- Author: Saoimanu Sope
In late January, the University of California Nursery and Floriculture Alliance co-hosted the 62nd Western Region International Plant Propagators' Society (WR-IPPS) Annual Meeting in Temecula.
UCNFA, associated with the Nursery and Floriculture Workgroup of UC Agriculture and Natural Resources, is a statewide partnership of researchers and educators, growers, floriculture associations and allied industries. It serves the educational needs of California's agricultural industries that produce greenhouse crops and nursery products including vegetable seedlings, ornamentals, fruiting trees, vines and shrubs.
“Up until 2007 and before almonds and grapes became a big deal, nursery and floricultural products were the top crop commodity in the state,” said Loren Oki, specialist emeritus of Cooperative Extension at UC Davis and co-director of UCNFA. “Nurseries and floriculture are a $3.6 billion industry in California, but not many people know about it.”
Since its inception in 1951, IPPS has sought and shared plant production knowledge globally with an emphasis on nursery production. Oki has been a member of IPPS since the 1980s. His father, George, who owned and operated Oki Nursery, helped establish the Western Region in the 1960s, paving a path for Oki who served as president of WR-IPPS in the 1990s.
Although this year was the first that UCNFA co-hosted, Oki is confident that it won't be the last. “We're already planning a conference for the fall in conjunction with WR-IPPS. Since the target audience of UCNFA are growers, it just makes sense to partner with growers for these events,” Oki said.
This year's meeting involved 145 attendees, 29 exhibitors and 23 speakers and occurred over four days – two of which were dedicated to grower tours and the other two offering educational presentations in both English and Spanish, another first for WR-IPPS.
Gerry Spinelli, UC Cooperative Extension production horticulture advisor for San Diego County and member of UCNFA's administrative committee, was instrumental in coordinating the event. When he wasn't moderating sessions or facilitating Q&A, Spinelli was sharing his expertise on measuring pressure, distribution uniformity and improving irrigation management in English and Spanish.
“It's rewarding to see so much statewide interest in nurseries and floriculture,” said Spinelli. “WR-IPPS is a great opportunity to showcase the extraordinary San Diego nursery and greenhouse industry on an international stage, and a perfect occasion for clientele to meet our new UC Cooperative Extension advisors.”
Bruno Pitton, who became the UCCE environmental horticulture advisor for Placer and Nevada counties in November, appreciated the increase in science-based talks compared to previous years.
“Before, there were more talks on production practices from grower to grower. This year, I noticed that there's more science extension talks – which is a good thing,” said Pitton, who also gave a presentation on nitrogen management in nursery production and irrigation training.
Recent UC ANR hires like Emma Volk, production horticulture advisor for Ventura and Santa Barbara counties, had the opportunity to learn not only from industry leaders nationwide, but fellow ANR colleagues. For example, she heard Don Merhaut, UCCE specialist for nursery and floriculture crops based at UC Riverside, present on controlled release fertilizer dynamics in containers during a one-year growing cycle for Southern California.
UCCE advisors and specialists had a significant presence at this year's meeting, leaving a positive impression on attendees, including Tony Shireman, WR-IPPS president, who said that partnering with UC ANR experts helps IPPS achieve its mission to seek and share plant knowledge globally.
“We're fortunate to have connections to people like those joining us from Cooperative Extension. It allows us to expand our knowledge and extend our reach,” Shireman said.
Johanna Del Castillo Munera and Kosana Suvocarev, two professors of Cooperative Extension at UC Davis, also attended and joined Spinelli for both English and Spanish sessions. Del Castillo Munera presented on disease challenges and management for nurseries, and Suvocarev talked about crop water requirements for irrigation scheduling in nurseries and greenhouses.
“There's a good sense of community here and there's a lot of passion from the speakers,” said Grant Johnson, UCCE urban agriculture technology advisor for UCCE Los Angeles and Orange counties, adding that he valued the opportunity to learn from growers and scientists simultaneously.
