Crop Protection

CCM Statement on Chlorpyrifos Ban

Flawed Data Forcing Cancellation

News Release From California Citrus Mutual

Recently, the California Environmental Protection Agency (CalEPA) and the California Department of Pesticide Regulation (DPR) announced that they are going to begin the cancellation process of chlorpyrifos. The statement cites scientific findings that chlorpyrifos poses serious public health and environmental risks to vulnerable communities.SaveOurCitrus Logo

“The decision to ban chlorpyrifos is not surprising given the significant pressure from anti-pesticide groups, active legislative proposals, regulatory proceedings, and ongoing court battles,” said CCM President Casey Creamer. “However, this decision relies heavily on an evaluation that was significantly flawed and based upon unrealistic modeling scenarios that are not verifiable by actual results in DPR’s own air monitoring network.”

“California Citrus Mutual and our member growers stand by science that is sound, that properly evaluates risks and puts forward appropriate safeguards to protect ourselves, our employees, and our surrounding communities. We are committed to safe and effective use of chlorpyrifos and other crop protection tools.”

“The process for which this chemical was evaluated was purposely exaggerated to achieve the desired outcome and jeopardizes the scientific credibility of the Department of Pesticide Regulation. This decision sets a terrible precedent for future evaluations and creates a chilling effect on companies planning on making significant investments to bring new products to the market in California.”

“The citrus industry is fighting feverishly to protect itself from the deadly citrus disease, Huanglongbing,” Creamer continued. “In order to do so, we must have the necessary tools in the toolbox for an effective Integrated Pest Management program.”

“The once mighty citrus-producing state of Florida has lost 70% of its production due to this disease, which is expanding exponentially in residential citrus trees in Southern California at this very moment. While our commercial growers will remain vigilant, it is vital that our policymakers recognize the seriousness of the threat and ensure sound scientific procedures are followed.”

“California Citrus Mutual will continue to be actively engaged in the regulatory processes around the cancellation decision and will continue to explore all potential remedies to allow the safe and effective use of chlorpyrifos.”

2021-05-12T11:05:03-07:00May 14th, 2019|

Biological Products Finding More Demand

Biological Products Industry Alliance Growing Rapidly

By Patrick Cavanaugh, Editor

The Biological Products Industry Alliance (BPIA) was started 16 years ago for only five biopesticide member companies. Now there are 129 member companies and membership ranges from manufacturers of biopesticides and biostimulants to service providers, marketers, distributors, and anybody who touches this industry.

Keith Jones is executive director of the BPIA. He said during a recent meeting in Rochester, NY, that the alliance is growing.

“The running theme for the event was the growth of our association, the growth of the industry, and much of that is driven by consumer demand, regulatory pressures, and just a real move towards a sustainable future in agriculture and other markets where biological products are used,” Jones explained.

Biological products got their start in commercial agriculture, such as fruits and vegetables but have grown in demand by other markets like golf courses and ornamental operations. Among the earliest biologicals used in production agriculture are B.t. products.

“For a variety of reasons, some traditional chemistries are losing efficacy because of pests developing resistance,” Jones said. “Biologicals can be helpful with that. They don’t replace traditional chemistries, but they can actually extend the life of traditional chemistries.”

Biologicals are all part of integrated pest management and can be used during different parts of the production season, where conventional products are not labeled for use.

Biologicals can be used at the onset of a growing season and when getting close to harvest, because there are less or no pre-harvest intervals.

“What’s great about biologicals is that most of them have multiple modes of action, so it’s very hard for the pests to become resistant to that,” said Jones, adding that, “There are many benefits of biologicals, and their acceptance is growing rapidly.”

Jones said that biological products don’t replace traditional chemistries, but they can actually extend the life of traditional chemistries.

2021-05-12T11:01:48-07:00May 9th, 2019|

Reducing ACP Spread In California

Beth Grafton-Cardwell: Spread of Disease Must Be Prevented

By Patrick Cavanaugh, Editor

Collaborative changes are being made to combat the Asian Citrus Psyllid (ACP). Beth Grafton-Cardwell is the director of Lindcove Research and Extension Center near Exeter, as well as a research entomologist with UC Riverside. She recently spoke at the 2019 Citrus Showcase in Visalia as a key speaker on the state of Huanglongbing (HLB) in California, with an overview of how to prevent ACP,—which vectors HLB, a fatal disease to citrus—from moving around the state.

