Posts Tagged: Alda Pires
A new study by UC Davis researchers finds a low risk of contamination of foodborne pathogens on produce and meat at Northern California certified farmers markets, but still finds cause for some concern.
The study, published in the Journal of Food Protection, examined the prevalence of Salmonella on meat and produce, as well as the prevalence of generic E. coli on produce. Samples were taken from 44 certified Northern California farmers markets, including in the Sacramento region and Bay Area. Less than 2% (1.8%) of animal products sampled, including beef, pork and poultry, tested positive for Salmonella, while all produce samples tested negative. Slightly more than 30 percent (31.3%) of produce tested positive for generic E. coli. Generic E. coli is an indication of fecal contamination, but not all E. coli is harmful. This study didn't test for pathogenic E. coli.
“Based on this data, I think it's safe to consume meat and produce from farmers markets,” said lead author Alda Pires, a UC Cooperative Extension specialist and research scientist in the UC Davis School of Veterinary Medicine. “That's a low risk of contamination of foodborne pathogens, especially Salmonella.”
While the prevalence of generic E. coli may seem relatively high, the concentrations were low. Pires said that's especially so compared to previous studies of contamination at farmers markets elsewhere in the United States. The prevalence of Salmonella in meat sampled from Northern California farmers markets is also much lower than what previous studies have found in grocery stores.
Among the produce sampled, leafy greens had the highest prevalence of E. coli, followed by root vegetables.
Consumers should still be cautious
Consumers and farmers should still be aware that produce and meat were not free from contamination. Consumers need to make sure the foods they prepare from farmers markets follow the good hygiene practices recommended by Centers for Disease Control and Prevention. Consumers should also keep produce separate from meat to avoid cross-contamination.
“The study raises awareness that it's not just very large farms that can have contamination,” said co-author Michele Jay-Russell, with the Western Center for Food Safety at UC Davis. “Farmers need to pay attention to everything they're doing, from planting to storage, to avoid contamination.”
While certified farmers markets are inspected for food hygiene, microbiological quality is not explored. Smaller farms, those making less than $25,000 a year, are also exempt from certain food-safety provisions of the U.S. Food and Drug Administration's Food Safety and Modernization Act. Foodborne illness costs the U.S. economy more than $15 billion annually.
Other co-authors include James Stover, Esther Kukielka, Viktoria Haghani, Peiman Aminabadi and Thais De Melo Ramos of UC Davis. Research support came from the U.S. Department of Agriculture.
ASEV's Invasive Pest Webinar Series Starts June 3
(Wine Business) May 30
… The invasive pest webinar series will include:
June 3: Impact of the New Invasive Pest, Spotted Lanternfly, in the Northeastern Vineyards by Heather Leach (The Pennsylvania State University, University Park) at noon – 1:00 p.m. (PDT)
July 2: Fruit Flies and Their Role in Causing Sour Rot by Megan Hall (University of Missouri, Columbia) at noon –1:00 p.m. (PDT)
October 22: Lifecycle Modeling and the Impacts of Climate Change by Gwen-Alyn Hoheisel (Washington State University, Prosser) at noon – 1 p.m. (PDT)
November 12: Invasive Species Response: Lessons from the European Grapevine Moth Collaboration Program by Monica Cooper (University of California, Cooperative Extension, Napa County) at noon – 1 p.m. (PDT)
UC Davis sponsoring COVID-19 symposium
(Woodland Daily Democrat) May 30
… Statewide Extension apiculturist Elina Lastro Niño, based in the UCD Department of Entomology and Nematology, is scheduled to share her expertise on bee venom, one of the possible COVID-19 treatments suggested by researchers but not yet investigated.
… Among those asking questions will be Jennifer Cash, the newest faculty member of the UCD College of Biological Sciences; Fred Gould, a National Academy of Sciences member; UC Cooperative Extension adviser Surendra Dara; and University of Brasilia graduate student Raquel Silva.