After attendees spent an entire day touring local nursery and floriculture operations and learning from growers in North San Diego County and Riverside County, they concluded the day with a dinner and keynote address from Karen Ross, California Department of Food and Agriculture secretary.
On the last day, Chris Shogren, UCCE environmental horticulture advisor for Los Angeles County and member of UCNFA's administrative committee, and Eric Middleton, UCCE integrated pest management advisor for San Diego, Los Angeles and Orange counties, talked about pest and pathogen management. The advisors offered fascinating visuals including photos comparing the size of agave mites to a penny, and led a stimulating Q&A session.
To learn more about the UC Nursery and Floriculture Alliance, visit https://ucnfa.ucanr.edu/.
- Author: Pamela Kan-Rice
Hales begins as new AVP at UC ANR
Brent Hales joined UC ANR as the new associate vice president for research and Cooperative Extension on July 3.
Hales brings over 20 years of higher education research and leadership experience, including at land grant institutions and in Cooperative Extension. He most recently served as an associate dean of Pennsylvania State University's College of Agricultural Sciences and director of Penn State Extension.
Before joining Penn State in 2019, he served as the senior associate dean and chief financial officer of the University of Minnesota Extension, associate dean for the University of Minnesota Extension Center for Community Vitality, and the director of the Economic Development Authority Center at University of Minnesota, Crookston.
Hales earned a Ph.D. in rural sociology from Iowa State University, a master's degree in sociology from Middle Tennessee State University and a bachelor's degree in sociology from Brigham Young University in Utah.
While attending the UC ANR statewide conference in April, he was interviewed by Rodger Wasson for the “Farm To Table Talk” podcast. You can hear Hales explain that “Cooperative Extension is more than just kids, cows, sows and plows” at https://farmtotabletalk.com/beyond-kids-cows-sows-plows-brent-hales-uc-anr.
Hales is based at the Second Street building in Davis and can be reached at bdhales@ucanr.edu, (530) 786-0256 and on Twitter @BrentDHales. Vanya Woodward, who is providing his administrative support, can be reached at vwoodward@ucanr.edu.
Wayne joins UCCE as food systems advisor
Laurie Wayne joined UC Cooperative Extension on July 5 in Modoc County as a nutrition and food systems advisor for Modoc, Lassen and Siskiyou counties. Wayne will work with community members on healthy lifestyles, nutrition, food access and security, local food production, preservation and availability.
Wayne brings years of high-desert food systems experience to her role: she owned and operated Locavore Farms in Fort Bidwell, helped found the Surprise Valley Saturday Market and Modoc Harvest, and was on the team that started the Modoc Harvest Food Hub. She also has worked supporting healthy communities for Oregon State University Extension in Klamath Falls, and at the High Desert Food and Farm Alliance in Bend, Oregon.
She earned a master's degree in TESOL (to teach English as a second language) from Portland State University and worked in school and community gardens with immigrants and refugees as part of her research project. She earned a bachelor's degree in Italian literature from UC Santa Cruz.
This job feels like the culmination of the farming, studying, supporting farmers and working in food systems she has done in the past 15 years, Wayne said.
“I'm especially interested in working on expanding access to affordable, healthy, local food year-round, including extending and preserving the harvest,” Wayne said. Her goal is to help everyone feel empowered to make healthy food choices, and she's learning what resources producers need to improve processing, transportation and production strategies, and overcome barriers that are unique to the region.
To better understand both the food systems needs and the abundant food assets of northeastern California, she will be meeting with community members; state, local and regional nonprofits; schools and other organizations in the next few months. They will discuss ways to strengthen community food system resilience.
“It's all about healthy community members who can eat good local food without breaking the bank, and producers who can make a living feeding them,” Wayne said.
Based in Alturas, Wayne can be reached at lwayne@ucanr.edu and (530) 233-6400.
Hyland named UCCE environmental health sciences specialist
Carly Hyland joined UC ANR in July as a UC assistant Cooperative Extension environmental health sciences specialist/assistant professor in the UC Berkeley School of Public Health.
