Dirty Dozen…Really?

Dirty Dozen Does Disservice

 

Following the April 12, 2016 release of the Environmental Working Group’s (EWG) annual Dirty Dozen list, Teresa Thorne, a spokesperson with the Watsonville-based Alliance For Food and Farming, a non-profit organization which exists to deliver credible information to consumers about the safety of fruits and vegetables, conversed with California Ag Today’s Patrick Cavanaugh, farm news director and deputy editor,

California Ag Today: Let’s talk a little about the Dirty Dozen list that the EWG just published for 2016.

Thorne: They’ve been doing this for 20 years now, and it is concerning to us because they’re putting out misinformation about the safety of conventionally grown produce. We know that the products on this list are among the most popular among families, especially children. EWG targets them, and their efforts really scare moms and consumers away from conventionally grown. It makes no sense to us; I mean, both organic and conventionally grown are very safe. We should all be consuming more every day for better health. That’s really the message for consumers. This list—all it does is serve to confuse people.

California Ag Today: It’s all a big scare tactic to try to get everybody to think that only organic food is safe, right?

Thorne: We strongly believe that organic food is very safe, but we maintain the same for conventional. And it’s interesting also too, because in a recent study that really focused on Manhattan, the researchers found—and we did blog about this—that organic was not as available as they had previously thought. So, what happens to the mom who wants to buy strawberries for her child’s lunch, but only conventional strawberries are available? Now she’s scared because of what EWG has stated in really inflammatory language this year—over the top. Now what is she supposed to do? Her store doesn’t carry organic strawberries. Availability is very much an issue, as well accessibility and affordability. Conventionally grown still is the most accessible and affordable [produce]. So, to scare people away from that really does a disservice to consumers.

California Ag Today: Yes, and food safety experts from the USDA and California Department of Pesticide Regulation (DPR), a department of the California Environmental Protection Agency (EPA), agree that any small risk from the trace [below legal thresholds set by the EPA] levels of pesticides found in fresh produce should not keep you from the health benefits of a diet rich in fruits and vegetables. DPR tracks food for pesticide residues, and they find 99 percent of all the fruits and vegetables grown in California—whether they’re organic or conventional—are safe to eat and we should be eating more of them.

Thorne: Absolutely, and that’s what’s also interesting; EWG—and we’ve called them on this in the past and they still have not changed—does not link, in their report, directly to USDA studies. They state over and over that they base their results on this USDA Agricultural Marketing pesticide data program (USDA PDP), but they don’t link to it. In what world do you not link to a study that, you basically state, you base your entire Dirty Dozen list upon? We find that quite odd.

We think the reason they don’t link is this simple: People will see that the USDA clearly states that residues do not pose a food safety concern. And that is in direct contrast to what [the EWG is] saying.

California Ag Today: Of course, if we wash the fruits and vegetables we eat, it helps. We should always wash produce to get the dirt off and talk about food safety in our own kitchens.

SafeFruitsandVeggies logoThorne: That’s right. Conventional and organic alike, wash them before you eat them. It’s a healthful habit that everybody should follow for various reasons. And the U.S. Food and Drug Administration (FDA) clearly states that you can reduce or eliminate any residues that may be present on fruits and vegetables, simply by washing.

California Ag Today: One last question, Teresa. You’ve been terrific. The EWG has been losing some strength in their message over the years because the media is getting sharper and better at challenging the contradictions in their reports. We’ve got the Alliance for Food and Farming’s new SafeFruitsAndVeggies website now, and you guys are reaching out to the media, saying “Let’s be reasonable; let’s look at this from a scientific point of view, not an emotional point of view.” Do you want to comment on that? While they’re not being picked up as much anymore, they keep trying, now with strawberries at the top of the list, right?Strawberries1

Thorne: Yes, we think they’re using the tactic of putting another kid-popular fruit to re-spark interest. In fact, we predicted it in a blog a few weeks ago, in which we said interest from the media is declining because more reporters and bloggers are actually reading the USDA PDP report, seeing what it says. So, we actually predicted in our blog that they would do something like this. Our number one prediction was they would have a new number one on their list, and it would, of course, be a kid-popular fruit.

