Backyard Orchard News
Manuel Jimenez went from hard-scrabble farmworker to world-renowned farming authority, all while living in and serving his hometown – the small, rural community of Woodlake, Calif. The University of California Cooperative Extension advisor, who worked with small family farmers in Tulare County for 33 years, retired in June.
Jimenez has a storied California heritage. His grandmother was half Chumash Indian; his father an immigrant from Zacatecas, Mexico. The extended family of farmworkers settled in Exeter, where his grandfather, an early labor organizer, planned a strike in the 1950s, long before Cesar Chavez came on the scene. Subsequent hard feelings forced the family to migrate to other areas for work.
“My family was entrenched in farm labor,” Jimenez said. “I had the good fortune to go to college.”
Completing college wasn’t easy. He married his wife Olga right out of high school, and they immediately started a family. Jimenez worked in the fields and Olga in a packing house while they scrambled to find childcare.
Ultimately Jimenez earned a bachelor’s degree in plant sciences at Fresno State University in 1977. Not long after graduation, he was named senior agronomist for the North American Farmers Cooperative, an organization of 300 small-scale vegetable and fruit producers based in Fresno.
“We were responsible for visiting all the farmers twice annually – 600 farm calls a year,” Jimenez said. “I was overwhelmed very quickly, but learned a lot.”
While working for the cooperative, he met Pedro Ilic, then a UC Cooperative Extension advisor in Fresno County, who encouraged him to apply for a new small farm advisor position in Tulare County.
“I was hired in 1980 and have been here ever since,” Jimenez said.
Jimenez was able to make his first mark on the industry by experimenting with a novel pest control strategy for tomato pin worm on cherry tomatoes, the most valuable crop produced on small-scale farms at the time. Growers were making 15 to 20 pesticide applications per season, and the pest developed resistance to the chemical. The heavy pesticide use also killed beneficial insects that keep leaf miner in check. The result was completely defoliated plants that produced nothing.
Working with UCCE specialists at UC Riverside and UC Davis and other UCCE advisors, Jimenez conducted research proving that dispensing a non-toxic insect pheromone was an effective and economical alternative to chemical treatment.
“This research really paid off because it worked on all tomato types,” Jimenez said.
With this success, Jimenez became established as a valuable resource for the agricultural industry and had opportunities to share the research in statewide and international presentations. His primary goal, however, was sharing agricultural advancements with the small-scale growers in Tulare County. He surveyed the clientele, most of whom were Latino, and found they were unlikely to read newsletters or magazine articles to learn about agricultural technology. But they did listen to the radio.
Jimenez established a relationship with Fresno-based KGST “La Mexicana,” one of the oldest radio stations in California, and developed an agriculturally themed morning radio program in Spanish. Later he regularly appeared on a question and answer program, Entrevistas y comentarios, with host Estela Romo. The collaboration lasted 30 years, until Romo retired.
“It was a great way to reach small growers,” Jimenez said. “On the morning show, we gave them market news every week, and then we went into education on agricultural issues we felt were important – food safety, fertility, pest management.”
A difficult time in his career came during the recession of the 1980s when many small-scale producers lost their farms. The number of small farms in Tulare County dropped from 400 to 70.
“It was heart wrenching,” Jimenez said. “Small growers were so deeply in debt, when the tomato industry crashed, they lost their livelihood and way of life.”
Jimenez came to realize that market forces, more than anything else, influenced the success or failure of small farms. He began to look at new market opportunities for profitable small-scale production, and saw blueberries. New Southern highbush varieties were becoming available, and, with technology to acidify the valley’s alkaline soil, he expected it to be fairly easy to grow the healthful and valuable fruit.
In 1998, Jimenez established variety trials at the UC Kearney Agricultural Research and Extension Center. Each year, the planting attracts hundreds of people to the field station for the annual Blueberry Day. New varieties have been added over the years and new production practices researched. In 2012, Jimenez grafted the most common commercial blueberry varieties on the roots of farkleberry plants (Vaccinium arboreum). Farkelberry is a small, stiff-branched evergreen bush that is more tolerant of alkaline soils than blueberries.