She recently finished a mixed-methods project at Boise State University examining pesticide exposure and perceptions of the risks of pesticides among Latino men and women farmworkers in Idaho. In California, she is pursuing projects examining interventions to protect farmworkers from pesticides, extreme heat and wildfire smoke in collaboration with community partners.
“There are so many reasons I wanted to come back to Berkeley, and I think one of the biggest motivating factors for me was the collaborative environment focused not just on conducting innovative research, but also translating those findings into solutions to improve community health,” Hyland said. “Farmworkers are increasingly experiencing the health impacts of climate change on a daily basis, and this position will provide me with the resources and collaborations necessary to identify strategies to address these urgent issues.”
Hyland earned her Ph.D. in environmental health sciences and master's degree in global health and the environment, both from UC Berkeley, and bachelor's degree in environmental science from Carthage College in Wisconsin.
Hyland is based at UC Berkeley and can be reached at chyland@berkeley.edu and on Twitter @c_hyland1.
Sam-Chen joins NPI as policy analyst
Samantha Sam-Chen joined the Nutrition Policy Institute on June 15 as a new project policy analyst.
She began her work at NPI as a graduate student and received her master's in public health with a concentration in public health nutrition from the UC Berkeley School of Public Health.
Her primary research interests include food and nutrition insecurity, evaluating food and nutrition programs, and early childhood nutrition interventions. Through her work, Sam-Chen hopes to contribute to research that will result in policies that eliminate nutrition-related health disparities. She brings over a decade of experience working with California school districts, primarily in rural and predominantly Latino communities. At NPI she works on several projects, such as evaluating the California Nutrition Incentive Program and California's Universal Meals Program.
Sam-Chen is based at UC Office of the President in Oakland and can be reached at ssamchen@ucanr.edu.
Murillo-Barrick named BIPOC advisor for Bay Area
Murillo-Barrick, who had worked as UCCE academic coordinator focused on planning grants for Fresno, Merced, Madera and Tulare counties since 2021, described her new role as “more holistic,” prioritizing historically marginalized communities. Murillo-Barrick will be identifying opportunities to leverage the strengths of BIPOC communities.
In addition to conducting a needs assessment, Murillo-Barrick is planning to form a language access group at ANR – something she is very passionate about. This group will focus on identifying language barriers and best practices by engaging programs like CalFresh Healthy Living, UC and the Expanded Food and Nutrition Education Program that have expertise conducting multilingual programs throughout California. For example, they may recommend increasing accessibility using infographics and/or video, both of which can be translated into different languages and/or dialects.
The realm of diversity, equity and inclusion is not new to Murillo-Barrick, who has worked in outdoor education spaces, serving historically underserved communities of color. “I worked in DEI before it was considered ‘cool,'” she said.
“I have a lot of influence over program development in this role,” said Murillo-Barrick, who is fluent in Spanish. “So, my goal as an advisor is really focused on the community engagement part,” she added.
Murillo-Barrick earned a master's degree in geography and community development and a bachelor's degree in Spanish and international relations at UC Davis. During graduate school, she studied conservation issues in Nicaragua, as well as in her homeland, Costa Rica.
Aside from her academic training and previous work, Murillo-Barrick believes that mentors – including Mary Blackburn, UC Cooperative Extension health and nutrition advisor for Alameda County – who were instrumental in creating the BIPOC community development advisor position, have prepared her well for this role.
“I'm the only one within UC ANR who has ‘BIPOC' in my title, but everyone has BIPOC among their clientele,” said Murillo-Barrick. “I'm tasked with leading our community development efforts, but we all play a part in this work.”
Murillo-Barrick is based out of the UCCE office in Hayward and can be reached at cmurillo@ucanr.edu.
Oberholster honored with American Dream Award
“Dr. Oberholster is an example of the promise of the American Dream and importance that immigrants play on education in our country,” said Thompson. “UC Davis is one of the premier research universities in the world, and it is thanks to people like Dr. Oberholster that a UC Davis education is highly sought after. I am proud to honor Dr. Oberholster with the American Dream Award and I look forward to seeing how her research and contributions at UC Davis continue to benefit our region and the world.”
