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UC Food Safety
University of California
UC Food Safety

UC Food Blog

Feeding a hungry planet

Agricultural innovation and technological advances have been harvested from UC Davis over the last century. As advances are achieved, our growing global population applies pressure for researchers to achieve more. California is a top world-wide producer of agricultural products, and California researchers work hard to find new and better ways to produce food.

The UC Davis College of Agricultural and Environmental Sciences (CA&ES) does much to contribute towards this effort. The recent CA&ES Outlook: Feeding a Hungry Planet highlights current research and innovations to provide agricultural producers knowledge and technology needed to make better, faster and economically sound decisions. This work is focused towards agriculture, conservation and economics. The articles are interesting and provide much food for thought.

For instance:

  • Everyone needs to eat, and our global population is growing quickly. Economists have documented substantial long-term benefits of agricultural research.

  • To continue feeding a growing population we have two options: increase yields on land already in production, or expand agriculture onto new land.

  • UC researchers are developing “precision agriculture” methods, which use global positioning systems (GPS), geographic information systems (GIS), wireless networks, and innovative sensor technology to deliver precise amounts of water, fertilizer and pesticides to individual plants or small blocks of plants. This individualized management will save growers money and reduce the potential environmental load from excess fertilizer and pesticide use.

  • Using GPS, a mechanical weeder has been developed. This will save growers money and reduce the need for herbicide use. On-campus testing has been successful and the weeder will be tested in a commercial field next year.

  • Increasing biodiversity on and near the farm provides many benefits towards increased food production while increasing the sustainability of farming systems.

Learn more about these topics and many others in the Fall/Winter edition of CA&ES Outlook. To find out more about the UC Davis College of Agricultural and Environmental Sciences, or to view previous publications please visit their website.

GPS receiver mounted on a tractor cab. GPS systems are increasingly used in agriculture. Photo J. Williams.
Posted on Tuesday, February 7, 2012 at 11:44 AM
  • Author: Chris M. Webb

Healthy snacks, healthy communities

A Food Blog post last week highlighted the great work of UC CalFresh, the UC Cooperative Extension nutrition education program that reaches more than 220,000 people a year, helping low-income families make healthy food choices, stretch food dollars and increase consumption of California’s agricultural products.

The University of California has an array of healthy living outreach efforts. In addition to CalFresh, one program that you might not expect involves the UC Davis School of Medicine. The Communities and Health Professionals Together program links pediatric residents with community-based organizations to identify and address health concerns.

Residents are assigned in teams to work with a grassroots, community-based organization, under the direction of a local leader or faculty member. Residents learn to identify and mobilize community assets to create, implement and evaluate projects that enhance the health and well being of local children and families. The program helps train physicians to be dedicated to their patients and their communities.

Resident Andrew Nuibe helps kids in a K-6 afterschool homework club prepare their own healthy snacks — and prevent childhood obesity.

“I encounter childhood obesity too often in my clinic, and that served as my inspiration,” Nuibe said. “As a child, I really enjoyed cooking with my parents. I wanted to share that enthusiasm and plant the seeds for a genuine interest in healthy food.”

Posted on Tuesday, January 31, 2012 at 8:10 AM
  • Author: Alec Rosenberg

More young people see future in farming

Harvest day for Lauren Asher at the UC Davis Student Farm.
The USDA is gearing up for the 2012 Census of Agriculture, the complete count it makes every five years of U.S. farms and ranches and the people who operate them. The agricultural census provides a fascinating look at farming demographics: How old are they? Where do they live? What do they grow?

Most experts believe the census will show a trend towards the green – not just green as in sustainable, local and small-scale - but also green as in greenhorn. It seems more people from non-farming families are seeking farming careers. (You can read an Associated Press story on the topic here.)

That is especially good news in California, where the current average age of a farmer is nearly 60. Farming is a $37.5 billion business in California employing 800,000 people and providing 12 percent of the nation’s agricultural exports. With the world population forecast to grow from 7 billion to 9 billion by 2050, the demand for California’s food production will continue to grow.

Will California’s farmers be able to meet that need? The UC Davis Department of Plant Sciences is helping by providing cutting-edge research and educating a whole new crop of young people eager to take on the back-breaking work of farming the land.

“We’re definitely seeing an increased interest in farming among students,” says Crop Physiology Professor Ted DeJong, a faculty adviser for the department’s Horticultural and Agronomy Graduate Group, a popular major for students interested in farming and other aspects of agriculture. Indeed, student enrollment in horticulture and agronomy has increased from 53 in fall 2008 to 92 in fall 2011.

