Joel Nelsen on New Cases of HLB in San Gabriel

By Charmayne Hefley, Associate Editor

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.”

Patrick Cavanaugh2021-05-12T11:03:04-07:00February 8th, 2016|

California Weed Science Society Meeting

By Charmayne Hefley, Associate Editor

The California Weed Science Society (CWSS) held their annual meeting in Sacramento from January 13-15, 2016. The meeting fostered collaboration between Pest Control Advisors (PCAs) and farmers as they gathered to learn the newest innovations in weed science.

John Roncoroni, weed science farm advisor for the UC Cooperative Extension in Napa County, as well as the outgoing CWSS president, said four Fresno State students gave presentations at the meeting on their research. “We’ve had really great student participation—the amount of student scholarships we’ve given is up this year, the posters, the students and our attendance this year is up,” Roncoroni said. Pre-registration was about 530 people.

Roncoroni suspects that rain pushed people to attend, “because—with that rain—we’re looking at more weeds this year. So people are looking for the newest information on weeds. This year’s conference really has done a really good job of putting that information together. Kate Walker, our program chair, has really done a fine job of putting together a great program.”

Kate Walker, technical service representative for BASF Corporation, is also the new, incoming CWSS president.

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Links:

California Weed Science Society (CWSS)

The CWSS recently updated its published textbook, Principles of Weed Control, 4th Edition, that focuses on the applied aspects of weed control. The purpose of this textbook is to provide access to the fundamental principles and concepts of weed management in California. The book is designed for use at the college level by students who have an interest in pursuing a plant science or associated background of course work. It is also a useful resource for individuals studying to become PCAs and applicators or for consultants who work in weed science. For more information, go to the CWSS website Publications page.

Patrick Cavanaugh2021-05-12T11:03:04-07:00February 5th, 2016|

EPA on Farming

EPA: Domestic Farming is Critical

Importing All Food from Other Countries is Risky, Part 1

By Laurie Greene, Editor

Editor’s note: California Ag Today was granted an exclusive interview with Ron Carleton, counselor to the U.S. Environmental Protection Agency (EPA) Administrator Gina McCarthy for agricultural policy. While we know that air and water quality are top priorities for the EPA, we asked Carleton to describe the outlook of the EPA on farming.

“The importance of our agricultural sector to our country, to our consumers, to our economy, to our job creation, to our rural communities: Absolutely, we have to preserve that,” said Carleton.

“We used to have discussions in the ’70’s, and the 80’s and the 90’s about energy independence,” he said, “because of the problems caused by importing so much of our energy from abroad, particularly in instances from countries that weren’t necessarily friendly to us.”

Carleton noted the same can be said with food imports. “Imagine we have that same situation for most of our food. I think that poses a serious risk to food safely. I think that poses a serious risk to affordability. I think that poses a serious risk to quality and quantify, and we can’t do that,” Carleton said. “It is incredibly important that we preserve our agricultural productive capability in this country.”

“I believe our country can preserve our agricultural base, and I think we can do that in a way that is also environmentally friendly,” noted Carleton. “So, interesting times; interesting challenges. But I firmly believe the men and women who farm in our country are up to the challenge.”

California Ag Today2016-05-31T19:24:13-07:00February 3rd, 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

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Additional Links:

Citrus Insider

Save Our Citrus

California Citrus Mutual

California Ag Today2021-05-12T11:03:04-07:00February 3rd, 2016|

Biocontrols Conference & Expo

Biocontrols Conference & Expo, March 3-4, 2016, Monterey, California

Learn everything you need to know about agricultural biocontrols from the experts.

Join your peers, leading organizations and industry experts at the Biocontrols Conference & Expo for two days of hands-on education devoted solely to the use of biocontrols in agriculture presented by Meister Media Worldwide, a media solutions provider for worldwide specialized agriculture, in cooperation with the Biopesticides Industry Alliance (BPIA), and the California Association of Pest Control Advisers (CAPCA). The Biocontrols Conference offers educational sessions, continuing education credits (CEUs) for pest control advisers (PCAs), certified crop advisers (CCAs) and other state certification programs, and an expansive Expo with top suppliers of biocontrol products and related services.

New for 2016!