Oberholster was born in South Africa, where she received a bachelor's degree in biochemistry and chemistry and an honors degree in chemistry from Stellenbosch University. She earned a Ph.D. in wine science from the University of Adelaide in South Australia in 2008. In 2011, she moved to the United States to work as UC Cooperative Extension specialist at UC Davis.
Oberholster has been a board member of the American Society of Viticulture and Enology for six years and is currently the 2nd vice-president of the society. She also has worked as the secretary of the American Society for Enology and Viticulture Foundation, which fundraises to give scholarships to viticulture and enology students. Furthermore, she is a member of the LLC Management Committee that organizes the Unified Grape and Wine Symposium. She is currently the chair of the Department of Viticulture and Enology's coordination and extension committee. Previously, she was the chair of the Viticulture and Enology graduate group and advised incoming students.
Oberholster is vice-chair of the Department of Viticulture and Enology and is doing important research to benefit the grape and wine communities. She focuses on grape and wine challenges, including grapevine red blotch disease and the impact of wildfire smoke on grape and wine quality. Oberholster helps the wine community become more sustainable, such as improving the quality of winery wastewater recycling methods.
The American Dream Award honors immigrants who have excelled professionally, through entrepreneurship and innovation, in the arts and culture, or through community service.
Diaz Rios wins Early Professional Achievement Award
Informed by the socioecological determinants of nutritional health, Diaz Rios studies methods of reaching groups at risk of malnutrition. She specializes in applying cross-cultural adaptation methodologies to develop nutrition education and to measure the value of tools. She has contributed to the production of culturally relevant educational resources to improve the food environment for people at critical stages of development, especially young children. Her approaches to adapt and validate evaluation tools for cultural relevance allow for accurate and reliable documentation of the impact of nutrition education programs in California and nationally. Recently, she has been exploring approaches to improve nutrition education in medically underserved communities.
Diaz Rios's published work informed the Journal of Nutrition Education and Behavior's guidelines for authors, reviewers and editors on publishing race and ethnicity data. One of her studies pointed out the scarcity of quality studies on interventions to improve diet-related health disparities. Her research also highlighted structural factors affecting food security among Latinas during the pandemic.
As a member and later chair of SNEB's journal committee, Diaz Rios led the creation of a mentorship program and recruitment of the first JNEB Mentored Editor; oversaw approval of three of the society's position papers; and participated in advancing the principles of diversity, equity and inclusion in the journal.
This award recognizes one SNEB member who has made notable contributions in the field of nutrition education and behavior and to SNEB as an organization during the early stages of their career, defined as less than 10 years as a nutrition educator.
Diaz Rios, who joined UC ANR in 2014, received the award at the SNEB International Conference in Washington D.C. on July 21.
UC IPM wins ACE gold award for online course
The UC Statewide Integrated Pest Management Program won a gold award from the Association for Communication Excellence for its online course “Urban Pyrethroid and Fipronil Use: Runoff and Surface Water Protection.”
Cheryl Reynolds, UC IPM interactive learning developer, led development of the self-paced course and served as lead instructional designer, audio/video editor, photographer and narrator. Petr Kosina, UC IPM content development supervisor, contributed instructional design, cartoon animations and photography. Karey Windbiel-Rojas, associate director for Urban and Community IPM, and Loren Oki, UC Cooperative Extension specialist, were principal investigators for the project. California Department of Pesticide Regulation's Robert Budd, Aniela Burant and Carlos Gutierrez served as subject matter experts.
Pesticides are the most common way structural and landscape pests are managed in urban environments. It has been estimated that more than 2 million pounds of urban pesticides are used for structural and landscape applications annually in California, resulting in the potential for pesticide residues to be washed into storm drains during rain or irrigation events. Water carrying this residue runs directly into creeks, lakes, and rivers, harming aquatic organisms and disrupting the entire food chain within sensitive water ecosystems.
