Posts Tagged: Avocados
Partnership with Esperanza Education Center provides blueprint for other adult transition programs
For students at Esperanza Education Center, an adult transition program serving students with disabilities in south Orange County, there was something deeply satisfying about handpicking 2,000 pounds of avocados.
“There's a tangible, visual element where you're like, ‘Wow, I did that – I did it, I can see it, I can feel it in my bones and my muscles,'” said Ray Bueche, principal of the school in Mission Viejo, within the Saddleback Valley Unified School District. “There's a real sense of accomplishment that you're seeing in some of these students.”
Ranging in age from 18 to 22, the students are in an adult education program that helps advance their independent living skills and prepare them for meaningful work and careers. They are able to experience the thrill of the harvest – and a variety of other farming activities – through the school's innovative partnership with UC South Coast Research and Extension Center, a UC Agriculture and Natural Resources facility that supports researchers and delivers outreach and education programs.
Given UC ANR's emphasis on workforce development, Jason Suppes, a community education specialist at South Coast REC, contacted Bueche in 2019 about a potential collaboration. While Esperanza has many partnerships with retail stores and nonprofits that give students invaluable work experiences, none of them offer the farm environment that South Coast REC could provide.
“Part of developing [our students] is getting a wide range of opportunities in a variety of vocational areas,” Bueche explained. “Agriculture is one that's very hard for us to find.”
Program ‘wildly successful' from beginning
Unlike other job sites that bring the students in less frequently, South Coast REC committed to hosting the young people every week for three hours (COVID-19 measures permitting), with Suppes and colleague Tammy Majcherek leading them in planting, weeding, maintenance, harvesting and more.
“We can provide opportunities for students to learn skills that could help them potentially find employment in a garden center, in a nursery, at landscapers,” Suppes said. “The program was wildly successful out of the gate.”
Mike Seyler, an Esperanza teacher who accompanies the students to South Coast REC, has seen firsthand the positive impacts of the partnership. He said one student – who at first balked at the idea of being outside, getting dirty and performing physical labor – eventually grew to like the work and took great pride in pulling carrots from the ground and sharing them with his family.
“To physically actually ‘see' the work you did – they don't always get to do that,” Seyler said. “It was cool to see someone, who didn't necessarily like being outdoors, really enjoy it now.”
The change of pace – and place – was especially beneficial for one young woman at Esperanza. Bueche said the nature of the work and the setting helped the student grow socially, as she relished the teamwork and camaraderie needed to accomplish their goals on the farm.
“We really saw a different person come out through her experiences there – she felt more self-confident; she was more personable with people; she was talking more,” said Bueche, who added that she has leveraged the skills she gained into a paid work-based learning experience with a local retailer.
Students bring produce to school, community
All students benefit from Esperanza's partnership with South Coast REC, as surplus produce from the center's fields is donated to make healthy school lunches. In addition, students use REC-grown fruits and vegetables at their monthly pop-up restaurant, where they hone skills in preparing and serving a three-course meal.
Their peers, who harvested the produce, derive immense satisfaction from seeing the fruits of their labor go directly to the school.
“They're able to enjoy eating the stuff that they're working for,” Seyler said. “And then they see everyone else enjoying it, and I think that really translates well for these guys.”
The students also played a prominent role in an avocado sale last summer, for which they picked 2,000 pounds of produce, bagged the fruit in 10-pound bags and then distributed preorders to the public from a stand at South Coast REC. Proceeds from the event were used to purchase farm tools, shirts and other gear.
“It was an incredible success – everyone loved the avocados,” Bueche said. “The students loved it; the parents came out; community members supported it.”
Those successes illustrate the power of a strong partnership; the South Coast REC team, in fact, received the school's “Community Partner of the Year” Award for 2020-21, for persevering through the pandemic to deliver the beneficial programs for students.
Over the last two years, Suppes and Bueche – through a lot of creativity and some trial and error – have sketched a roadmap for growing productive relationships between similar organizations and adult transition programs. And after presenting those results to colleagues, other local school districts and nonprofits such as Goodwill and My Day Counts have contacted South Coast REC to provide similar experiences for community members./h3>/h3>/h2>
Growers considering producing avocados in San Diego County with high-density plantings now have help to determine the economic feasibility. A new study on the costs and returns of establishing and producing avocados in San Diego County has been released by UC Agriculture and Natural Resources' Cooperative Extension, UC Agricultural Issues Center and the UC Davis Department of Agricultural and Resource Economics.
