Jasieniuk on Weed Evolution

Tracking Herbicide Resistance in Weed Evolution

By Emily McKay Johnson, Associate Editor

Marie Jasieniuk, professor and weed scientist at UC Davis College of Agricultural and Environmental Sciences, discussed her groundbreaking research, “I work on the population genetics and evolution of agricultural weeds and invasive plants,” she said. “We use molecular tools to look at the origins and spread of weeds. We also use molecular tools and genetic studies to understand the evolution of herbicide resistance in weeds,” Jasieniuk added, “to be able to propose management approaches that reduce the likelihood of further evolution and spread of resistant weeds.”

UC Davis Annual Weed Day 2016

Jasieniuk and her team identify the origins of invasive plants, and determine how they were introduced. “We study how they were introduced, how they have spread and whether they have been introduced multiple times. Again, if we understand how they’re spreading, we can do something to try to stop the spread,” she said.

Italian rye grass, a weed Jasieniuk is currently studying, is problematic because it is resistant to Roundup, a popularly used weed and grass killer by growers. “UC ANR Cooperative Extension specialist, now emeritus, Tom Lanini, and I sampled over 100 locations of Italian rye grass and tested them for resistance to Roundup ten years ago,” she said about the project, funded by USDA. “Last year, we re-sampled all of those sites, and we’re re-testing to see if there’s been an increase or a decrease or no change in resistance to glyphosate, to Roundup,” she said.

Roundup isn’t the only weed and grass killer available on the market. “We’re looking at resistance to three other herbicides,” she said. Working with growers to determine the most efficacious weed treatments that also reduce the likelihood of wood resistance to herbicides,” Jasieniuk explained, “We interview growers about their herbicide use, non-chemical approaches, and integrated management techniques to identify management practices that correlate highly with low or no resistance,” she explained.

Resistance management is found to be more effective with a rotation of various herbicides. “What you want to do is rotate different types of herbicides with different modes of action,” Jasieniuk said. “Perhaps do tank mixes and incorporate non-chemical approaches as well,” she added.

Eliminating weeds can be as simple as disking and digging them out with a shovel when there are only a few. “I think, in many cases, this would have done a lot to prevent new weeds from coming in and certainly resistant weeds from spreading,” she noted.

California Ag Today2021-05-12T11:05:53-07:00July 11th, 2016|

Brexit Affects U.S. Agricultural Trade

Joel Nelsen’s Commentary on Washington D.C. Meetings, Brexit and U.S. Agricultural Trade

By Lauren Dutra, Associate Editor

Joel Nelsen, president of California Citrus Mutual based in Exeter, Calif., spoke about his advocacy for growers and the impact Brexit has on U.S. agricultural trade as he arrived at the Fresno Yosemite International Airport from Washington, D.C. last week. Brexit is an abbreviation of “British exit,” which refers to the June 23, 2016 referendum by British voters to exit the European Union (EU), according to Investopedia.

Nelsen explained, “There were two missions I was on while I was in Washington. One had to do with a proposal to allow lemon imports from Argentina. We’re definitely opposed to it because of pests and diseases, and a lack of transparency in that country over the last one to two decades.”

“We have a comment period,” Nelsen continued, “but we have asked for an extension on that comment period because of the scope of the rule and the economic impact, and we haven’t heard a word on that,” he said. “We met with our colleagues and friends in Washington, D.C. Senator Feinstein, Senator Boxer and a couple of House Office Committees have agreed to make a phone call to the Secretary of Agriculture and get a determination on that,” he said.

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

The second purpose of Nelson’s trip was to discuss trade and the impact on the U.S. economy due to the recent Brexit, as Nelsen is chairman of the Fresh Fruit and Vegetable Agricultural Technical Advisory Committee (ATAC), a national trade committee that offers information and advice about agricultural products and trade issues to the USDA Secretary of Agriculture and the U.S. Trade Representative. “People from across the country came, and we talked about trade subjects, such as the Trans-Pacific Partnership (TPP) agreement and Britain’s separating itself from the EU,” said Nelsen. “It’s obvious that this upset everybody; Ambassador Michael Froman, United States Trade Representative (USTR) who advises the president on international trade and investment issues, said, “I know what I don’t know, and I don’t know a lot right now.”