So, it will be interesting to see. We’re still early on in the process to see if they have had any success with that, but we believe that that was a tactic [EWG] tried to employ to revive very lagging media coverage on this list. They used to enjoy widespread media coverage back in the day.

__________________________

Resources:

Setting Tolerances for Pesticide Residues in FoodsUnited States EPA

Pesticide info: What You Should Know About Pesticides, “Pesticides and Food: How We Test for Safety,” California Department of Pesticide Regulation

The Pesticide Data Program: Helping Monitor the Safety of America’s Food SupplyUSDA Agricultural Marketing Service (AMS)

Pesticide Residue Calculator, Alliance for Food and Farming

2021-05-12T11:03:02-07:00April 14th, 2016|

UC’s Karen Klonsky Retires

Karen Klonsky Retires, Gets Major Credit for CA Agricultural Cost and Return Studies

By Patrick Cavanaugh, Deputy Editor and Laurie Greene, Editor

 

This is an exclusive interview with Karen Klonsky, UC Davis Cooperative Extension specialist emeritus, in the UC Davis Department of Agricultural and Resource Economics. Her expertise has been farm management and production, sustainable agriculture and organic agriculture.

CAT: Congratulations on your recent retirement!UCANR 100 years logo

Klonsky: Thanks Patrick. I retired on July 1, 2015, after 34 years. I started at UC Davis in ’81, straight from graduate school.

CAT: What has been your primary research interest?

Klonsky: My primary research areas are sustainable and organic agriculture. I have approached these subjects from several dimensions, including the economic feasibility of alternative farming practices, the size and growth of organic production in California, and factors influencing the adoption of alternative farming systems.

CAT: Wow, what a great career! I understand your interest in alternative farming systems began with your dissertation work comparing alfalfa systems with integrated pest management.

Klonsky: I studied agricultural economics in graduate school and started working with a professor in my department who had a joint appointment in agricultural economics and entomology. And I just became very interested in that research area.

I worked with entomologists and researchers on a computer model of plants and alfalfa weevils, and their interaction, plus a management component. I studied the plant and bug components, then did the management part and imposed it on top and asked, ‘If you did this, how many bugs would die?’ The plant model showed how much the alfalfa would grow, and at what point you could cut the alfalfa and achieve the desired yield. I never actually did any fieldwork.”

CAT: Since 1983, you not only directed ongoing Cost and Return Studies, but the development of an entire archived library of Cost and Return Studies for the UC Davis Department of Agricultural and Resource Economics. You recently completed studies on pistachios and walnuts, right?

Klonsky: Yes, both “Sample Costs to Establish and Produce English Walnuts In the Sacramento Valley, Micro sprinkler irrigated” and “Sample Costs to Establish and Produce Pistachios In the San Joaquin Valley-South, Low-Volume Irrigation.”

Our library contains studies about field, tree and vine crops and animal commodities. But since I retired, Dan Sumner, director, University of California Agricultural Issues Center and Frank H. Buck, Jr. Distinguished Professor for the Department of Agricultural and Resource Economics has taken that over and I continue to be peripherally involved.

CAT: These cost studies have been recognized worldwide.ARE Cost and Return Studies

Klonsky: Yes, and it has been very gratifying work. We decided to put them online routinely, and we have had a million downloads per year. Around 2005, Pete Livingston, my staff research associate, got the idea of scanning in the older studies. All of the newer studies were in electronic file format, so posting was easy. However, most of the older studies were paper copies, so we got a grant to scan and add them to our new online archive.

CAT: What was the most interesting thing about doing those cost studies?

Klonsky: I loved doing those studies. I really learned a lot because all cost studies are done directly with farmers we met through county farm advisors. I really got to know what farmers were thinking about and what their options were.