Two optional, concurrent add-ons on the last afternoon of the event (additional fees may apply):

1.Tour of two leading Monterey-area specialty-crop growing operations that use biocontrols as part of their integrated pest management programs:

-Biocontrols USA Tour

-Pacific Plug and Liner, Watsonville, CA

2.Hands-on workshop on the use of beneficial insects in a greenhouse environment

Agenda Sampling:

-8 Tips To Get The Most Out of Your Biocontrols Program

-A look at the most common active ingredients and how to handle them to get the best results, Lance Osborn, UF IFAS

-What’s Next In Biocontrol?

-Regulatory Update, Bob McNally, EPA

-Pipeline Update – what types of new products are coming?

-The Future Isn’t Biocontrol. It’s IPM

-Understand The Value of Biopesticides – Do they Pencil Out for You?

-How To Evaluate/Field Test a New Research Biopesticide

-Biopesticides and Beneficials: Make Them Work Together, Frank Sances, Pacific Ag

-Fruit and Tree Nuts: Hands-on, How-To Topics

-Using Green Lacewings in almond and pistachio, Brad Higbee, The Wonderful Co.

-Vegetables: Hands-on, How-To TopicsMycorrhizae: Why it Makes Sense in Strawberries, Johan Pienaar, Mycorrhizal Applications.

Monterey Bay, the conference location, is in close proximity to the heart of major California specialty-crop production: vegetables, fruits, and ornamentals in Monterey County and the Salinas Valley, and affords you the opportunity to tie-in a long weekend in the Monterey Bay area.

Meister Media Worldwide and its leading family of brands including American Vegetable Grower®, Western Fruit Grower® / American Fruit Grower® and Greenhouse Grower®, CropLife®,

Having celebrated its 15th anniversary in September 2015, BPIA is dedicated to fostering adoption of biopesticide technology through increased awareness about their effectiveness and full range of benefits to a progressive pest management program.

Dedicated to the professional development and enhancement of its members’ education and stewardship, the California Association of Pest Control Advisers (CAPCA) represents more than 75% of the nearly 4,000 California EPA licensed pest control advisers (PCAs) that provide pest management consultation for the production of food, fiber and ornamental industries of this state.

California Ag Today2021-05-12T11:05:58-07:00January 28th, 2016|

Dogs Detect Citrus Diseases

By Charmayne Hefley, Associate Editor

Animals have been known to be able to use their senses to detect things that humans require extensive technology to detect. Mary Palm, USDA Animal and Plant Health Inspection Service (APHIS) national coordinator for citrus pest programs, said dogs have been successfully trained to detect canker disease, and now Huanglongbing disease (HLB), in citrus.

“Over the past four to five years,” Palm said, “a researcher in Florida first determined dogs could actually detect canker, began training dogs,” Palm said, “and then trained different sets of dogs to detect it. It turned out that they were very good at it. In a demonstration there, none of the people could find any symptoms in a particular citrus tree, but the dogs came through and found the symptoms. Once the people came back and looked very closely, sure enough, it was there.”

Palm said the USDA Huanglongbing Multi Agency Coordination (MAC) Group funded research to determine if dogs could detect HLB in citrus as well as they detected canker. There are now five dogs being trained and tested daily. If grower demand increases, the use of canines in pest management could increase.

Palm said they will probably come up in the next year or two with certification criteria for other companies to train dogs and certify them as detectors. Palm said, “They would be able to get a certificate to show they had conducted all of the tests necessary with the [proper] degree of accuracy.” Palm said the dogs in this program have a 99 percent success rate at detecting HLB disease.

Palm said approximately 80 trees are put inside every night, the positive ones in one greenhouse and the negative ones in another. The trees are taken out the next day and positioned in different patterns for dogs to inspect throughout the day. When the dogs are brought out, even their trainers don’t know which trees are positive or negative. The trained dogs are more than 99 percent accurate.”

Link:

USDA Huanglongbing Multi Agency Coordination (MAC) Group Funded Projects: List for the Control and Mitigation of Huanglongbing FY 2015

Patrick Cavanaugh2021-05-12T11:03:04-07:00January 25th, 2016|

Red Scale Challenges Citrus

Besides HLB, Red Scale Challenges Citrus

By Charmayne Hefley, Associate Editor

While much of the talk in the citrus industry is about how to fend off Huanglongbing (HLB) disease, one of the most devastating citrus diseases, Dr. Beth Grafton-Cardwell, director of the University of California Agriculture and Natural Resources Lindcove Research and Extension Center, reinforced that HLB isn’t the only pest that can overtake California’s citrus orchards.