Nelson explained, “We think [Brexit] will slow down the fresh fruit and vegetable sector, as well as the passage of the Transatlantic Trade and Investment Partnership (T-TIP). According to the USDA Foreign Agricultural Service, since the U.S. market share of agricultural products and food imported by the EU—the world’s largest importer in the category—is shrinking despite continued growth of the EU market, T-TIP negotiations offer a major opportunity to address unjustified tariff and non-tariff trade barriers to U.S. exports.

“Quite frankly,” Nelsen summarized, “we’re less than excited about [T-TIP] because it didn’t address the inherent problem that we have from competition: fresh fruit and vegetable producers in the EU get a direct subsidy and growers in the United States do not.”

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Some additional members of the ATAC for Trade in Fruits and Vegetables include:

Julie Adams, Almond Board of California
James R. Cranney, Jr., California Citrus Quality Council
Robert Guenther, United Fresh Produce Association
Richard Hudgins,
California Canning Peach Association
Randy Hudson, National Pecan Growers Council
Marcy L. Martin, California Fresh Fruit Association
Matthew McInerney, Western Growers
Ken Melban, California Avocado Commission
Mike Montna, California Tomato Growers Association
Jim A. Zion,
Meridian Growers, LLC

California Ag Today2021-05-12T11:03:00-07:00July 6th, 2016|

Timorex Gold, Broad-spectrum Biofungicide

Biofungicide Timorex Gold to Help Western Vegetable Growers Fight Disease Pressure

By Patrick Cavanaugh, Farm News Director

The U.S. EPA has approved Timorex Gold, a new broad-spectrum reduced-risk biopesticide that is already a leading biofungicide in Latin America to control black sigatoka, a leaf-spot fungal disease on bananas, for various domestic crops such as tomatoes, strawberries, as well as other berries, cucurbits, grapes, tree nuts, and lettuce.

Timorex Gold is well positioned for American crops because it is known to be effective on powdery mildew and Botrytis on strawberries and tomatoes, plus bacterial blight on tomatoes.

Sarah Reiter, country manager of STK Stockton, an innovative Israeli company that opened its U.S. headquarters in Davis, CA. “We are very excited about the products performance we are seeing in areas where it is registered,” said Reiter. “We are happy with the label the EPA granted us. We still await registration in California and anticipate it next year or possibly late this season.”

Reiter noted the highly effective active ingredient in Timorex Gold, the plant extract Meluleuca alternifolia, or tea tree oil, gives growers a powerful new tool to control both bacteria and fungi diseases. “We know growers do not have a lot of choices for bacterial control,” said Reiter, “so any new active ingredient is a good thing. This product has the added bonus of being a fungicide too.”

“Timorex Gold has been established as a primary control product for sigatoka because it performs so well,” Reiter commented. “Growers use it because of its profile, and it’s easy to use. And while the product is a biopesticide, once the growers get it in their hands, they tend to forget it’s a biopesticide because it performs as if it is a synthetic material.”

“As an industry we have been looking for this for quite a long time,” Reiter reflected. “While biologics have been around for a century, historically, growers would have to give up some levels of control in order to implement them into a conventional program. We do not see that loss when using Timorex Gold against sigatoka disease.”

“Our expectation in the U.S. is that growers will see that same high level of performance when they use the product here,” Reiter said. “And since Timorex Gold is a biological, there is no concern for Maximum Residue Level (MRL) data because there is no residue on the crop. The product will have very short re-entry intervals (REIs) and preharvest intervals (PHIs), as well as flexible application intervals, a strength that growers like because it gives them a lot of flexibility to implement the product into their program when they need to instead of having to manage REIs and PHIs.”

In addition, Timorex Gold has a very low designation of FRAC 7¹, which means the product has a unique mode of action that can be used in alternate succession with other fungicide modes of action to prevent the development of resistance.

Concurrently, STK Stockton continues to invest heavily in its new technology pipeline with the intention of bringing more innovative biopesticides into different markets. As part of these efforts, the company has recently announced the appointment of Shay Shaanan as the new vice president R&D, leading the company’s activities. The former global development manager of the fungicides division at ADAMA (formerly Makhteshim Agan), Shaanan has over 15 years of experience in research and commercialization of crop protection products.

“Having Shay join our team marks another significant milestone in our growth strategy. It reflects our commitment to advance our technologies and provide the agriculture industry with new solutions for sustainable agriculture.” explained Guy Elitzur, CEO of STK Stockton. “Shay will lead our R&D and will be of enormous value in moving our company forward. Additionally, we will be looking for in-licensing partners, including bio companies in the U.S. to broaden our product offerings.” said Elitzur.