The plants are growing well, Jimenez said. The coming years will reveal whether using this technique will improve the economic viability of California blueberry production.
Jimenez’ service to the people in his community is not limited to his work on the job. In 1993, Jimenez and his wife Olga founded Woodlake Pride, a volunteer organization that puts youth to work in innovative beautification projects throughout the community. The program aims to channel the young people’s time and energy into constructive endeavors and keep them out of trouble and street gangs. In time, Woodlake Pride created the 14-acre Bravo Lake Botanical Garden, the first agricultural botanical garden in California.
Jimenez is now working with the City of Woodlake to secure a grant to improve the safety, infrastructure and esthetics of the garden. If the $1 million grant is approved, new restrooms, drinking fountains, and fences will be added to the community park.
For his work both on the job and in Woodlake, Jimenez has received numerous awards. Among them was the first-ever Tom Haller award at the California Farm Conference in 2008. Jimenez was named the 2000 Citizen of the Year in Woodlake. He was one of three recipients of the California Peace Prize in 2011.
After working continuously since he was a youngster, Jimenez is looking forward to traveling around the state of California when he retires.
“I was born here, but I haven’t seen a lot of it. I’ve been too busy working,” Jimenez said.
However, he won’t shirk either his professional or volunteer service. Jimenez plans to work with potential blueberry research successors to maintain the research plot at Kearney, and he is considering invitations from overseas’ companies to share his agronomic and community building expertise to a still wider audience.
Look at the Xylocopa on the Xanthorrhoeaceae. If that sounds like a mouthful, think of the...
Not long after Scott Johnson joined the UC Kearney Agricultural Research and Extension Center academic staff in the early 1980s, he began working with a brand new giant underground weighing lysimeter, an instrument that would become the signature tool of his career. Johnson retired June 30.
For more than a quarter century, Johnson conducted experiments with peach trees growing in the lysimeter, which allowed him to calculate precisely how much water evaporates from the soil and transpires from the tree on an hour-by-hour basis. Results of this research helped growers properly manage their irrigation strategies to improve fruit quality and yield.
A native of Utah, Johnson earned a bachelor’s degree in biology at the University of Utah. He earned a Ph.D. at Cornell in 1982 and that year moved his family to the San Joaquin Valley to begin a 31-year stint as UC Cooperative Extension specialist in the Department of Pomology at UC Davis, based at the Kearney facility in Parlier, Calif.
Using the lysimeter, Johnson discovered that some common fruit tree irrigation strategies being used in the San Joaquin Valley were significantly impacting fruit quality and yield.
“We found that growers should not cut back on water after harvest, if they can help it,” Johnson said. “Anytime we cut back on water applications, we developed some sort of problem – diseases, sunburn, mites and fruit disorders in the subsequent crops, like doubling and deep sutures.”
Despite the importance of the irrigation research, Johnson had perhaps his greatest impact on growers’ practices from his research on nitrogen fertilization. Many growers, he said, were over fertilizing their stone fruit orchards.
“We did a survey and found the average rate of nitrogen fertilization was 150 pounds per acre,” Johnson said.
However, much of that fertilizer stimulated vegetative growth, which shaded the fruit and prevented the desired reddening; and required more pruning in the winter, labor that added to the expense of growing fruit. In addition, the high fertilizer rates caused more problems with fruit quality, insect pests and diseases.
“I started working on this right at the beginning and harped on this same thing my whole career,” Johnson said. “Today, farmers are using about a half or a third of the fertilizer they did decades ago.”
Johnson also worked on understanding fruit trees’ need for other nutrients, such as zinc and calcium.
“It was pretty common for growers to apply zinc every year,” Johnson said. “From research we conducted at Kearney, we learned that orchards don’t need zinc every year. We also compared materials and found the cheapest zinc products work just as well as expensive ones. We’ve saved growers a lot of money with these results.”
Calcium research also helped farmers’ bottom line.
“Save your money,” Johnson said. “Peach trees don’t need calcium. It doesn’t help anything.”
Over the years, Johnson contributed to 70 peer-reviewed journal articles. He was an active contributor to the International Horticulture Society’s meeting proceedings, titled Acta Horticulturae, having authored or co-authored 30 articles.