The “Urban Pyrethroid and Fipronil Use: Runoff and Surface Water Protection” online course presents information on California's Surface Water Protection Regulations that were put into place in 2012 to reduce the amount of pyrethroids in surface water runoff. The course illustrates the types of applications allowed under the regulations, as well as those that are prohibited and those that are exempt.
This course was developed for licensed pest management professionals who work primarily in structural pest control or landscape maintenance and use pyrethroid pesticides and fipronil for their work.
Funded by the California Department of Pesticide Regulation, the interactive course has received positive comments from participants such as, “This was a good course to take. It was interesting and well done. It will make you think about what goes down the storm drains.”
The course was developed using the Adobe Captivate authoring software and is hosted on the eXtension platform, which uses the Moodle learning management system.
To learn more about the course, watch this video: https://youtu.be/5ogj2ZLk5XA.
Keatley Garvey wins ACE photo award
Headlined “Monarch Butterflies: Closer to Extinction,” the blog included photos of a monarch egg, caterpillar, chrysalis and male and female butterflies, all images she captured in her family's pollinator garden in Vacaville.
The blog noted that the International Union for Conservation of Nature announced on July 21, 2022, that the migratory monarch butterfly (Danaus plexippus) was now on its "Red List of Threatened Species as Endangered--threatened by habitat destruction and climate change."
Gosliner appointed to National Institute of Health working group
The ADVANTAGE project is an effort to better understand the intersection of food systems, diet, nutrition and health in a changing environment by addressing how the current realities of climate/environmental change are affecting dietary choices, patterns and relevant aspects of the food system, as well as implications for specific public health outcomes of interest. This effort seeks to determine how an ecological approach can be applied to assess the nature and impact of these relationships and how to best translate the evidence generated to promote health and prevent disease.
Gosliner is a member of the ADVANTAGE Working Group 5, tasked to focus on translation and implementation to support context-specific, equitable, safe and efficacious interventions, dietary guidance and standards of care in a changing environment.
Working Group 5 conducted a virtual workshop on June 12. Gosliner and collaborator Jenn Otten from the University of Washington hosted “A Conversation about Dissemination and Translation.” The recording from their presentation is available online and their talk begins at 1:46:30.
- Author: Kathy Keatley Garvey
Congrats to the University of California recipients of awards from the Association for Communication Excellence (ACE), an international association of communicators, educators and information technologists who focus on communicating research-based information.
ACE officials recently handed out gold, silver and bronze awards at their 107th annual conference, held in Asheville, N.C. ACE's first conference occurred July 10, 1913, when land-grant college agricultural editors gathered at the University of Illinois.
And now, the California winners:
The University of California Statewide Integrated Pest Management Program (UC IPM) won the gold award in the Information Technology category, Instructional Design for a Non-Academic Public Online Course, for its “Self-Paced Online Course: Urban Pyrethroid and Fipronil Use-Runoff and Surface Water Protection.”
The team: Petr Kosina, Cheryl Reynolds, Robert Budd, Aniela Burant, Carlos Gutierrez, Karey Windbiel-Rojas and Loren Oki.
The course, for pest management professionals who work primarily in structural pest control or landscape maintenance, “presents information on the Surface Water Protection Regulations that were put into place to reduce the amount of pyrethroids in surface water runoff. It discusses the types of applications allowed under the regulations as well as those that are prohibited and those that are exempt." The course, available for free, must be completed by Dec. 30 of the current year.
Kathy Keatley Garvey (yours truly), communication specialist for the UC Davis Department of Entomology and Nematology, won a bronze award (third place) in the pictorial series category. Her submission included a series of monarch images published July 27, 2022 on her Bug Squad blog, UC Agriculture and Natural Resources website.
Headlined “Monarch Butterflies: Closer to Extinction,” the blog included photos of a monarch egg, caterpillar, chrysalis and male and female butterflies, all images she captured in her family's pollinator garden in Vacaville.