Avocado has been one of the prominent crops produced in Southern California since the early 1950s. California avocado production peaked in 1987-88 with about 76,300 acres. San Diego had been the leading producer accounting for about 60% of the acreage.
“Beginning in the early 1980s, there has been a continuous decline of acreage and production of avocados in San Diego County, said Etaferahu Takele, UC Cooperative Extension farm management advisor for Southern California and co-author of the study. “This is mainly because of the expansion of urban development that has increased the cost of producing the crop and especially the cost of water, reaching to up to $2,000 per acre feet in 2020.”
High-density planting increases profitability of avocado production given there is suitable land for high-density orchard development.
Although the cost of water accounts for 44% of the total production cost in the high-density planting, the water cost is proportionally less than in the conventional planting of 145 trees per acre when distributed over a higher yield per acre, the authors write.
Their cost analysis describes production operations for avocados planted at 430 trees per acre, with an expected life span of 40 years. The study includes a detailed summary of costs and returns and a profitability analysis of gross margin, economic profit and a break-even ranging analysis table, which shows profits over a range of prices and yields. Growers can identify their gross margin and returns to management based on their yield and prices received.
Input and reviews were provided by a UC Cooperative Extension farm advisor and grower cooperators in San Diego County. The authors describe the assumptions used to identify current costs for avocado establishment and production, material inputs, cash and non-cash overhead.
The new study, “Avocado Establishment and Production Costs and Profitability Analysis in High Density Planting, San Diego County-2020,” can be downloaded for free from the UC Davis Department of Agricultural and Resource Economics website at http://coststudies.ucdavis.edu and UCCE Riverside County Farm Management website at https://ucanr.edu/sites/Farm_Management/Costs_and_Returns. Sample cost of production studies for many other commodities are also available on the websites.
For additional information or an explanation of the calculations used in the studies, refer to the “Assumptions” section of the report or contact Takele at (951) 683-6491 Ext. 243 or firstname.lastname@example.org or Donald Stewart at the UC Agricultural Issues Center at email@example.com.
A group of trained and dedicated volunteers have been tasting avocado samples at the UC Kearney Agricultural Research and Extension Center in Parlier to determine whether the GEM avocado variety can stand up to the tried-and-true Hass in grocery stores, reported Dale Yurong on ABC 30 Action News.
Yurong visited the sensory lab at Kearney where nine tasters have been meeting for months to help inform UC and USDA research that may enable commercial production of avocados in the San Joaquin Valley, an area believed to be unsuitable because of hot summers and cold winters.
The panellists identify avocado characteristics like nutty, stringy and buttery. "You're getting into the texture, you're getting into a lot of different nuances of flavor," said taster Shannon Aguilar.
GEM avocados grow on smaller trees than Hass and GEM has a tear-drop shape, while Hass is more pear-shaped. But the real test will be comparable flavor and tolerance to valley conditions.
"We believe it has a little more heat tolerance and a little more cold tolerance," said UC Cooperative Extension specialist Mary Lu Arpaia.
The GEM may give local farmers a new crop option. One has already planted two acres of GEM.
"It's something that we probably need in this area. Something we can do and we wouldn't have to import it from other parts of the country or the world," said Marvin Flores, environmental health and safety specialist at Kearney and a member of the avocado taste panel.
California avocados are the best in the world. So says downtown restaurant manager Daniel Avalos in a Valley Public Radio story by reporter Ezra David Romero.
The fact that they currently thrive only on a small swath of coastal Southern California is being challenged by UC Cooperative Extension specialist Mary Lu Arpaia. She is on a mission to find avocado varieties that withstand the hot summers and cold winters of the San Joaquin Valley, where irrigation water and crop land are more abundant and cheaper.
She hopes to find avocado varieties that ripen at various times of year, and varieties that might be an alternative crop for citrus growers should huanglongbing, a disease that has devastated the Florida citrus crop, take hold in Central California.
"There's a void of California fruit on the market in the months of November, December and actually early January," Arpaia said. "So if we can find different selections that maybe are unique that fit into that window, then we help the entire California avocado industry."