Johnson worked closely with his colleagues Ted DeJong, UC Cooperative Extension specialist in the Department of Plant Sciences at UC Davis, and Kevin Day, UCCE farm advisor in Tulare County, on these and many other orchard research topics, including rootstocks, pruning, training systems, thinning, girdling, irrigation and fertilization. In 2011, Johnson took a sabbatical leave to organize and aggregate all the research findings on a comprehensive website called The Fruit Report.
“Everything is there on the website for growers establishing and managing fresh market peach, plum and nectarine orchards,” Johnson said.
Johnson has already sold his home in California and has moved back to Utah, where two of his children have settled with their families. The Johnsons will volunteer, travel, garden and, in a year, embark on a humanitarian mission with their church. Johnson has been honored with emeritus status and, though will be living out of the area, has plans to continue work on orchard fertilization management.
“There’s a great deal of interest today in reducing the potential for nitrogen to percolate down to the groundwater,” Johnson said. “You can get some nitrogen into a peach tree by spraying it on the leaves. It doesn’t get to the soil so there is less of a possibility of groundwater contamination. There may be some interest in this idea in the future, particularly in areas where the soil is very sandy or the orchard is near a stream.”
Though Johnson said he had some misgivings about working off campus when he first took the job with the University of California, he leaves with no regrets.
“I loved working at Kearney,” Johnson said. “To me, it turned out to be the ideal job.”
When the University of California decided to provide geospatial support to its scientists at the UC Kearney Agricultural Research and Extension Center in 2000, they tapped Kris Lynn-Patterson, an experienced teacher and information systems technologist, to lay the groundwork. Geographic information systems academic coordinator Lynn-Patterson retired in June.
Lynn-Patterson earned bachelor’s and master’s degrees in geography/climatology at Fresno State University and taught weather, climate landforms and global information systems classes there as a full-time lecturer for five years and part-time at State Center Community College for 10 years.
In 1990, while still teaching part time, she took a new position as a climatologist with a crop insurance firm.
“We were embarking on a brand-new initiative in the crop insurance business using remote sensing and spatial imagery to appraise losses from weather events,” Lynn-Patterson said.
In 2000, she again broke ground by introducing geospatial technologies to agricultural research at Kearney. Geospatial technologies now allow scientists to take a broader view of landscapes than is possible from the field level.
For example, Lynn-Patterson worked with Pete Goodell, UC Cooperative Extension advisor with the Statewide Integrated Pest Management Program, to understand the migration of lygus bugs through the San Joaquin Valley’s mosaic of diverse crops. In the spring, lygus can reproduce in lush vegetation on foothills surrounding the San Joaquin Valley. As the plants dry when the weather warms and rain stops, the lygus begin looking for a new home in valley agriculture, including cotton, which suffers severe economic losses from lygus.
By combining observations made on the ground with GIS mapping technology, Goodell was able to determine the areas in the San Joaquin Valley where cotton is most likely to have lygus problems in mid-summer. Where alfalfa is scarce, cotton fields absorb the migrating bugs. But where alfalfa is close to cotton fields, the alfalfa acts as a lygus sponge and spares cotton most of the damage.
Recently, Lynn-Patterson and her staff, in collaboration with the Citrus Pest and Disease Prevention Program, have been engaged in mapping cropping patterns in the Central Valley citrus belt. This geographic database will provide information needed to ensure quick action when Asian citrus psyllids or huanglongbing disease is found.
Last year, the Kearney GIS program became part of a larger UC Agriculture and Natural Resources statewide program called Informatics and Geographic Information Systems. IGIS is organizing and preparing data pertaining to agriculture and natural ecosystems statewide and making the information accessible on the web.
Lynn-Patterson has a full retirement planned. She is establishing a non-profit animal rescue organization, “Four Feet Inn,” that will connect homeless dogs, horses and other animals with foster families.
“My goal is to find a path to get animals off the street and into no-kill shelters,” Lynn-Patterson said. “I love animals and I love people who want to help animals, so facilitating this connection is what my spirit wants to do.”