The blog dealt with International Union for Conservation of Nature (IUCN) announcement on July 21, 2022 that the migratory monarch butterfly (Danaus plexippus) is now on its "Red List of Threatened Species as Endangered--threatened by habitat destruction and climate change."
Wrote Garvey:
“The good news? That the iconic monarch landed on the Red List, which means opening safeguards to protect it."
“The bad news? Being on the list means that it's closer to extinction. The other bad news? The U.S. Fish and Wildlife Service, has not yet listed it as endangered or threatened, only that it's a candidate for its list of endangered and threatened wildlife."
“The sad news? The IUCN Red List now includes 147,517 species, of which 41,459 are threatened with extinction."
Garvey launched the Bug Squad on Aug. 6, 2008 and writes it every night, Monday through Friday. The insect blog draws worldwide rankings and accolades.
The ACE winners represent universities or higher institutions of learning in 18 states: Alabama, Arkansas, California, Connecticut, Florida, Georgia, Iowa, Kansas, Kentucky, Louisiana, Mississippi, New Mexico, North Carolina, Oklahoma, Oregon, Tennessee, Virginia and Wyoming. (See list)
- Author: Saoimanu Sope
UC climate-ready landscape trials identify low-water yet attractive plants
Good news: roses can be a part of your water-efficient landscape. Lorence Oki, UC Cooperative Extension environmental horticulture specialist in the UC Davis Department of Plant Sciences, identified rose cultivars that remain aesthetically pleasing with little water.
Oki is the principal investigator of the Climate-Ready Landscape Plants project, which may be the largest irrigation trial in the western U.S., and the UC Plant Landscape Irrigation Trials (UCLPIT), the California component of that project. These projects evaluate landscape plants under varying irrigation levels to determine their optimal performance in regions requiring supplemental summer water.
“There are some assumptions that pretty plants use a lot of water, like roses,” Oki said. “Everyone thinks they need a lot of water, but we've found some that don't, and they still look great. A water-efficient landscape doesn't need to look like a Central Valley oak-grassland in the summer. It can look really attractive.”
In 2021, Oki's team at UC Davis identified Lomandra confertifolia ssp. pallida "Pom Pom" Shorty and Rosa "Sprogreatpink" Brick House® Pink as two of the best low-water plants in the trial.
“The useful tip or information that is shared at the end of each trial is the selection and designation of plants as Blue Ribbon winners. These are the plants that looked good with an overall rating of 4 or higher throughout and were on the low (20%) water treatment,” said Natalie Levy, associate specialist for water resources, who manages the project at the UC ANR South Coast Research and Extension Center.
How plants earn a blue ribbon
Each trial year, the selection of new plants is based on research recommendations and donated submissions from the nursery industry. The landscape plants are trialed in full sun or 50% shade cover.
Irrigation treatments are based on the rate of evaporation and plant transpiration (evapotranspiration) measured through a local California Irrigation Management Information System (CIMIS) weather station that provides a reference evapotranspiration (ETo) rate.
Three levels of irrigation are provided to the plants equal to 20%, 50%, and 80% of ETo. The volume of water applied is the same at each irrigation based on soil characteristics, but the interval between applications varies with weather and the treatment. Using this method, irrigations for the 20% treatment are less frequent than the 80% treatment.
“The 20% treatment during the 2022 trial was irrigated an average of once per month while the 80% treatment was irrigated weekly,” explained Levy.
During the deficit irrigation trial, monthly height and width measurements are taken to determine the plant growth index. Monthly qualitative aesthetic ratings on a scale of 1 to 5 are determined for foliage appearance, flowering abundance, pest tolerance, disease resistance, vigor and overall appearance.
A second round of flowering abundance and overall appearance measurements are also taken to capture more of the blooming period. For example, UCLPIT identified in the 2020 trial at South Coast REC that the "Apricot Drift" rose had a mean overall appearance score of 3.5 out of 5, deeming it “acceptable to very nice” and a low water use plant within the Water Use Classification of Landscape Species or WUCOLS guide.