The products of Stockton will be sold under the Syngenta brand for Botrytis and Powdery Mildew in ornamentals globally. The biofungicide technology complements the comprehensive fungicide portfolio of Syngenta and will help to provide its customers with innovative sustainable tools for disease resistance management.

“We are very excited about this agreement,” Elitzur commented, “as Syngenta is the perfect partner for our new products in ornamentals.”

________________________________

¹FRAC is a Specialist Technical Group of CropLife International (CLI) that provides fungicide resistance management guidelines to prolong the effectiveness of “at risk” fungicides and to limit crop losses should resistance occur.

The main aims of FRAC are to:

Identify existing and potential resistance problems.
Identify existing and potential resistance problems.
Collate information and distribute it to those involved with
fungicide research, distribution, registration and use.
Provide guidelines and advice on the use of fungicides to reduce the risk of resistance developing, and to manage it should it occur
Recommend procedures for use in fungicide resistance studies.
Stimulate open liaison and collaboration with universities, government agencies, advisors, extension workers, distributors and farmers.

California Ag Today2021-05-12T11:05:54-07:00June 28th, 2016|

Steve Koike on Resistant Cultivars

The Search for Resistant Cultivars

By Emily McKay Johnson, Associate Editor

In the second part of our series with Steve Koike, plant pathology farm advisor for UC Division of Agriculture and Natural Resources, Cooperative Extension in Monterey County, the focus is on the critically needed research on resistant cultivars. Koike, who has focused his research since 1989 primarily on the understanding of disease systems and the investigation of new methods of disease control, said, “The role or the need for resistant cultivars is tremendous.”

“Some good case studies of resistant cultivar research address soil-born problems on lettuce,” Koike explained. “For example, Fusarium wilt and Verticillium wilt on lettuce could be managed lightly; but in order to overcome those diseases, resistant lettuce varieties need to be in place.”

Steve Koike, UC Cooperative Extension, Monterey County.

“First discovered in 1995 on the Central Coast,” said Koike, “Verticillium wilt has the potential to infect and damage numerous different crops. And although Fusarium wilt was typically unseen in the San Joaquin Valley, it has recently begun to appear on the Central Coast.”

Continued improvement of management techniques upon discovering initial disease symptoms is necessary, according to Koike. “Symptoms of the disease usually appear on the lower leaves of plants, around the edges, and the areas between the veins can turn a yellowish-brown.”

“Strawberries currently have three really important disease pressures state-wide: Verticillium wilt, Macrophomina (charcoal rot) and Fusarium wilt,” Koike commented. “Even the fumigation tools we have are not cleaning them up 100 percent, so we have problems.”

“We will continue to have problems,” Koike elaborated, “until there are truly resistant strawberry varieties to those pathogens. Plant breeders understand that IPM management of these diseases is so dependent on developing resistant varieties,” he said, “but we’re not there yet. We do not yet have truly resistant lettuce or strawberry varieties out in the field,” Koike said.

_______________________________

Koike and his fellow researchers discovered a new race of the downey mildew pathogen in spinach that has been designated race 16. While there are some varieties that are supposedly resistant to race 16, Koike noted that there is still more research to be done.

To read the first part of our series on Downey Mildew, click here.

California Ag Today2021-05-12T11:05:54-07:00June 27th, 2016|

Postharvest Short Course Focused on Taste and Quality

UC Davis Postharvest Course Covers Food Loss, Produce Handling

By Lauren Dutra, Associate Editor

The 38th annual Postharvest Technology of Horticultural Crops Short Course concluded TODAY, June 24 at UC Davis. Presented by Beth Mitcham, director of the Postharvest Technology Center, the course focused on postharvest produce quality and safety.

Beth Mitcham, Director of the Postharvest Technology Center at UC Davis.

“This class provided a really broad overview of all the topics that are relevant for postharvest handling of produce, including fruits, vegetables, nuts, and also ornamentals,” said Mitcham. “We cover the crops that are grown in California, but because our audience includes a lot of people from around the world who want to learn the basics about postharvest handling, we also cover a few crops that aren’t grown in California for commercial purposes. Furthermore,”she noted, “we also address some of the latest technologies that are available for maintaining excellent quality,”

Maintaining a good cold chain throughout the entire shipping line is critical, according to Mitcham. “We talk a lot about temperature,” she elaborated. “In fact, we tell students the three most important things about postharvest biology and technology are: temperature, temperature and temperature. We discussed many other technologies during the week, but they are secondary to good temperature management,” she noted.