CAT: So those were real costs, not university costs?

Klonsky: Those were not university costs. The farmers tell us what equipment they will use, and then we calculate the cost of using their equipment—the fuel used to operate the equipment and the repair costs—with an agriculture-engineering program.

CAT: Do you have a math background?

Klonsky: Yes, I got my bachelor’s at the University of Michigan in mathematics. It was very helpful.

CAT: And you also earned your Ph.D. at the University of Michigan?

Klonsky: Yes.

CAT: So did you grow up in Michigan?

Klonsky: No, I grew up in New York.

CAT: And you just had an interest in going to Michigan State University?

Klonsky: Well, I had an interest in agriculture because I had an uncle who farmed corn and vegetables in upstate New York. We would go up there and I thought it was the most wonderful thing in the world.

CAT: What were some of the highlights of your career?

Klonsky: For many, many years, I was involved in the long-term on-campus sustainable agriculture research on land that is now on Russell Ranch, but it started as Sustainable Ag Farming Systems. We looked at four different farming systems, organic, low input, high-input, and we did a lot of analyses with cover crops and rotations. It was great to work on that project.

CAT: And you worked with USDA on the trends of organic farms?

Klonsky: And then I worked quite a bit with Department of Food and Agriculture on using the registration data for their organic farmers to compile statistics about how many farmers they had, what they grew, and the number of acres they planted with each crop. They had this database, which started in 1992 I believe, but they weren’t using it. Now the most recent registration analysis is available for 2012.

CAT: Just to try to get more data on the organic movement and organic growth?

Klonsky: Yes, because there was no data at all about it. Now NASS (National Agriculture Statistics Service) conducts a nationwide Organic Census, in addition to the regular Census of Agriculture.

CAT: I understand you served as an editor of the Journal of American Society of Farm Managers and Rural Appraisers (ASFMRA). What did that entail?ASFMRA

Klonsky: Yes. I did that for many years. ASFMRA is a national organization. The Journal of the ASFMRA comes out annually. As editor, I corresponded with the authors, assigned reviewers, and ultimately, accepted or rejected submissions, like any journal.

CAT: Did you travel a lot with your work and presentations?

Klonsky: You know, not so much, I went to Spain one time and France once for work. But I did travel around domestically to symposiums and conferences to speak on the economics of growing a lot of different crops, including many presentations at the EcoFarm Conference.

CAT: You worked and collaborated with some really interesting people.

Klonsky: Most of my important collaborations were conducting trials with people in other disciplines. For instance, at Russell Ranch, I was the only economist involved in the collaboration with plant pathologists and pomologists who ran trials to discover fumigation alternatives in the preplanting of trees.

Then I worked with people at UC Santa Cruz on alternatives for strawberry fumigation. Most of my work has been interdisciplinary.

CAT: California farming in general is huge, diverse industry. We produce 60% of the fruits and vegetables, and nearly 100 percent of the nut crops that people across the country consume. Any comments on that and on how valiant and resilient farmers are to get through year after year, particularly lately with the drought and the lack of water deliveries?

Klonsky: When I first started, there was a land price bubble, and there were a lot of bankruptcies because people had these land payments they just couldn’t pay.

It was kind of like the mortgage crisis that housing saw in 2008, agriculture saw in the early 80s.

CAT: So as you have been editor for the Journal of the American Society of Farm Managers and Rural Appraisers, you see land values going up and that keeps agriculture strong—the high land values, right?

Klonsky: Well, but it keeps it expensive. So now there is more and more leasing of land. As farmers retire from permanent crops, they have an orchard, but they don’t really want to sell it, so they lease it.

CAT: There you go. Keep it somehow in the family.

Klonsky: Yes, they try to keep ownership in the family. Or what we see also are these development leases where a young farmer can’t afford to buy the land, so they lease the land, but they pay for the trees to be planted.

CAT: So you are still coming to your office at UC Davis?