Gardens Have Pulled America Out of Some of Its Darkest Times. We Need Another Revival.
(Mother Jones) Tom Philpott, May 29
The first great national gardening mobilization came two decades later, scholar Rose Hayden-Smith writes in her 2014 book Sowing the Seeds of Victory: American Gardening Programs of World War 1. Building on a Progressive Era push to install gardens in public school yards as an educational tool, President Woodrow Wilson tapped the Bureau of Education, with funding from the War Department, to launch the US School Garden Army shortly after sending troops to intervene in the European conflict. “A Garden for Every Child,” its slogan promised. “Every Child in a Garden.”
The School Garden Army was just one of several national programs that “encouraged Americans to express their patriotism by producing and conserving food,” Hayden-Smith adds. Wilson also promoted a civic gardening boom through the Committee on Public Information, which hired writers, artists, scholars, and advertising professionals to create marketing campaigns to promote school, home, and community gardening.
More scientists joining UC Cooperative Extension
(Daily Democrat) Jim Smith, May 29
Four staff research associates will join the ranks of UC Cooperative Extension scientists in the coming months to support nut crop advisors conducting critical research in walnut, almond and pistachio production.
The California Walnut Board, the Almond Board of California and the California Pistachio Research Board together have provided about $425,000 to cover annual salaries, benefits, travel and equipment for the new UC Cooperative Extension staff. Under the terms of the agreement, the new positions will be funded annually for up to three years, pending available funds and success of the program.
Tree Nut Industry Provides Funding for more UCCE Researchers
(Ag Net West) May 29
The California tree nut industry is helping to provide funding for four new research associates who will become part of the UC Cooperative Extension system. The addition of the new personnel is being made possible by the California Walnut Board, the Almond Board of California, and the California Pistachio Research Board who have contributed a total of $425,000 in funding support. Collaborations like this are one of the many ways that the UC system is able to support important agricultural research through alternative funding methods.
Modoc County continues to see zero coronavirus cases
(Action NewsNow) Ana Marie Torrea, May 28, 2020
…Next month, the Modoc Junior Livestock Auction is planned for June 8 to June 12. Action News Now reached out to the U.C. Cooperative Extension which oversees the auction. A representative tells Action News Now that they've already made significant changes to the event.
The event's Facebook page says it is working to follow state guidelines by increasing seating and sanitation.
Gardens Have Pulled America Out of Some of Its Darkest Times. We Need Another Revival.
(Mother Jones) Tom Philpott, May 29
…The first great national gardening mobilization came two decades later, scholar Rose Hayden-Smith writes in her 2014 book Sowing the Seeds of Victory: American Gardening Programs of World War 1. Building on a Progressive Era push to install gardens in public school yards as an educational tool, President Woodrow Wilson tapped the Bureau of Education, with funding from the War Department, to launch the US School Garden Army shortly after sending troops to intervene in the European conflict. “A Garden for Every Child,” its slogan promised. “Every Child in a Garden.”
Women Taking the Reins at Marin's Family Farms
(Marin Magazine) Christina Mueller, May 27
…The two sisters, who grew up on the family ranch but no longer live there (Melissa lives in Novato, Jessica lives in Bend, Oregon), were looking to re-establish their connection to the family's West Marin land. After attending a University of California Cooperative Extension (UCCE) and MALT agricultural summit 15 years ago that focused on helping the next generation of Marin ranchers figure out how to sustain small family farms, the sisters started researching, digging into their family history to learn what Angelo and subsequent generations of Poncias produced. Cattle, dairy and potatoes kept appearing at the top of the list. With the help of the Tomales Regional History Center, they found an old Petaluma Argus Courier newspaper advertisement where their grandfather posted about the potato varietals he was working with. One of those varietals was known as the Bodega Red.