Mitcham also mentioned food waste and how to control it. “So much effort goes into growing the crop, which includes harvesting at the prime of ripeness and getting it in the pre-cooler, on the trucks and to the market. But, people buy it, put it in their refrigerator and then don’t eat it. It goes bad and they waste it. It does happen,” said Mitcham. “Our goal is to try to make the product as hearty as possible while retaining really good flavor so it can last in your refrigerator as long as possible but also so people want to eat it, so hopefully it doesn’t sit in there and degrade.”

In reducing postharvest losses, Mitcham commented on the dissonance between addressing postharvest flavor and consumer satisfaction, “In some ways they are two opposite ends of the spectrum; some of the things we do to reduce losses are counter to delivering good flavor to consumers,” she said. “We really need to do both, and that was a big part of our message this week.”

Also at the event, the California Leafy Green Marketing Agreement (LGMA) discussed food safety principles, and Trevor Suslow, a UC Davis Plant Pathologist with the Postharvest Technology Center, discussed good agricultural practices (GAP) for food safety.

California Ag Today2021-05-12T11:05:54-07:00June 24th, 2016|

New IPM Work on Brown Stink Bug

New IPM Approach to Brown Stink Bug In Desert Cotton

By Patrick Cavanaugh, Farm News Director

This year, the UC Division of Agriculture and Natural Resources, Cooperative Extension, Riverside County began an Integrated Pest Management (IPM) program to control Euschistus servus, or brown stink bug, a problem in Southern California’s cotton production areas.

Vonny Barlow, a UC Cooperative Extension farm advisor in Riverside County

Vonny Barlow, a UC Cooperative Extension farm advisor in Riverside County began evaluating brown stink bug in cotton last year, and he received additional funding this year from a National Institute of Food and Agriculture (NIFA) grant administered through North Carolina State University, to continue his research this year. Barlow just hired two interns to work with brown stink bug in the Palo Verde Valley in Southern California.

The pest was known to exist in Arizona for about eleven years, but was not a critical issue until about three years ago, when it moved into California. California cotton growers had to spend a lot of money to spray to manage the insect, and it just wasn’t economically feasible.

“In many areas in the south, the brown stink bug pierces into the cotton boll with its proboscis-like mouthpart—a stiff, short straw,” said Barlow. “Once the cotton boll is pierced, the brown stink bug tries to feed on the cotton seed. The problem is the puncture allows bacteria to enter and boll rot to set in. Boll rot is the issue because it lowers yield quality; without boll rot, the brown stink bug is much more of a manageable pest.”

Spraying is not the answer to control the bug, according to Barlow. “We are going to look at an area-wide pest management approach by just essentially surveying the pest control advisers (PCAs) and growers about cropping that is near or even some miles away from cotton,” he said. “Where is the brown stink bug showing up? When did it show up? Is it moving? When are you going to harvest? Is it moving into the cotton? That way, we can give the cotton growers a better idea of when they should start management practices for brown stink bug, instead of just routinely calendar-spraying every two weeks.”

“We hope to predict when brown stink bug will move into cotton. Farmers who just harvested wheat should expect it will come into your field within the week. Start scouting; it is another very good IPM tactic to reduce sprays and to better manage pests,” said Barlow.

Featured image: Brown Stink Bug (Source: Brown Stink Bug (Source: “Chemical Efficacy Trial using Select Insecticides against Brown stink bug, Euschistus servus on Commercially Planted Cotton” by Vonny Barlow, University of California, Agricultural and Natural Resources, Riverside County, April 2016 issue of “Postings from the Palo Verde” newsletter)

California Ag Today2021-05-12T11:05:54-07:00June 23rd, 2016|

MRL Discussion Continues to Expand

MRL Transparency is Needed to Avoid Hurting Exports

by Emily McKay Johnson, Associate Editor

Gary Van Sickle, executive director of the California Specialty Crops Council (CSCC), and host of the annual Maximum Residue Level (MRL) Harmonization Workshop in San Francisco earlier this month, spoke about the increased MRL discussion that has taken place in the last decade. “We had the vision about 11 years ago to see there was a need to start talking about MRLs in a public forum,” he said.