Lynn-Patterson is also pursuing a writing career. She has already completed the first novel in a trilogy and begun work on the second. Both of these hobbies she plans to combine via the Internet with travels around the United States and Canada in a motor home.
After a successful tenure as an entomology professor and researcher at the University of Hawaii, Manoa, Marshall W. Johnson added a 10-year capstone to his career as UC Cooperative Extension specialist and research entomologist in the Department of Entomology at UC Riverside, based at the UC Kearney Agricultural Research and Extension Center. He retired at the end of June.
Johnson traces his interest in insects to a visit with a family friend on the outskirts of his hometown, Roanake, Va., when he was 10 years old. He was intrigued by a copy of “A Golden Guide to Familiar American Insects,” and the friend gave it to him. “That’s how I got started,” Johnson said. He never looked back.
Johnson earned bachelor’s and master’s degrees in entomology at North Carolina State University and in 1974 completed a Ph.D. in entomology at UC Riverside. After conducting short stints of entomological research at two locations on the mainland, he moved to Hawaii in 1983 to serve as a professor and focus his research on biological control.
In Hawaii watermelon production, Johnson was able to help farmers reduce pesticide use by 90 percent by showing that pesticide applications were killing natural enemies of a Liriomyza leafminer pest they were trying to control. He also worked on biological control of pests on cucumbers, tomatoes, green onions, pineapple, papaya and coffee.
In 1995, Johnson took a six-month sabbatical leave to UC Davis and realized how much he missed living on the mainland. He started looking for a new job and eventually was offered the combined extension and research position at his alma mater, UC Riverside, based at the off-campus research center in Parlier, Calif.
Johnson’s arrival coincided with the introduction of olive fruit fly in California, a serious pest that has devastated olive production in the Mediterranean region for more than 2,000 years. Olive fruit fly was detected in Los Angeles in 1998, and by 1999 had made its way into the San Joaquin Valley, the leading producer of the state’s olives.
To the great relief of valley olive growers, Johnson and his biological control colleague Kent Daane, UCCE specialist in the Department of Environmental Science, Policy and Management at UC Berkeley, found that hot summertime temperatures in the valley depress olive fly populations. But that didn’t provide a statewide solution.
Johnson and Daane worked together to introduce exotic natural enemies of the pest from Africa. The beneficial insects have been released from quarantine and introduced at several locations in California, with recovery of one species in the San Luis Obispo and Redwood City areas.
“We think it’s on the way to establishment. That’s a good sign,” Johnson said. “Now we're waiting to see if the parasite’s presence will have an impact on olive fly populations.”
Johnson was also involved in research that showed the Central Valley isn’t as hospitable to glassy-winged sharpshooters as other parts of the state. When it gets very cold, GWSS cannot move or feed. They either starve or get dehydrated.
“About every 2 out of 10 years, it gets cold enough in the valley that glassy-winged sharpshooter populations are reduced 90 to 95 percent,” Johnson said. “It is unlikely glassy-winged sharpshooters would ever become well established in the Sacramento Valley or the northern San Joaquin Valley. But it is well established in the Bakersfield area.”
Johnson ended his career with a video production project designed to raise awareness about integrated pest management. Posted on the website Extending Orchard IPM Knowledge in California, the videos include interviews with IPM practitioners, researchers and farmers plus overviews of specific pest control techniques, such as biological control, cultural practices and pheromones.
For his research and extension efforts, Johnson received numerous awards and honors over the years. Most recently, he was named “Distinguished Scientist of the Year,” by the International Organization for Biological Control. He is an elected fellow of both the Entomological Society of America and the American Association for the Advancement of Science. He was author or co-author of more than 200 peer-reviewed articles, book chapters, and extension publications.
During retirement, Johnson plans to spend more time pursuing the art of photography, mainly landscapes and seascapes, which he captures during travels around the United States. Johnson also plans to continue cataloging the history of the family of his mother, whose maiden name was “Marshall.” He has already traced his lineage back to a 1729 immigrant from Ireland. An earlier ancestor, a member of the provincial council in Pennsylvania, was governor for one day when William Penn was absent from the colony, Johnson said.