Klonsky: I am officially retired, but we have what we call a ‘partial recall’ where you can do things if you have funding. I have a project along with Rachel Goodhue, Professor, UC Davis Department of Agricultural and Resource Economics, with the California Department of Food and Agriculture, funded through the California Department of Pesticide Regulation. The Department of Pesticide Regulations is required by law to do an economic analysis of all proposed new regulations. So that is what I am working on.

CAT: Give me a couple of examples. VOC regulations?

Klonsky: Yeah, we do VOC.

CAT: Are you looking at sustainable groundwater legislation?

Klonsky: No, just pesticide regulation. It is funded by the Mill tax on pesticides.

CAT: Did you work with a lot of graduate students at UC Davis?UC Davis Graduate Studies

Klonsky: Oh yeah, I worked with a lot of graduate students coming through. One of them was on different ways of pesticide management on eucalyptus trees. I said I went to Spain. On that trip, I spoke about growing eucalyptus for firewood.

CAT: That was an economic study, wasn’t it?

Klonsky: Yes it was. They grow it not for firewood, but for paper. But that never really caught on here.

CAT: Are you bullish on agriculture? Do you think Ag is going to continue thriving in California?

Klonsky: Oh, sure. Oh, sure. But I think that the water situation is definitely real, and I think agriculture already has definitely made tremendous strides in irrigation systems, especially the subsurface irrigation in vegetables, in particular processing tomatoes, which I worked on.

CAT: That was a huge improvement in growing tomatoes. And people didn’t think it was going to work, but it turned out to be fantastic.

Klonsky: Yeah, a really win-win on that one. And orchards are getting more efficient. If you look at the water per pound of crop produced, you see major improvements with water efficiency.

CAT: Absolutely. Of course, most plants transpire most of the water they take up through the roots, up through the leaves and the stomata cells. By the way, do you have any interesting stories regarding your career?

Klonsky: It’s not the highlight, but the weirdest thing of my career is I got an email from somebody in Ministry of Agriculture and Fisheries from the United Arab Emirates. They wanted me to give a live presentation about Cooperative Extension in California and how it’s organized.

So I had to go to this office building in downtown Sacramento at 10:00 at night because of the time difference. I went into a conference room that had a special kind of projector so I could see them and they could see me. And on the monitor I see all these men walked in—they were all men—and half of them were in Western dress and half of them were wearing a Sheik-like headdress, with a band that sits on top and holds it on.

That was crazy, just being downtown after everybody is gone and the whole building was dark and quiet, except the one room that I was in.

CAT: How long was the presentation?

Klonsky: Gosh, maybe an hour.

CAT: You needed to do some research for that presentation?

Klonsky: Yeah, I had to do some research, I had to think about Cooperative Extension in a different way—the big picture. 

CAT: Keep up the good work, and I hope you are enjoying retirement.

Klonsky: Yeah, I come in two days a week, so it is nice to see everybody. I still get a lot of emails, which I need to answer.

2016-08-18T13:54:40-07:00January 26th, 2016|

Lygus Bug Control in Strawberries

Lygus Bug Control in Strawberries Can Prevent Significant Damage

By Patrick Cavanaugh, Deputy Editor

Adult Lygus Bug, Jack Kelly Clark, UC IPM

Adult lygus bug, Lygus hesperus.
(Photo by Jack Kelly Clark, UC IPM)

In the coastal areas of California where the majority of strawberries are grown, the top pest pressure comes from the lygus bugHillary Thomas, senior production research manager with Watsonville-based California Strawberry Commission, works on lygus bug control in strawberries, as it causes significant damage to the crop each season.

“We conservatively attribute between $150 and $250 million in damage each year to the lygus bug alone,” Thomas said. “We have only a few tools to handle this pest, including insecticide and vacuums, that can be used for the strawberry industry.”