With nearly 125 attendees at their workshops, CSCC “has anywhere from eight to ten international countries participating,” said Van Sickle. And as the organization has grown, Van Sickle and his team have found that MRL awareness is increasing. “One of the major focuses here is to bring into the sector an awareness of what is going on with MRLs. Through this workshop, that comes to light.” he said.

Gary Van Sickle, Executive Director of California Specialty Crops Council.

“Also very important,” Van Sickle said, “is the linkage between the different sectors represented here—the registrants, the agricultural industry, the government agencies and even the universities and academia.”

Van Sickle discussed how MRLS are convoluted in other countries. “There are disconnects between crop protection measures in one country versus another,” he began, “which can hurt exports for American farmers. When a crop protection company develops products for crops, the crops are tested for what could be a maximum residue level, say it is 0.5 parts per billion,” Van Sickle explained. “The trouble comes when an importing country puts the MRL at a different level, say .1 parts per billion. Suddenly, that limits the crop’s importing potential into that country.”

Van Sickle added, “Some [countries] have tolerances that are on the low side and under our usage levels here in the states, so they can apply the [standard] properly.” Problems occur when MRLs for an American crop export “does not make the residue level for the country that it is going into,” according to Van Sickle.

Another important discussion was implementing consistency in regulation over the years. “We are also in a situation where there’s a lag-time for getting MRLs registered,” he said. “As new products come out, they get registered here for growers to use. Sometimes there’s a lag-time of three to five years or more for another country to get [the same product] registered so that the American grower can use that new chemical, which could slow the export to a particular country, keep it diverted to another country that has MRLs, or keep it off an export situation altogether,” he concluded.

California Ag Today2021-05-12T11:05:55-07:00June 23rd, 2016|

Downey Mildew Continues to Challenge Leafy Greens

Downey Mildew Continues to Threaten Lettuce and Spinach

By Patrick Cavanaugh, Farm Director

One of the many facets that makes California Agriculture so successful is the hard-working group of farm advisors who assist growers with a multitude of plant and pest issues. Steve Koike, plant pathology farm advisor for UC Division of Agriculture and Natural Resources, Cooperative Extension in Monterey County, noted, “It has been a fairly typical year, and I wouldn’t say any particular new disease has been noteworthy, which is good for the growers.”

Steve Koike, farm advisor of UC ANR Cooperative Extension, Monterey County.

Koike, whose research focuses primarily on understanding disease systems, identifying new diseases and examining new methods of disease control, said growers “don’t like to see new diseases come out of our work. The main concern, downey mildew, continues to be challenging for both lettuce and spinach growers.”

“We started in the early spring with heavy mildew on both lettuce and spinach crops,” explained Koike, “and it’s remained pretty heavy on lettuce throughout the spring and early summer here. Spinach downey mildew goes up and down, which is not unusual.” he said. “We had some heavy mildew weeks for spinach growers, then we didn’t hear anything, then we heard that it had died down, and then ten days ago there was another surge. It’s one of those things that is hard to predict because it is variable.”

Since starting his farm advising position in 1989, Koike has been involved in educational programs and applied research in vegetable, fruit and ornamental crop diseases. Because downey mildew can overwinter in perennial crops, its continued occurrence is not too surprising.

“Earlier this year, Jim Correll, my cooperator at University of Arkansas, other leaders in the industry and I finally did confirm race 16, a new biotype of downey mildew. A few years ago, it was only race 12; it is moving target,” he noted.

“Although we have confirmed Race 16 on spinach, we are a little concerned because there are reports of disease on some race 16-resistant varieties.” Koike said.

Featured image: Downey Mildew (Source: UCANR Cooperative Extension, Tehama County)

California Ag Today2021-05-12T11:05:55-07:00June 22nd, 2016|

Food Waste Solutions Include the American Farmer (Part 2)

Biotechnology is Part of the Food Waste Solution

by Patrick Cavanaugh, Farm Director

Last week, California Ag Today published an article about the food waste in America discussion held at the 2016 Maximum Residue Level (MRL) Workshop in San Francisco. Jay Vroom, CEO of CropLife America, felt the farmer’s voice was largely absent from the topic of food waste. In the second part of this series, Vroom advocates for the use of bioscience to help eliminate food waste.

According to Vroom, the most vital occurrence of food waste is in production. Consumer food waste is very high, but Vroom believes bioscience is key to keeping the statistics low in all areas of production. “The opportunities for crop protection and biotechnology span a visual that would certainly overcome food waste yield potential with biotechnology,” he said.