We were trying to communicate why we’ve made the changes we’ve made for the industry that has been a collaborative effort between CDFA, growers, and the university, Grafton-Cardwell said. “We need better ways to prevent psyllids from moving around the state because they might have HLB in their bodies, and we’ve got to prevent the spread of the disease.

beth_grafton-cardwell

Beth Grafton-Cardwell

The Florida citrus industry did not do a great job in containing the Psyllid, and now HLB is rampant in the state’s citrus industry, which has devastated the citrus economy there.

“Florida found that they did not do much to control psyllid movement, and they found that psyllids were moving in bulk citrus bins and retail nursery plants around the state, and within a concise amount of time, they spread the Psyllid and the disease everywhere,” Grafton-Cardwell said. “We’re trying to avoid that. We have 100% tarping of citrus truckloads. We have treatments that have to be done if growers want to move citrus between major zones in California, so that we can prevent that kind of movement.”

Conversations continue about quarantine areas in California to reduce spread.

“There’s been a lot of discussion regarding quarantines because it’s painful for some growers who have low Psyllid numbers to have to treat and to move their fruit to other zones.”

“There’s been a lot of questions. We did a lot of scientific analysis to look at impacts as well as numbers. It’s not just about psyllid numbers; it’s about their impact if growers were to move the disease into a high citrus growing region,” Grafton-Cardwell explained.

2021-05-12T11:01:48-07:00May 8th, 2019|

Alliance For Food and Farming Launches New Website!

New Safefruitsandveggies.com Website Will Improve Visitor Experience

News Release

The Alliance for Food and Farming (AFF) has launched an updated safefruitsandveggies.com website with new content and to improve visitors’ experiences on the increasingly popular site.

“The safefruitsandveggies.com website now receives tens of thousands of visitors each year,” said Teresa Thorne, AFF Executive Director.  “We want to continue to improve the site, retain our visitors, and attract new users.  The newly formatted site will help us to do that.”

New sections include “A Dozen Reasons to Eat Fruits and Veggies,” and “Five Facts About Produce,” which are based upon popular blog posts.  These sections provide quick and easily-retained information about the benefits of eating fruits and veggies as well as the safety of organic and conventional produce.

The Safety Standards section of the website, which provides comprehensive information about the stringent regulations governing the approval and use of organic and conventional pesticides, has also been updated.

“This has become among the most visited sections of safefruitsandveggies.com because all the pesticide regulation information from various government agencies can be found in one place,” Thorne said.  “Instead of going through multiple searches and websites to learn more about these regulations, people can just come to safefruitsandveggies.com.”

Still to come are web pages specifically designed for nutritionists and dietitians to help them answer produce safety questions from consumers, their customers, and clients.

“This new web page was actually requested by dietitians, and we are excited to have their input as we build the content,” Thorne said.

“Since research shows consumers find dietitians and nutritionists are among the most credible sources when it comes to pesticide residues and produce safety, it is important they have readily usable information,” Thorne added.

Among the most visited website section continues to be the residue calculator, which shows consumers they could literally eat hundreds to thousands of servings of a fruit or veggie in a day and still not have any health effects from residues.

“All of the website content is either based upon peer reviewed research or on analyses by experts in the areas of toxicology, risk analysis, nutrition and farming,” Thorne said.  “Consumers can also view 40 videos featuring farmers and scientists, as well as information about peer reviewed studies.”

The AFF works to provide credible, science-based information so consumers can make the right shopping choices for themselves and their families.

“The safefruitsandveggies.com website is the cornerstone of our efforts,” Thorne said. “By providing facts about produce safety and countering misinformation, we hope to remove fear as a barrier and encourage increased consumption of all forms of produce.”

2021-05-12T11:05:04-07:00April 24th, 2019|

Protecting Melons From Silver Leaf Whitefly

Avoid Planting Near Earlier Planted Crops

By Patrick Cavanaugh, Editor

Silver leaf whitefly can be a severe yield-robbing pest in melons, but there are ways to prevent the damage, according to Tom Turini, a UCANR Vegetable Crops Adviser in Fresno County.