Romero visited the UC Lindcove Research and Extension Center to see the trees in Arpaia's study. Currently, the vast majority of California avocados are the Hass variety. The goal is to breed varieties with similar eating quality that grow to a moderate height and have high yield. One potential that is already being produced by nurseries is called "gem."
"This is gem," said Eric Focht, a staff research associate in Arpaia's lab. "You can see it's a little more oval or egg shaped than Hass. It has the speckling on the skin. Now as this ripens, it will turn dark and a lot of times the speckled lenticels with get a yellow kind of golden color it it."
Another promising variety is called "lunchbox" because of its small size. According to Focht, it "just falls out of the skin." Arpaia said, "It makes wonderful guacamole and I found, with a non-replicated test in my refrigerator, the fruit doesn't brown."
Arpaia's favorite guacamole recipe is featured at the end of the story on the KVPR website.
Dedicated growers and research support from the University of California have made avocados a California success story. As part of the UC Global Food Initiative, which is channeling UC resources toward sustainably feeding the world's growing population, the California avocado experience can help alleviate food insecurity and poverty overseas.
Two UC Cooperative Extension specialists found a way to do that in Tanzania, Africa, where 69 percent of the population live below the poverty line and 16 percent of children under 5 are malnourished. In March 2017, UCCE biocontrol specialist Mark Hoddle and UCCE subtropical crops specialist Mary Lu Arpaia traveled to the east African nation to help growers there with their fledgling avocado industry.
In the late 19th Century, German missionaries introduced avocados to Tanzania when it was colonized by this European nation. Germany lost influence over the African country following World War I, but huge non-commercial avocado trees still thrive in the landscape.
Recently, attempts at commercial production growing the popular Hass variety are gaining momentum.
With proximity to a European market hungry for fresh avocados, Rungwe Avocado Company planted 250 acres of the Hass variety in the southern highlands around Mbeya near Lake Malawi, which establishes the border of south western Tanzania with Zambia and Malawi. In order to grow production to a level that would make the export to Europe practical and to support rural residents with a viable business option, approximately 3,700 small landholder farmers, known as outgrowers, were recruited to grow avocados. They manage small plots with as few as 20 trees to larger acreage with more than 200 trees, with participating farms ranging in elevation from 1,200 to nearly 6,000 feet.
However, this fledgling industry is experiencing production challenges, prompting the company to contact UC Cooperative Extension. UC faculty, specialists and advisors have conducted research on Hass avocados for decades in California and worked closely with growers to extend information that has supported the development of an industry with high-yielding trees producing premium fruit valued at more than $400 million per year.
“One of the aims of the Global Food Initiative is to deploy UC's best research and extension practices to address the key challenge of improving food production,” Arpaia said. “That's why we went to Tanzania.”
Hoddle and Arpaia visited growers, extension technicians, packing house managers and logistics experts. They identified production, pest management and fruit handling challenges faced by the avocado industry.
“The situation in Tanzania is quite different than California, and also different compared to Central and South America, where we have also worked on avocado production issues,” Hoddle said. “But we identified familiar issues that affect management for which there are solutions.”
Hoddle examined the Tanzanian avocado trees and fruit, and collected insect specimens. He said the insect damage was minimal at the time of the week long visit.
“That surprised me because of the insect biodiversity in Africa,” he said. “There was little evidence of heavy leaf feeding. There was some evidence of fruit damage caused by insect feeding on the skin, but they don't seem to have fruit boring weevils or caterpillars that we commonly see in parts of Mexico, Central and South America.”
A critical issue is extending entomological information to the outlying farmers to improve their ability to identify and manage beneficial insects and crop pests.
“They don't have the magnifying loops, collecting vials and insect boxes that we regularly use for insect identification,” Hoddle said. “I showed them my Leatherman tool, which can be used to open up fruit and look for damage. They need these basic tools.”
A post-harvest expert, Arpaia was able to identify ways to improve picking, handling, storage and shipping practices that would result in top quality fruit arrival in Europe.
The two scientists produced a report, which emphasized the need to provide outlying growers with basic equipment and agronomic information.
“We want to help them be better avocado farmers so the crop can be a greater contributor to the country's economy,” Arpaia said. “Boosting this industry will also give people all over Tanzania the opportunity to add nutritious avocados to their diets.”