Grafton-Cardwell explained how last year’s warm winter led to an increase in the California red scale, Aonidiella aurantii, population. “Normally we have cold conditions that kill off the younger instars of the scales and [basically] restarts the system. But we didn’t really have any low temperatures last year, so the scales didn’t go into their usual hibernating phase. They just kept cranking out crawlers and adding in an extra generation or two of production. So the higher number of scales on the trees made it much more difficult for the growers to control.”

Grafton-Cardwell explained while it is difficult to speculate whether this coming year will yield another large population of the California red scale, “We have already received more moisture as a result of seasonal rainfall, which should help hinder the pest. Hopefully we’ll get some cooler weather conditions too–not freezing because citrus groves don’t like freezing temperatures–but cold enough to knock out some of the scales and get the population back under a manageable level,” she said.

Nevertheless, despite the challenges that California red scale can cause, Grafton-Cardwell said, overall, citrus growers need to keep their focus on the fight against the Asian Citrus Pysllid (ACP), Diaphorina citri, and its ability to spread HLB. “Growers need to start thinking in terms of: California has the [HLB] disease and it’s going to start spreading in southern California soon,” Grafton-Cardwell said. “What do we do to prevent it from spreading up here into the San Joaquin Valley?”

Photo source: “Life Stages of California Red Scale and Its Parasitoids,” UC ANR Publication #21529, by Forster, Lisa D.; Robert F. Luck; and Elizabeth E. Grafton-Cardwell; with photos by L. Forster and M. Badgley)

Patrick Cavanaugh2021-05-12T11:03:04-07:00January 20th, 2016|

USDA Pesticide Data Program Report Confirms Food Safety

USDA Pesticide Data Program Report Confirms Food Safety:

More than 99 percent of sampled food tested below allowable pesticide residue levels!

The U.S. Department of Agriculture (USDA) has confirmed again in its annual report that American consumers can focus on the nutritional benefits of conventional and organic produce without concern for pesticide residues. Over 99 percent of fresh and processed food available to consumers tested below allowable pesticide residue levels, as detailed in the 24^thPesticide Data Program (PDP) Annual Report released on January 11, 2016 by the USDA Agricultural Marketing Service (AMS). Only .36 percent [0.36%] of the products sampled through the PDP had residues above the U.S. Environmental Protection Agency (EPA) established tolerances, giving consumers plentiful options to meet their daily nutritional needs.

“Today’s consumers can choose from food produced with a variety of farming methods and necessary crop protection strategies and be confident that it will sustain and enrich their families’ lives,” stated Jay Vroom, president and CEO of CropLife America (CLA). “Across the nation, our growers continue to use the most advanced crop protection technology available to target specific crop threats. From precision agriculture to integrated pest management, farmers in the heartland, the plains, coastal areas and everywhere in between are pushing forward with the best ways to produce food for their communities and for the country.”

PDP researchers tested a total of 10,619 samples of fresh and processed fruit and vegetables (8,582 samples), oats (314 samples), rice (314 samples), infant formula (1,055 samples), and salmon (354 samples). To ensure the samples were representative of the U.S., researchers collected data in a variety of states throughout different times of the year. The findings support the Dietary Guidelines for Americans 2015-2020, recently released by USDA and the U.S. Department of Health, which encourage consumers to eat more fruits and vegetables.

“With rapid advancements in computing technology, the space for developing new ways to fight agricultural threats is increasing exponentially,” stated Dr. Janet E. Collins, senior vice president of science and regulatory affairs at CLA. “Consumers have a number of options at the grocery store, thanks in large part to the work of the scientific community involved in research and development, the companies that are manufacturing products, and America’s farmers and ranchers. The 2014 PDP report demonstrates again that, with the sound science-based regulation of pesticides and commitment from the industry, farmers and other stakeholders, we can reach toward making sure that every American, no matter their wallet size or geographic location, can access healthy food.”

A 2012 report from CLA demonstrates that crop protection has made healthy food more financially accessible to the American consumer, providing a 47.92 percent savings in overall grocery bills for a family of four in the U.S.¹ In addition, increased agricultural production, due to advanced pesticides, has created an additional 1,040,661 jobs generating more than $33 billion in wages—all while decreasing the need for tillage operations, thereby reducing fossil fuel use by 558 million gallons per year.

Recent reports from the United Nations also show that an increasing number of people worldwide have gained access to healthy food. Over the past 25 years, the number of people worldwide who are hungry has declined from one billion to about 795 million, or about one person out of nine—which means that 2 billion people have avoided a “likely state of hunger” given the global population increase of 1.9 billion people since 1990-92.² Multiple factors have contributed to the decrease in global hunger, including the integration of family farmers and small holders in rural areas into well-functioning markets for food, inputs and labor.

