California Fruit and Vegetable

Tag: California Fresh Fruit Magazine

  • California Citrus Acreage Report: Increase in Lemons & Mandarins

    The Pacific Regional Office of the USDA’s National Agricultural Statistics Service (NASS) conducts an acreage survey of California citrus growers as funding is available. The purpose of this survey is to provide bi-annual citrus acreage, which includes information on new plantings and removals. It is the continuation of a long series of industry-funded Citrus Acreage surveys.

    Users are cautioned that this report consists of two parts:

    – Table 1 shows estimated statewide bearing acreage for the 2017-18, 2018-19, and 2019-20 seasons.

    -Tables 2, 3, and 4 show detailed acreage data by type, variety, and year planted — as voluntarily reported by citrus growers and maintained in NASS’ database.

    With perfect information, the estimated statewide bearing acreage and the detailed acreage data would be the same. Generally, this will not be the case for the following reasons:

    -A voluntary survey of approximately 5,400 citrus growers is unlikely to ever attain 100 percent completeness.

    -It is difficult for USDA/NASS to detect growers who are planting citrus for the first time. 

    PROCEDURES

    The major source of the citrus detailed acreage data was a questionnaire mailed to all citrus growers currently on NASS’ database. The mailing was made in January 2020 to approximately 5,400 citrus growers. The questionnaire contained previously reported crop, variety, and acreage information preprinted. Producers were asked to update the information with new plantings, removals, and any other corrections; and new growers were mailed a blank questionnaire. Growers were given about eight weeks to respond by mail. A telephone follow-up was then undertaken. Field personnel were unable to personally visit large growers who did not respond by mail because of social distancing requirements that have been in effect since March 2020.

    To arrive at the estimated statewide bearing acreage, the NASS citrus acreage database was compared with pesticide application data maintained by County Agricultural Commissioners and the Department of Pesticide Regulation.

    ACKNOWLEDGMENTS

    Thank you to the many orchard operators, owners, and management firms that provided their acreage information. Funding for the survey was provided by the California Citrus industry.

  • Managing Heat In California Avocado Groves

    California Avocado Commission — According to a new report released by the California Department of Food and Agriculture (CDFA) and the Climate Science Alliance, Southern California agricultural regions will face more climate extremes — notably higher daily maximum temperatures and more frequent and intense heat events — in the coming decades. As Dr. Ben Faber notes in a recent blog post, although avocado groves have been successful in California, the trees are “poorly adapted to high temperatures and low humidity.” Therefore, avocado growers throughout the state should be aware of the impacts of heat on their trees.

    Avocado trees cool themselves by moving water through the roots and out their leaves through leaf pores known as stomates. As the water evaporates from the leaves, it helps maintain leaf temperature as well as prevent the trunk and branches from overheating. During a heat wave, an avocado tree tends to close its stomates to prevent excess water loss, which results in the leaf temperature increasing. In extreme circumstances, the leaves and stems can overheat and literally cook.

    California avocado varieties have different sensitivities to heat. While ‘Pinkerton’, ‘Lamb Hass’ and ‘Reed’ varieties are less susceptible to heat, ‘Hass’ and ‘Fuerte’ are most sensitive; and ‘Sir-Prize’ and ‘Sharwil’ tend to be somewhere in the middle.

    Protection Measures

    The timing of heat waves in California tends to coincide with peak season — when trees are producing their summer flush. When the temperatures is 100˚F or above, the trees tend to drop their fruit and flowers, thus excessive heat can impact the following year’s bloom.

    Well-watered trees will better tolerate the stresses imposed by a heat wave. Thus, growers should irrigate their trees in advance of a heat wave to ensure they are fully hydrated. Apply an additional 50% of the budgeted amount of water. If the heat wave lasts for several days, be certain to provide daily pulses of irrigation.

    Because avocado roots grow near the surface of the soil, mulch also helps trees manage heat by keeping the soil (and roots) cool.

    Cover crops also can aid in keeping groves cool. The cover crop can prevent water runoff, improve water retention in the soil, lower the air temperature in the grove and keep the soil cool.  In addition, cover crops will help improve soil structure, suppress weeds, increase soil organic matter and provide a home to beneficial pollinators and insects.

    Harvest During a Heat Wave

    Best practice is to make every attempt to wait and harvest fruit when the temperature is below 90˚F. No fruit should be harvested when the temperature is above 95˚F.