“Yes, I do think more young people are interested in farming,” said Gina Garland, who received her master's degree in horticultural and agronomy from UC Davis last spring. “Food is so important and it’s not very secure right now, with climate change and all. Many of us are interested in trying to find ways to make farming work in our changing environment.”

Garland is now working with AmeriCorps and a non-profit group in Albuquerque, N.M., farming and helping others farm. She might not become a farmer herself, choosing, perhaps, to seek a Ph.D. (hopefully, she says, at UC Davis), conducting research to help others farm more profitably and sustainably.

Sara Kosoff, Anthoy Waldrop and Eric Lynn harvest carrots at the UC Davis Student Farm.

Meanwhile, at the UC Davis Agriculture Sustainability Institute Student Farm, young people are hoeing weeds, harvesting carrots and learning the joys and challenges of farming.

“It’s good to know where your food comes from,” says Eric Lynn, and undergraduate plant sciences student. “I think that’s what attracts a lot of us to farming.”

The high cost of farmland in California makes it tough for young people to enter the business, as noted in this recent story in the Western Farm Press. But many are finding ways to make farming pay by producing vegetables for sale at local restaurants, for example, or marketing their produce online. From urban roof-top gardening to using the latest in conservation agricultural practice, a new, younger breed of farmer is heeding the call. You can read more about that in this recent story on

Also, have you heard about the Center for Land-Based Learning? Located in Winters, just west of campus, this non-profit is dedicated to creating the next generation of farmers and teaching California’s youth about the importance of agriculture and watershed conservation. You can learn more at:

Posted on Thursday, January 26, 2012 at 8:30 AM

Plan, shop, save and cook

Creating and sticking to a list can help shoppers save money and eat healthier.
To meet the needs of today’s time-pressed consumers, UC Cooperative Extension nutrition, family and consumer sciences advisors collected the most pertinent food budgeting and healthy eating concepts together in a new curriculum that can be presented in four one-hour sessions. The curriculum is taught by UC CalFresh, a nutrition education program that helps recipients of federal food assistance (formerly called Food Stamps) make the most of their benefits.

Typically, participants are offered an eight-session course called “Eating Smart Being Active.” The UC advisors realized the audience couldn’t always devote that much time to nutrition education, said Marisa Neelon, nutrition, family and consumer sciences advisor in Contra Costa County. The salient parts were extracted and compiled into four content-packed interactive lessons: Plan, Shop, Save and Cook.

Plan, Shop, Save and Cook is presented by UC CalFresh nutrition educators at schools, churches, shelters and other venues where at least 50 percent of the participants are eligible based on federal income guidelines. But anyone can benefit from the straight-forward, simple guidelines set forth in the curriculum. Below is a sampling:


Planning meals ahead saves time and money. Families save time by avoiding last-minute trips to the grocery store. They save money by taking advantage of the weekly specials and coupons that are published in the store circulars.

Before sitting down to plan a week of meals, check the refrigerator, freezer, cupboards and pantry for foods to use. Review the store’s weekly ad for foods you need and to see what vegetables and fruits are in season. In-season produce usually costs less and tastes better.

Build your meals around low-cost, healthful food items, such as:

  • Protein - beans (garbanzo, black, cannellini), tofu, nuts, chicken and eggs
  • Vegetables - carrots, potatoes, lettuce and leafy greens
  • Fruit - apples, bananas , oranges and grapes
  • Grains - brown rice, whole wheat bread, oatmeal and pasta
  • Dairy - calcium fortified soy milk, milk, reduced or low fat cheese

Using the meal plan and grocery store ad, make a detailed shopping list.

Study the nutrition facts before purchasing food.

At the grocery store spend time carefully reading food labels, especially the “nutrition facts” and “ingredients.”

Consider the serving size on the label, how many calories and fat are in one “serving” of food and whether that serving would be a typical portion for you and your family.

The ingredient list is also important. The ingredients are listed in descending order of predominance by weight. In other words, the ingredient that weighs the most is first, and the ingredient that weighs the least is last.


When comparing prices, look for the unit price on the shelf sticker. The unit price, typically found next to the price of the product, gives the item’s cost per pound, gallon, ounce, etc. You will be able to see whether purchasing a large quantity really does cost less.

Stick to your shopping list, but be flexible. Stores will often have unadvertised specials that you can work into your healthy menu. However, avoid buying “extras” like chips and soft drinks. The cost adds up fast.

If possible, shop without children. Children may ask their parents to buy things that are not on the grocery list, not particularly healthy and often expensive. Children can also be distracting when trying to make calculations and keeping track of purchases.