“A tactic is going to depend upon planting. If you’re able to put the crop into an area where you’re not next to earlier planted melons or cotton or known sources of whitefly, your likelihood of experiencing damaging whitefly levels is going to be lower,” Turini said. “Growers can’t always do that, but that’s part of the approach when you can. You’ll limit your risk.”

Tom Turini, UCANR Farm Advisor, Fresno County

Turini said the pest could mainly be a problem when you’re putting in those late melon fields when whitefly populations are higher.

“Whiteflies are not good fliers, so when you put those fields in areas where you don’t have sources of whitefly nearby then you will have less pressure for sure,” Turini said.

“Then there are some insecticide programs that you can look at, particularly when you know you’re going to have pressure,” Turini explained. “If you’re coming into high temperatures, and you’ve got late-planted melons, you may want to start with soil-applied insecticides, through the drip. It could be Admire; also Sivanto is a newer material that that has registration and has shown efficacy in desert production areas, which have much higher pressures and more consistent pressures than we do in the San Joaquin Valley.”

2021-05-12T11:01:49-07:00April 23rd, 2019|

Charlie Arnot: A Better Way to Talk To Consumers About Ag

Listening to Customers Concerns Will Help With Skepticism

By Patrick Cavanaugh, Editor

There are biases against large-scale businesses, according to Charlie Arnot, CEO of The Center For Food Integrity. He said that listening to customers concerns will help with the skepticism.

“The fundamental bias we see against size and scale is a belief that the larger companies, the larger entities, will put profit ahead of public interest. We know that’s not true,” Arnot said. “Those of us who work in agriculture … know that the people—the men, and women who work in agriculture—are terrific. They’ve got values that resonate. They’re committed to doing what’s right. But because of the size, the scale of agriculture today, it raises greater questions.”

Charlie Arnot, CEO of The Center For Food Integrity

Arnot explained that this means that the ag industry needs to embrace that consumer skepticism and be willing to address those questions and not be defensive.

“We want to help people understand that yes, the size and scale has changed, but our commitment to do what’s right has never been stronger.

Consider the adage, “it’s better to make a friend than win an argument.”

“And when you get into that conversation, do you want to win an argument or do you want to win a friend?” Arnot asked. “You know, what’s important to you? And frequently if we listen hard enough, we can hear people’s values. We can listen to what they’re talking about and find that place of connection.”

“So when someone says, you know, ‘it makes me uncomfortable to see all the pesticides and the spraying on all the produce in California. I don’t think it’s safe.’ We can either defend pesticides and applications of crop protection chemicals, or we can listen to say, okay, well [what] I heard them say is they care about safe food.”

“Terrific. I care about safe food. Let’s have a conversation about our commitment to safe food as opposed to a conversation about trying to defend pesticides or crop protection chemicals,” Arnot explained.

He said that consumers have many needs when they’re making decisions about food. “Historically, we’ve thought about their rational needs. We’re going to give them information, but they also have social and emotional needs that they’re trying to meet as well.”

“They want to feel good. They want to have that emotional reinforcement [that] they’ve made the right decision for their families. They want to have confidence and feel good [that] they’ve decided to buy food that’s going to be safe and nutritious,” Arnot said. “They want to get that social reinforcement when they bring it out of the bag, when they talk to their friends, when they post a picture on Instagram or Facebook about what they’re doing. They want people to reinforce [that] they made the right choice about what they purchased.”

For more information on the Center For Food Integrity: http://www.foodintegrity.org/

 

 

 

 

2019-04-19T15:47:57-07:00April 19th, 2019|

Lettuce Aphids Showing Up on Late Produce

Lettuce Aphid Pressure Has Been Steady

By John Palumbo, University of Arizona Professor/Extension Specialist, Department of Entomology

This season has been a banner year for aphids in the desert.  Aphid pressure has been steady on most crops throughout the spring.  Consistent with the warm weather we have been experiencing lately, Lettuce aphids, Nasonovia ribisnigri, (aka., Red aphid) have shown up in desert lettuce again.

The last time lettuce aphid was this abundant on desert produce was the spring of 2012.  However, in the past couple of weeks, I’ve identified lettuce aphid appearing on both head lettuce and romaine in Roll and Wellton. I’ve also had reports of the aphid showing up in the Imperial Valley.