San Joaquin County cherries withstand ‘spotty' rain losses
(Ag Alert) Kevin Hecteman, May 27
… Rain gauges around the area showed 0.19 to 0.52 inch fell during this year's May storms, according to Mohamed Nouri, a University of California Cooperative Extension orchard advisor in San Joaquin County, with cherries in the Escalon area being among the most affected
… Temperature plays an important role in the rate of cherry fruit cracking, Nouri said; more water is taken up when the temperature is warm following rain, causing the cherry to expand and split.
Table grape industry promotes viticulture research
(Farm Press) Lee Allen, May 27
…Another of the presented research subjects involved remote sensing for nutrient content detection. Ali Pourreza of the University of California Cooperative Extension was one of the presenters.
“Future agricultural and food production systems must make better use of limited resources to ensure farmers can economically produce more high-quality food while minimizing impact on the environment,” Pourreza said. “An effective nitrogen (N) management plan involves monitoring vine N status, currently accomplished by collecting plant tissue samples for lab analysis.
Houston Wilson Named Presidential Director for the Clif Bar Endowed Organic Agriculture Institute
(Cal Ag Today) May 27
Houston Wilson has been named the Presidential Director for the University of California's Organic Agriculture Institute, which was established in January 2020 with a $500,000 endowment by Clif Bar and a matching $500,000 endowment from UC President Janet Napolitano.
(Move Your DNA) Katy Bowman, May 26
… First up, I am talking to Dr. Rose Hayden-Smith. She is an author, educator, and advocate for a sustainable food system. She is University of California emeritus. Dr. Hayden-Smith leverages the power of social technologies in her research as a historian, to tell stories, share information, start conversations, and engage with a wide range of people interested in the food system. She believes in the power of gardens to transform the world. And I first interviewed Rose in 2018 and I'll be sharing parts of that interview, where we discuss gardening, how to get started, the history of Victory Gardens, as well as garden movement tips. But I wanted first to get Rose's take on our current situation, and what she thinks about how things are changing.
California Nut Industry Funds 4 New Extension Researchers
(Growing Produce) David Eddy, May 26
Four staff research associates will join the ranks of University of California Cooperative Extension scientists in the coming months to support nut crop advisors conducting critical research in walnut, almond, and pistachio production.
Specialty grant to examine impact of integrating animals in crop rotations
(Farm Forum) May 24
…“Fresh produce growers and their advisors will benefit from learning about the impacts of integrating livestock grazing with winter cover crop management on soil health including soil organic matter, nutrient cycling and reduced nitrate leaching, and potential food safety risks discovered in this project to make decisions on adoption, management, and environmental benefits of WCC in annual vegetable systems,” said Alda Pires, University of California Cooperative Extension specialist and lead principle investigator in the study.
ABC30 salutes Michael Yang on Asian Pacific American Heritage Month
(ABC30) Aurora Ortiz Diaz, May 22
ABC30 salutes Michael Yang on Asian Pacific American Heritage Month.
Yang is a former Hmong refugee who came to the United States when he was ten years old. He has worked for UC Cooperative Extension's Division of Agriculture and Natural Resources for 26 years.
Yang says, "I'm a certified pesticide safety trainer, I speak Hmong, Lao, and English." Yang connects with local Southeast Asian farmers when he visits their farms in the central valley. "Fresno is a nice place to grow everything. We're the number one ag county in the nation."
Project explores livestock grazing impacts on organic crops
(Feedstuffs) May 22
…“Fresh produce growers and their advisors will benefit from learning about the impacts of integrating livestock grazing with winter cover crop management on soil health, including soil organic matter, nutrient cycling and reduced nitrate leaching and potential food safety risks discovered in this project to make decisions on adoption, management and environmental benefits of winter cover crop management in annual vegetable systems,” said Alda Pires, University of California Cooperative Extension specialist in the University of California-Davis (UC-Davis) School of Veterinary Medicine and principle investigator in the study.