If you must bring the kids, allow for extra time and involve them in the shopping process. Young children can count produce and put it into a bag. Older children can help search for specific foods, read labels and calculate unit pricing.


Use the food you purchased and the menu you planned to put together low-cost, healthy meals, such as:

  • Rice and beans
  • Baked chicken, potatoes and a vegetable
  • Pasta and a salad
  • Scrambled eggs with vegetables and toast

If your evenings are busy, keep a collection of quick recipes with minimal ingredients, find a time when you can cook several meals in advance or cook extra and plan to use leftovers for another meal.

To request a presentation of Plan, Shop, Save and Cook by UC CalFresh to an eligible group, contact your county UC Cooperative Extension office.

Posted on Tuesday, January 24, 2012 at 8:06 AM

Feed big; start small

Adapted from an article by Eileen Ecklund in Breakthroughs magazine.

Mixing crop helps promote biodiversity, like this mixed-crop field of amaranth, sunflowers and broom corn at Fully Belly Far, in Guinda, Calif. Photo: Paul Kirchner Studios
Scaling up — that’s always the sticking point with organic farming when it faces the question of whether it can feed the world’s hungry millions.

But a group of UC Berkeley scientists say that continuing on our current path of industrial agriculture is simply not sustainable, given its enormous water, energy and chemical inputs, together with the new challenges posed by climate change, such as temperature and precipitation extremes.

With the launch of the interdisciplinary Berkeley Center Diversified Farming Systems late last year, UC Berkeley scientists are coalescing around a set of biodiversity-promoting farming practices they say are a promising solution.

Claire Kremen, a conservation biologist and associate professor in the Department of Environmental Science, Policy and Management, says that most or even all of the inputs that modern commercial farms require — chemical pesticides and fertilizers, wasteful amounts of water and energy, imported pollinators — were needed only because the monoculture-dominated landscapes created by industrial agriculture lacked biodiversity.

"From studying the pollinators, I realized that the way we conduct agriculture has basically required us to replace all of the ecosystem services that used to be in the agricultural ecosystem with substitutes," said Kremen, a 2007 MacArthur Fellow.

Generally speaking, a diversified farming system is one that promotes biodiversity across spatial scales, from plot to field to landscape. Crops are planted and livestock raised in combination, resulting in interactions that sponsor the functioning of the farming systems in ways that replenish natural ecosystems. Methods employed within a diversified farm may include minimal soil tillage, growing multiple crops together, planting cover crops, and interspersing trees and shrubs with crops and livestock.

Animals help to clear cover crops, which add nutrients to the soil and feed the animals, which in turn bear wool. Photo: Paul Kirchner Studios

These practices also provide pollination, pest and disease control, water purification, and erosion control. They help to build healthy, productive soil and reduce water use, as demonstrated by research conducted by Kremen and her Berkeley colleague Miguel Altieri in their respective labs and on farms in Napa, Sonoma, and Yolo counties.

But diversified farming systems aren't just about providing food and protecting the environment; to be truly sustainable, they must also provide a livelihood to farmers and farm laborers, and help support the communities that depend on them. UC Berkeley-based Cooperative Extension specialist Christy Getz has studied farm labor conditions and food security among agricultural workers. In one project, her team developed a program to help Southeast Asian refugee farmers in California scale up their operations, connect to alternative distribution systems, and access new markets for their produce, such as local schools.

Professor Alistair Isles focuses on the public policy, science policy, and sociological dimensions of making a switch back to diversified systems from industrial agriculture in developed countries. For example, he has studied the importance of innovative consumer tools that promote sustainable agriculture such issues as "food miles"—the distance that food travels from farm to table—and sustainable seafood evaluation methods.

A native species hedgerow borders an artichoke field at Fully Belly Farm in Guinda, Calif. Photo: Paul Kirchner Studios
Other Berkeley professors associated with the new center are experts in economics, agroecology and rangelands, bastions of biodiversity that support a host of ecosystem services beneficual to agriculture, including the pollination provided to farmers by wild bees.

If farmers could bring back many of the traditional practices that supported biodiversity, enhanced by the application of modern ecological science, Kremen believes that the world could produce more food while reducing agriculture's harmful effects, making it more sustainable over the long term.

And unlike organic agriculture, diversified farming systems are not an all-or-nothing approach; Kremen says farmers can implements all the systems the Berkeley center recommends based on its research, or simply implement selected techniques, such as planting native-plant hedgerows or using soil-enriching cover crops, and still make their farms more sustainable.

Posted on Thursday, January 19, 2012 at 8:07 AM
  • Author: Ann Brody Guy

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