At the Yuma Ag Center, we began seeing lettuce aphid a couple of weeks ago on untreated lettuce, and they have recently built up to high numbers. Previous experience has taught us that daytime high temperatures in the 80’s are ideal for population growth.  A few things to remember about lettuce aphids relative to the other aphids we commonly see.

First, the immature nymphs are small and have a red appearance, whereas the apterous adults are typically a large brown colored aphid with dark bands running across the abdomen.  Second, among the crops we grow locally, lettuce aphids are only found on the lettuce types(Lactuca spp.)

Lettuce aphids prefer to colonize the terminal growth, and can often be found in heads or hearts, whereas green peach aphids are often found on the frame leaves in high numbers before moving into the heads. Sampling should be focused on the terminal growth of young plants and in the heads and hearts of older plants. Third, they can reproduce prolifically, producing many more winged alates than other species, which can quickly lead to widespread abundance throughout a field or a growing area.  Finally, as the saying goes “he who hesitates is lost”.

If lettuce aphids are found on your lettuce, it is recommended that you respond quickly with an insecticide treatment. The product of choice is Movento at 5 oz/ac. Because of its systemic activity, Movento will reach aphids in the protected terminal growth.

Be sure to include a penetrating adjuvant for best results at a rate of at least 0.25% v/v. It normally requires 7-10 days of activity before a significant reduction in the infestation is observed. For more information on lettuce aphid please refer to Lettuce Aphid on Late Season Produce.   If you’re finding lettuce aphid on organic lettuce, you’re out of luck; none of the registered biopesticides will control this aphid.

2021-05-12T11:01:49-07:00April 9th, 2019|

Quarantines in Place to Prevent ACP Spread

Quarantines Painful For Some Growers

By Mikenzi Meyers, Associate Editor

It’s been a tough road for citrus growers since the discovery of the Asian Citrus Psyllid (ACP) back in 2012. Those affected have been forced to quarantine their crops, a task that Beth Grafton-Cardwell, director of Lindcove Research Extension Center in Tulare and research entomologist with UC Riverdale, said can be difficult.

“There’s been a lot of discussion about the quarantines because they’ve been painful for some growers who have low psyllid numbers to have to treat them and move their fruit to other zones,” Cardwell explained.

Beth Grafton-Cardwell

The growing concerns have led to continuous research regarding whether or not the zones should be changed.

There have been more than 1,100 citrus trees that have tested positive for HLB. There have been more than 230 positive finds of the psyllid, and although this sounds like a big number, Cardwell said its actually normal due to how difficult the disease is to detect.

“We can’t tell that the tree is infected early on because a localized infection might be on one stem of the entire tree, and it might take a year before it moves throughout the tree,” she said.

Right now, quadrant sampling is being done, where four quadrants of the tree are sampled for the disease. Current samples are showing that one in four quadrants are coming back positive.

“It’s finding the trees that are infected that’s really difficult, and meanwhile, the psyllid is spreading, spreading, spreading the disease,” Cardwell said.

 

More information can be found at this link:

https://maps.cdfa.ca.gov/WeeklyACPMaps/HLBWeb/HLB_Treatments.pdf

2021-05-12T11:01:49-07:00April 5th, 2019|

Americans Need to Eat More Fruits and Vegetables

After Nearly 25 Years, It’s time to Advocate for Consumption

News Release From SafeFruitsAndVeggies.com

There is so much good stuff to say about organic and conventional produce, from studies which clearly show the safety of both to decades of research that illustrate the disease-prevention aspects of these nutrient-dense foods.  Plus, farms and farming companies continue to develop innovative, convenient fruits and vegetables, which are helping to increase consumption.

But while we are making some headway, only one in 10 Americans eat enough produce according to the Centers for Disease Control.  Why?  Because barriers to consumption still exist. One of those barriers is safety fears generated by certain groups who inaccurately disparage the more affordable and accessible forms of produce.

Among the longest and biggest offenders comes from an activist group that annually releases its so-called “dirty dozen” list.  Since 1995, this group’s fear-based ‘marketing against’ tactic disparaging the most popular produce items has been used in an attempt to promote purchasing of organic products.