Project expands options for landscape planting
“(WUCOLS) only has 3,500 plants in it. There are guesses that there are close to 10,000 cultivars in urban landscapes in California, if not more,” said Oki. “WUCOLS also didn't have numerical ratings. Instead, you'll see verbal ratings like ‘low water use' or ‘high water use.'”
The UCLPIT project has not only developed numerical recommendations for irrigation, but it has also added new landscape plants that are compliant with California's Model Water Efficient Landscape Ordinance. In fact, UCLPIT's data is one of the few sources that can be used to supplement WUCOLS.
Geographic diversity of trial sites adds to knowledge base
In addition to UC Davis and South Coast REC in Irvine, the trials have expanded beyond California as the Climate-Ready Landscape Plants project and is in progress at Oregon State University, University of Washington, University of Arizona and Utah State University thanks to a USDA/CDFA grant awarded in 2020.
Lloyd Nackley, associate professor of nursery production and greenhouse management at Oregon State University, is the principal investigator of the trial in the Portland metro area, which is entering its third year.
“People know that there are drought tolerant plants, but there are many. We're trying to highlight lesser known or newer varieties. And even though the trial is three years, most gardeners would hope that their garden lasts longer than that,” said Nackley.
One of the observations that Nackley recalls is of the Hibiscus Purple Pillar plant. Unlike the trial at South Coast, the Purple Pillar did not perform well in Oregon in the spring.
“It wasn't until August that we saw the plant bloom and begin to look like what we saw from South Coast in April,” Nackley said.
Ursula Schuch, horticulture professor and principal investigator of the trial taking place at the University of Arizona, was also surprised at the range of performance among different plant types and the effects of irrigation, heat and temperature.
“This research will reassure green industry professionals that they can stretch their water budget to successfully cultivate more plants, watering them according to their needs instead of irrigating every plant according to the highest water-using plants,” said Schuch.
Although research is only conducted in the West, the hope is that there will be trials in other regions of U.S.
Doing so would yield comprehensive information about the plants and their performance in different climates. As extreme weather events persist in the U.S., disease pressure and risks do too. Trials throughout the country would provide location-specific data regarding disease susceptibility.
To learn more about the UCLPIT research project, visit https://ucanr.edu/sites/UCLPIT/
/h3>/h3>/h3>/h3>- Author: Ann Filmer
A research project initiated in the Department of Plant Sciences at UC Davis evaluates landscape plants in two-year trials under varying irrigation levels to determine the best irrigation level for optimal plant performance in regions requiring supplemental summer water. Creating water budgets is required by California's Model Water Efficient Landscape Ordinance (MWELO), and the results from these research trials help landscape professionals and home gardeners make informed decisions when specifying, selecting or promoting low water-use landscape plant material.
This year, the CDFA/USDA Specialty Crops Multistate Program funded a new Climate Ready Landscape Plants project, which will replicate the successful fields that are currently installed at UC Davis and UC ANR South Coast Research and Extension Center in Irvine.
Loren Oki, UC Cooperative Extension specialist in the UC Davis Department of Plant Sciences, is the lead principal investigator and collaborators include researcher Jared Sisneroz; project leader Karrie Reid, UC Cooperative Extension environmental horticulture advisor in San Joaquin County; and Darren Haver, UC Cooperative Extension water resources and water quality advisor and director of South Coast REC and UCCE in Orange County.
Under Oki's oversight, this new $999,992 grant will support the development of additional fields at several western universities:
- University of Washington, Soo-Hyung Kim
- Oregon State University, Lloyd Nackley and Ryan Contreras
- Utah State University Center, Youping Sun and Larry Rupp
- University of Arizona, Ursula Schuch
Conducting these new experiments on landscape plants at diverse sites across the western U.S. will reveal differences in recommendations since irrigation guidelines for landscapes vary depending on climate and soil type.
The initial project was initiated as Reid's master's degree thesis research in 2004, with Oki as her major professor, and has been ongoing since then.
Project descriptions, results and images can be seen at the UC Landscape Plant Irrigation Trials website at https://ucanr.edu/sites/UCLPIT.