In addition, Vroom stated that other genetic enhancements, crop protection tools, seed bed preparation, soil health, moisture management, modern plant nutrient, fertility programs and equipment advances all underscore why farmers need to be included in the food waste discussion. “Most especially,” Vroom said agriculture community can contribute, “the miracles of precision agriculture that are out there in the hands of farmers in almost every corner of the United States today and in almost every farming system.”

At the MRL Workshop, Vroom told the audience, “The farmer’s role and the farmer’s voice in all this is largely absent. We’re looking to help lead—with many of you and others who are willing to participate in a broad coalition—in getting the farmer’s voice in there.”

Jay Vroom, CEO of CropLife America

The farmer’s voice, equipment and biotechnology are imperative because, “modern genetic seed advancements and breeding also generate plant material that is healthier and results in longer storability,” said Vroom. If food were to have longer storability, it wouldn’t be as much of a consumer issue.”

Vroom’s affiliates, who have surveyed the food waste landscape and uncovered results that encourage farmers to speak up, concluded, “The farmer’s voice in the food waste conversation is an opportunity that we see as wide open.”

“I think a place for us to start would be to get the facts together,” Vroom stated, “such as, ‘How much more food would be wasted if the technologies the farmers used to produce those crops today weren’t available and you would have a lot less storability, shelf life, etcetera?’”

“We know that insects, disease, weed control, regulators, fumigants, direct and indirect food waste data is out there,” Vroom said. “We need to gather that up, work together, and assemble it by crop to tell that story about the crops that are directly consumed by consumers.”

Vroom discussed food waste mostly with regard to produce; however, animals and dairy are equally important in the conversation. “Certainly it gets a little more complicated with protein; but once again, better animal nutrition results in less food waste from meat, milk and eggs. Those are animal agriculture partnerships that we don’t often reach out to, yet another opportunity for us to be able to tell that indirect story as well,” he said.

Vroom contended there are many ways for farmers in every aspect of agriculture to “join forces, connect to the food waste and food safety debate, and to eliminate these critical issues, which certainly time to time is also front of mind for consumers and voters. And we’ve got a great story to tell,” he concluded.

California Ag Today2016-08-03T21:12:23-07:00June 21st, 2016|

Patience: How Homeowners Can Help ACP Detection

Authorities Need to Monitor ACP Detection, Confronted With Impatient Homeowners

by Patrick Cavanaugh, Farm Director

Joel Nelsen, President of California Citrus Mutual

Joel Nelsen, the president of the Exeter-based California Citrus Mutual noted that most homeowners do not realize how intensive it is for authorities to monitor traps for the Asian Citrus psyllid (ACP) at their homes.

“Most people don’t realize how intrusive this process is,” said Nelsen. “You’ve got a member of the County Ag Commissioner’s office driving down a street. He sees a citrus tree in a front yard, or he can see it’s tall enough in the back. He knocks on the door. The homeowner’s not home, so he has to come back.”

“Later, he comes back to the home and again, knocks on the door and finds that the homeowner is home. He says, ‘Can I put a trap out here to find out if you’ve got the Asian citrus psyllid?’ The homeowner hopefully says, ‘Yes.’ He comes back in two weeks. He looks at the trap. There’s no ACP. He comes back two weeks later, and if the homeowner is home, he looks at the trap,” Nelsen explained.

“It’s a constant bother to that homeowner,” Nelsen said. “Eventually, they find more than one ACP. Then the inspector says: ‘Can I spray a crop protection material on your tree and kill the Asian citrus psyllid?’”

“Hopefully the homeowner says, ‘Yes,’” said Nelsen.

Nelsen noted that the inspector visited five times already within a two month period, and now he needs to do inspect elsewhere, so having that homeowner be amenable to that much intrusiveness is a significant goal.

Nelsen noted, “The consumer education program that forms the partnership between us and them, from our perspective, is vitally important so the consumers understand what Huanglongbing (HLB)—the fatal citrus disease carried by ACP—is”.

“Then when you find Huanglongbing (HLB),” said Nelsen, “and hopefully it’s very minimal, that homeowner is more likely to agree that the tree must be removed. Fortunately, everybody has said: ‘Yes.’”

California Ag Today2021-05-12T11:03:01-07:00June 17th, 2016|