Look, we completely understand advocating for your members when the information is credible and the science is strong.  The AFF advocates on behalf of organic and conventional farmers of fruits and vegetables and the safety of their products every day.  But when you raise unfounded fears based upon unsupportable science about the only food group health experts universally agree we should eat more of, it is time to revisit your approach.  Especially when peer reviewed research is showing this tactic may result in low income consumers stating they are less likely to purchase any produce—organic or conventional—after learning about the “dirty dozen” list.

Put another way, according to these research findings, this activist group may actually be marketing against their own constituents’ organic products by releasing this list.

To summarize, the “dirty dozen” list is scientifically unsupportable, it may negatively impact consumers’ purchasing decisions, and it’s possibly even detrimental to the very products the list authors are trying to promote.   After almost 25 years, it is time to retire this tactic in favor of more creative “marketing for” strategies that encourage consumption and doesn’t scare consumers.

2021-05-12T11:05:04-07:00April 3rd, 2019|

New Series of Nitrogen Management Advice Available

UC ANR Publishes Nitrogen Management Advice for Fruit, Nuts, and Other Crops

By Pam Kan-Rice UC Agriculture & Natural Resources

California growers can download a new series of publications summarizing efficient nitrogen management practices from UC Agriculture and Natural Resources. The publications are designed to assist growers in complying with state regulations for tracking and reporting nitrogen fertilizer applied to crops, in an effort to prevent nitrogen from leaching into groundwater.

The science-based publications are associated with a series of trainings for growers and Certified Crop Advisers to develop efficient nitrogen management practices, an effort coordinated by UC ANR’s California Institute for Water Resources.

“Our role is to provide farmers, agricultural consultants and policymakers the best science possible for making decisions on managing and protecting California groundwater,” said Doug Parker, director of the water institute.

The free publications—created from training materials, lessons learned from the training sessions and from additional UC research—can be downloaded at http://ucanr.edu/nmgmtpublications.

The following publications are now available for download:

·         Principles of Nitrogen Cycling and Management

·         Irrigation and Nitrogen Management

·         Nitrogen Management for Nut Crops

·         Nitrogen Management for Deciduous Fruit and Grapes

·         Nitrogen Management for Citrus and Avocado

·         Nitrogen Management for Cool-Season Vegetables

·         Nitrogen Management for Strawberry Production

·         Nitrogen Management for Processing Tomato

·         Nitrogen Management for Corn on California Dairies

The publications were authored by Parker of California Institute for Water Resources; Patrick Brown, professor in the UC Davis Department of Plant Sciences; Allan Fulton, UC Cooperative Extension advisor, Tehama County; Tim Hartz, UC Cooperative Extension specialist emeritus, UC Davis Department of Plant Sciences; Dan Munk, UC Cooperative Extension advisor, Fresno County; Daniel Geisseler, UC Cooperative Extension specialist, UC Davis Department of Land, Air & Water Resources; Michael Cahn, UC Cooperative Extension advisor, Monterey, Santa Cruz and San Benito counties; Richard Smith, UC Cooperative Extension advisor, Monterey, Santa Cruz and San Benito counties; Marsha Campbell, UC Cooperative Extension advisor emeritus, Stanislaus County; Sat Darshan Khalsa, UC Davis project scientist; and Saiful Muhammad, UC Davis graduate student.

Developed in 2014, the training program has been offered at 11 different locations around the state, most recently in Fresno. More than 1,000 Certified Crop Advisers have taken the training.

“Based on course evaluations, the percentage of participants with good-to-complete understanding of nitrogen management increased after the training,” Parker said. “In addition, the participants found the presenters very knowledgeable and informative. Most importantly, the majority of participants felt they were better prepared to address nitrogen mitigation regulatory requirements after the training.”

The nitrogen management training curriculum was developed by a group of UC ANR faculty, specialists and advisors. The first day focuses on the nitrogen cycle in crop production systems, nitrogen sources, irrigation and nitrogen management, and nitrogen budgeting. The second morning covers annual and permanent crops and nitrogen planning practices.

For more information on the nitrogen management training materials, visit http://ciwr.ucanr.edu/NitrogenManagement.

The Nitrogen Management Training and Certification Program is a joint effort between the California Department of Food and Agriculture, UC Agriculture and Natural Resources, California Association of Pest Control Advisers’ Certified Crop Adviser Program and the Regional Water Boards.

University of California 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.

2021-05-12T11:05:04-07:00March 28th, 2019|
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