Thomas explained vacuum use is widespread by both conventional and organic growers despite its drawbacks, beginning with the huge investment required by the grower. The vacuum is generally tractor-mounted with three or four vacuum fume hoods to one hydraulic system, and the entire vacuum system runs off the tractor’s PTO (power takeoff). The vacuum is so difficult to remove, it is typically installed on the tractor for the entire season.

Therefore, current research aims to make the vaccuum more useful, according to Thomas, by focusing on technological innovations to improve vacuum efficiency. She explained, “We are literally trying to suck up as many bugs as possible by moving the largest cubic volume of air and killing all the insects that move through the vacuum. We have created some standard operating procedures for vacuums as well as recommended short-term modifications to improve their efficiency by 25 percent. The Commission has also developed a series of trainings to disseminate information on the best management practices vacuums for growers.

2016-05-31T19:27:09-07:00September 28th, 2015|

Strawberry Meeting Focused on Fumigants, Pest Control

Fumigation Was Big Topic at Santa Maria Strawberry Meeting

 

New laws and regulations on fumigation for Santa Barbara and San Luis Obispo County strawberry growers were in place for the first time this season, and growers did a good job for the most part. This and other topics were discussed at the Wednesday’s annual Strawberry Production and Pest Management Meeting in Santa Maria.

According to Lottie Martin, Ag Biologist, Santa Barbara County Ag Commissioners office, for the most part, grower chose the right tarps for the right situation. “Growers must be careful to use a 60 percent tarp when capping a fumigation with the

Surendra Dara, crop advisor, UC Cooperative Extension, San Luis Obispo

Surendra Dara, crop advisor, UC Cooperative Extension, San Luis Obispo

1,3 D,” said Martin. “Growers should plan well in advance to make sure the tarp that is needed, is available.”

Martin said mandated buffer zones were noted and documented, however operators need to do a better job with required signage.

Surendra Dara, a Strawberry and Vegetable Crops Advisor, UC Cooperative Extension, San Luis Obispo, spoke about re-evaluating lygus bug IPM tools in strawberries with a focus on field vacs, monitory and economic thresholds. He spoke of an experiment with softer chemistry such as well as using B. bassiana, a soil fungus that acts as a parasite to lygus. “A combination of B. bassiana and azadirachtin.

Hillary Thomas, research manager, California Strawberry Commission

Hillary Thomas, research manager, California Strawberry Commission

Hillary Thomas, Research Manager with California Strawberry Commission in Watsonville also spoke about lygus. Her focus was third year bug vac research for lygus control.

Kirk Larson, pomologist and strawberry production specialist with the UC South Coast Research and Education Center, Irvine

Kirk Larson, pomologist and strawberry production specialist with the UC South Coast Research and Education Center, Irvine

Kirk Larson, Pomologist and Strawberry Production Specialist with the UC South coast Research and Education Center, Irvine spoke about advanced selections and non-chilling plug plants.

Mark Bolda, Strawberry and Caneberry Farm Advisor and County Director with UC Cooperative Extension, Santa Cruz County spoke about strawberry transplanting and the critical importance of chilling hours necessary for strawberry production.

Steve Fennimore, Cooperative Extension Specialist, UC Davis updated attendees on the use of steam to kill soil pathogens, in place of fumigants. He said work is focused on reducing the cost and outlined possible use of a prototype machine around certain higher risk areas near buffer zones on production fields.

Karen Klonsky UC Cooperative Extension specialist

Karen Klonsky UC Cooperative Extension specialist

Karen Klonsky, Cooperative Extension Specialist, UC Davis spokes about the economic considerations of alternatives to fumigation and producing a second year crop.

Also speaking was Thomas Flewell, Flewell Consulting, Watsonville-Salinas. His topic focused on evaluating pest management strategies with numbers. What do the numbers mean and how do we really know what we’re doing.

A more detailed report can be found in future issue of Vegetables West Magazine. Free subscription at VegetablesWest.com.

2021-05-12T11:06:02-07:00November 22nd, 2013|
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