Leafy Green Growers Will Survive COVID-19
(Growing Produce) Carol Miller & Frank Giles, May 20, 2020
…“The lag in adjusting to the situation is mostly a two-month window for a crop like lettuce,” says Richard Smith. Smith is a University of California Vegetable Crop and Weed Science Farm Advisor at the Cooperative Extension in Monterey, Santa Cruz, and San Benito counties.
…“Companies varied in their level of exposure to this market that just collapsed,” Smith says. “Some were more exposed than others. Given other issues with the food distribution system, in general, some growers think that they may be 30% overplanted.”
The Underlying Importance of Improving Broadband Expansion
(AgNet West) Brian German, May 20
The University of California Agriculture and Natural Resources (UC ANR) continues efforts to assist rural Californians in gaining access to high speed internet. UC ANR has spearheaded multiple initiatives that have driven development in underserved areas of California to provide better coverage in rural communities. Vice President of UC ANR, Glenda Humiston noted the importance of providing broadband internet to rural, agricultural communities will become even more critical moving forward.
Hard-fought industry wins 'evaporating' under new budget reality
(Agri-Pulse) Brad Hooker, May 20
… Roschen was also disappointed by a 10% cut to the current budget for the UC Agriculture and Natural Resources Division.
(Brooklyn Reader) Erin DiCaprio, May 19
Wear a mask, but skip the gloves. Don't sanitize the apples. And if you are older than 65, it's probably best to still order your groceries online.
As a food virologist, I hear a lot of questions from people about the coronavirus risks in grocery stores and how to stay safe while shopping for food amid the pandemic. Here are answers to some of the common questions.
The Conversation https://www.youtube.com/watch?v=TICHjPLwcIY https://theconversation.com/heres-how-to-stay-safe-while-buying-groceries-amid-the-coronavirus-pandemic-138683
New bioinsecticide promises help with tree nut pests
(Farm Press) Tim Hearden, May 19
….“Based on what I hear from some growers and the biopesticide industry data, there has been a steady increase in biopesticide use,” said Surendra Dara, a University of California Cooperative Extension entomologist.
These 5 foods show how coronavirus has disrupted supply chains
(Nat Geo) Sarah Gibbens, May 19
… “What we have is a low-cost and efficient system that allows for huge variety and attention to individual tastes,” says Daniel Sumner, an economist at the University of California, Davis.
“A dairy farm has milk coming out of the cow into a tank. That milk must be pasteurized and packaged, meeting lots of food safety standards,” says Sumner.
Individual farms generally can't afford the equipment necessary to process milk on site without raising prices significantly. “Nowhere is a dairy farm suited to send milk directly to a store,” Sumner says.
People who raise backyard and community livestock and poultry are invited to learn the latest disease prevention and treatment information from University of California experts. UC Cooperative Extension and the School of Veterinary Medicine are hosting a series of workshops in Northern California, starting in Sonoma, Contra Costa and Stanislaus counties.
- Animal health
- Emergency preparedness
- Veterinary feed directive
- Antibiotic use under Senate Bill 27 (SB 27)
Livestock owners will have an opportunity to ask questions, raise concerns and connect with local veterinarians, UC Cooperative Extension advisors and other livestock enthusiasts.
The Healthy Animals, Healthy People Workshops are scheduled at the following locations:
- Santa Rosa, Sept. 29, 2018, 10 a.m. to 3 p.m., at the Sonoma County Farm Bureau, 3589 Westwind Blvd, Santa Rosa, CA 95403
- Modesto, Oct. 13, 2018, 9 a.m. to 2 p.m., at the Stanislaus County Harvest Hall, 3800 Cornucopia Way, Modesto, CA 95358
- Concord, Nov. 10, 2018, 10 a.m. to 3 p.m., at the UC Cooperative Extension Office, 2380 Bisso Lane Ste. B, Concord, CA 94520-4829
The workshop fee is $10, which includes lunch. For more information and to register for this workshop, please visit http://ucanr.edu/backyardlivestock.
