampling produce for pesticide residues from throughout the channels of trade, both domestic and imported, including wholesale and retail outlets, distribution centers, and farmers markets.

“There are complications in making those products available to our growers,” Kubiak said, “because so much of what we produce in California is exported to other countries, and this MRL issue complicates things.”

Foreign countries follow an international standard called CODEX Alimentarus which contains a list of pesticide MRLs. EPA tolerances and International Codex MRLs are not harmonized; residue on an imported commodity can trigger a no-tolerance-established assessment and removal by California DPR while being a legal residue in other countries.

“I think this is a large area in which we could do better. Educating those who don’t live in our world on the difficulties in bringing new products to market isn’t as simplistic as they like to make it seem,” said Kubiak.

Patrick Cavanaugh2016-05-31T19:28:12-07:00July 2nd, 2015|

Wine Cork Debate: Synthetic vs. Natural Corks

St. Francis Winery Returns to Traditional Natural Corks

By Laurie Greene, California Ag Today Editor

Christopher Silva, President and CEO of St. Francis Winery in Sonoma County, spoke with California Ag Today on the cork debate: synthetic vs. natural corks.

“Our founder, Joe Martin, back in the 1990’s, was not satisfied when he was traveling around the country,” said Silva. “He discovered too many bottles of St. Francis wine were compromised by faulty corks. TCA (trichloroanisole) was creating bacteria issues and damaging the integrity of the wine.”

“So, starting in 1993, we moved to synthetic corks,” Silva explained. “However, internally, we tested and even bottled a case or two of our own wines in natural cork, and we’ve been satisfied that the technological advances in growing natural cork, culling the very best cork from cork forests, and significantly elevated sorting and testing techniques have contributed to eliminating much of the taint problem.”

“There is no perfect closure,” lamented Silva. “I hope that someone finds it! I promise you, I will call California Ag Today the day I find that perfect closure. But we are satisfied that the quality of natural cork has evolved so significantly that the issues we encountered twenty years ago have been largely eliminated,” said Silva.

“Our shift back to natural cork has been a logical choice because it’s been part of our certified sustainable practices,” Silva said. “Remember that natural cork is biodegradable, so it is certainly a certified, sustainable choice. We are trying to care for not only the grapes and the wines that we are so very proud of, but we are all neighbors and inhabitants of this planet, and we think that moving towards significantly consistent sustainable practices is the right thing to do—which makes it the right way to run a business,” Silva said.

“Our biggest issue in winemaking has been cork taint,” Silva explained. “We don’t want a wine that we made compromised by a cork that is contaminated, even slightly, by bacteria. But, we are satisfied that, over the years, there have been all kinds of improved techniques regarding examining the corks, cleaning the corks, and x-raying the corks. Significant advances in technology have eliminated the problem to such an extent that we don’t need to worry about cork taint, which was the biggest issue for us,” Silva said.

“We want the customer to know that when they buy a bottle of St. Francis wine, they are not just buying a product—as wonderful as that product is—and as proud as we are of it—they are buying an experience. Everything from looking at the bottle, studying the bottle, opening the cork, and enjoying the wine inside,” he said.

Featured Photo: Christopher Silva, St. Francis Winery

Patrick Cavanaugh2016-05-31T19:28:12-07:00June 30th, 2015|

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