The PDP was established in 1991 for the purpose of collecting data on pesticide residues found in food. Information collected by the PDP is sent to the EPA to help the agency conduct important dietary risk assessments. The USDA also uses this data in the development of integrated pest management objectives. Since the PDP program was initiated, 109 different commodities have undergone testing. A complete version of the 2014 Annual Summary is available at www.ams.usda.gov/pdp.

¹ CropLife America. The Contributions of Crop Protection Products to the United States Economy.

² Food and Agriculture Organization of the United Nations, the International Fund for Agricultural Development and the World Food Program. State of Food Insecurity in the World 2015.

Established in 1933, CropLife America (www.croplifeamerica.org) represents the developers, manufacturers, formulators and distributors of plant science solutions for agriculture and pest management in the United States. CropLife America’s member companies produce, sell and distribute virtually all the crop protection and biotechnology products used by American farmers. CLA can be found on Twitter at @CropLifeAmerica. CLA supports CropLife StewardshipFirst.

California Ag Today2021-05-12T11:03:05-07:00January 13th, 2016|

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.”

California 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.

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

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Patrick Cavanaugh2021-05-12T11:05:58-07:00January 12th, 2016|

Grower-PCA Communication is Critical

By Laurie Greene, Editor

Emily Symmes, UC Cooperative Extension Integrated Pest Management Advisor, Butte County, is amazed at the professionalism of growers and Pest Control Advisors (PCAs). “I deal directly with growers and land managers, as well as crop advisors and pest control consultants” said Symmes, “and everyone has so much to do out there, so grower-PCA communication is critical. Sometimes it is amazing how they get it all done. I feel lucky, as I get to focus on the pest management and other production activities throughout the season,” she noted.

Symmes maintains there has to be a lot of communication back and forth between the growers and PCAs and herself. “And within each question there is a deeper conversation,” she elaborated, “but it can get lost in the shuffle of running from one thing to the next. Everything is very time sensitive in agriculture; we don’t have control over weather and things that tend to drive pest population cycles.”

“So within each of those key pest management questions, there is a subset of questions:

How do we know that it is time?
Are we doing the right thing at the right time?
Are we using the right materials?
Are we considering the big picture?’”

“The other big key ingredient is follow-up—evaluating:

How did we do?
Did the treatment work?
Did it cause any potentially negative impacts that we weren’t aware of?
Did we have to come back and do something additional (after-the-fact)?
More questions about the treatment, time, and material.”
PCA Responsibilities (CA DPR)

And on any California Department of Pesticide Regulation (DPR) recommendation, there is a question before the last signature line, ‘Have you thought of any other alternatives before you make this application?’ IPM practitioners sometimes misunderstand this to mean, ‘Well they don’t want us to treat.’ But it is really an acknowledgement that we know how important all of our management tactics are,” Symmes noted.

“Cultural practices are important, pesticides are important, but knowledge is really the key ingredient. Growers and PCAs are knowledgeable, have explored the alternatives and know what is going on in this particular orchard block they are signing this legal document for. Honestly, I think we do a great job.”

“I think California has done a fantastic job with this,” said Symmes,”but is there room for improvement? I think there always is.”

California Ag Today2021-05-12T11:05:59-07:00January 7th, 2016|

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California Ag News…
At Your Fingertips!

Joel Nelsen on New Cases of HLB in San Gabriel

California Weed Science Society Meeting

By Charmayne Hefley, Associate Editor

________________________

Links:

EPA: Domestic Farming is Critical

Importing All Food from Other Countries is Risky, Part 1

By Laurie Greene, Editor

Breaking News

Citrus Insider Reports New HLB Confirmed in San Gabriel

__________________

Additional Links:

Biocontrols Conference & Expo, March 3-4, 2016, Monterey, California

Learn everything you need to know about agricultural biocontrols from the experts.

Dogs Detect Citrus Diseases

Besides HLB, Red Scale Challenges Citrus

USDA Pesticide Data Program Report Confirms Food Safety:

More than 99 percent of sampled food tested below allowable pesticide residue levels!

Protecting California Citrus from ACP

Grower-PCA Communication is Critical

Sign Up For Our Newsletter!

California Ag News… At Your Fingertips!

California Ag News…
At Your Fingertips!