[Updated 10/5/2018 The Oct. 6 Concord workshop has been postponed until Nov. 10.]
“The goal of our study is to provide organic farmers with science-based strategies that effectively limit food-safety risks when using raw manure-based soil amendments,” said Alda Pires, UC Cooperative Extension urban agriculture and food safety specialist in the School of Veterinary Medicine at UC Davis.
To study the survival of pathogens in soil and soil health, UC scientists are recruiting California growers who use raw or untreated manure in organically grown crop fields.
Pires is leading the project in California with Michele Jay-Russell, a veterinary research microbiologist and manager at the Western Center for Food Safety at UC Davis.
The researchers will visit participating farms eight times over the 2017-2018 growing season.
“We will collect produce, water, soil and manure samples,” said Jay-Russell. “All of the samples will be tested for bacterial indicators such as nonpathogenic E. coli and pathogens. We will ask the farmers to complete a short survey. The study is voluntary and all locations and names will be kept confidential.”
Eligible California farms must be certified as organic by the National Organic Program or California Certified Organic Farmers and fertilize with raw manure or untreated manure from dairy cattle, horses or poultry. The farms can grow any of the following produce: lettuce, spinach, carrots, radishes, tomatoes or cucumbers.
This study is being conducted in other states by the University of Minnesota, University of Maine, USDA Agricultural Research Service's Beltsville Agricultural Center, USDA Economic Research Service's Resource and Rural Economics Division, Cornell University and The Organic Center. The project is funded by a U.S. Department of Agriculture Organic Research and Extension Initiative grant.
A new UC study is looking at small to medium-size farms, both organic and conventional production, to identify on-farm food safety practices that are specific to farms that raise livestock and grow fresh produce. These are farms that sell their products directly to consumers at farm stands and farmers markets or through community supported agriculture (CSA).
“Much of the produce food-safety research in recent years has focused on large commercial farms,” said project co-leader Michele Jay-Russell, microbiologist and program manager at the Western Center for Food Safety at UC Davis. “In this study, we hope to identify best practices that may be unique for smaller operations and to share this information with the farmers.”
The 12-month study is being conducted on commercial farms in Northern California, from the Shasta Cascade region down to the Central Valley, including the coast. Fecal-borne pathogens can be spread to fresh fruits, nuts, and vegetables through animal intrusions, or indirectly through contaminated water or soil. The researchers are looking for the best practices that prevent pathogens from contaminating fresh market tomatoes and leafy greens such as lettuce and spinach.
“Raising livestock and growing fresh produce together for the local community presents certain opportunities and challenges from a food safety perspective,” said Alda Pires, UC ANR Cooperative Extension urban agriculture and food safety specialist in the School of Veterinary Medicine at UC Davis, who is leading the project with Jay-Russell, who is liaison to the Western Institute for Food Safety and Security.
“Our research aims to identify practical, scale-appropriate approaches that reduce risk from pathogens, while maintaining sustainable and economically viable family farms in Northern California,” said Jay-Russell, who has a small dairy goat herd in the Yuba Foothills.
Researchers will visit participating farms to collect samples of their produce, water, compost and livestock feces to test for bacteria. Farmers will be asked to complete a short survey about farm management practices. The testing is free and the farm identities are confidential.
“We anticipate publishing our results, without revealing farm names, next year and sharing the findings with the agricultural community through workshops and trainings,” said Pires, who grew up on a small family farm in Portugal.
A USDA National Institute for Food and Agriculture (NIFA) multi-state grant is funding this study and a similar study in the northeast – New Jersey, Maryland and Delaware – looking at microbial food safety issues potentially unique to small and medium-scale farms. The results of that study have been published in the International Journal of Food Microbiology and Applied Environmental Microbiology.
For more information about this food safety study, contact Alda Pires, UC ANR Cooperative Extension urban agriculture and food safety specialist, at (530) 754-9855 or firstname.lastname@example.org.