    When fruit is harvested during warmer temperatures, place the field bins in the shade to avoid exposing the harvested fruit to sunburn.  If fruit is left exposed to direct sunlight, the sunburn will only show up after it has been packed. Bins should be covered with bin covers or light-colored tarps. And bins should be sent to the packinghouse promptly to avoid decreased fruit quality caused by water loss.

    Heat Damage

    If you see significant leaf drop in your groves due to excessive heat, the following actions are recommended:

    • As soon as possible, whitewash branches exposed to the sun with special attention paid to branches on the west and south sides of the tree.
    • Trees that lose a significant portion of leaves cannot efficiently move water, therefore restrict irrigation amounts to ensure you avoid creating wet, soggy conditions that can lead to root rot. It’s best to irrigate less frequently and with smaller amounts of water.
    • Do not prune your trees — leave hanging leaves in place to protect the tree from sunburn. Once new tree growth has occurred (in the next 3 – 6 months), pruning can take place on living wood.
    • Adjust fertilization as you would with a frost-damaged tree: reducing the amount of fertilizer until the tree is re-established. If you see signs of a particular nutrient deficiency, adjust fertilization accordingly.

    For more information about managing heat in avocado groves, growers can view the following articles on the California avocado growers’ website:

  • CA Navel Orange Forecast Down 5%

    The initial 2020-21 Navel orange forecast is 84.0 million cartons, down 5 percent from the previous year. Of the total Navel orange forecast, 81.0 million cartons are estimated to be in the Central Valley. Cara Cara variety Navel orange production in the Central Valley is forecast at 7.0 million cartons. These forecasts are based on the results of the 2020-21 Navel Orange Objective Measurement (O.M.) Survey, which was conducted from June 15 to September 1, 2020. Estimated fruit set per tree, fruit diameter, trees per acre, bearing acreage, and oranges per box were used in the statistical models estimating production.

    This forecast includes production of conventional, organic, and specialty Navel oranges (including Cara Cara and Blood orange varieties).

    Survey data indicated a fruit set per tree of 319, unchanged from the previous year but b e l o w the five-year average of 363. The average September 1 diameter was 2.198 inches, below the five-year average of 2.218 inches. The Cara Cara orange set was 251 with a diameter of 2.232 inches.

    SURVEY SAMPLE

    A sample of 785 Navel orange groves was randomly selected proportional to county and variety bearing acreage, and 733 of the groves were utilized in this survey. Once a grove was randomly chosen and grower permission was granted, two trees were randomly selected. The Navel orange sample included conventional, organic, Cara Cara, and Blood orange groves.

    For each randomly selected tree, the trunk was measured along with all connected branches. A random number table was then used to select a branch, and then all connected branches from the randomly-selected branch were measured.

    This process was repeated until a branch was reached with no significant limbs beyond t h i s p o i n t . This randomly-selected branch, called the terminal branch, was then closely inspected to count all fruit connected to this branch, as well as all of the fruit along the path from the trunk to the terminal branch. Since each selected path has a probability of selection associated with t h e p a t h , a probability-based method was then applied to estimate a fruit count for the entire tree.

    In the last week of the survey period, fruit diameter measurements were made on the right quadrant of four trees surrounding the two trees of every third grove. These measurements were used to estimate an average fruit diameter per tree. Of the 733 utilized groves, 11 were in Madera County, 125 were in Fresno County, 436 were in Tulare County, and 161 were in Kern County.

    SURVEY HISTORY

    A Navel Orange Objective Measurement Survey has been conducted in the Central Valley every year since the 1984-85 crop year, except for the 1991-92 season due to a lack of funding. The data from the first two years were used for research purposes in developing crop-estimating models. The Cara Cara forecast was undertaken at the request of the California Citrus Advisory Committee. 

     

  • CA Citrus Mutual Commends Actions Regarding Seasonal & Perishable Products

    California Citrus Mutual commends the Office of the U.S. Trade Representative (USTR), U.S. Department of Agriculture (USDA), and U.S. Department of Commerce (DOC) for the actions they recently announced to address the injury caused by increased imports of seasonal and perishable products. Low-priced imports have previously caused a substantial market disruption for the California citrus industry during its marketing season. We are encouraged by both the Administration’s plan and its determination to bring relief to fruit and vegetable growers who are suffering from similar import issues.

    The trade remedy steps announced include the self-initiation of Section 201 global safeguard action on certain imports, USTR’s coordination with specific sectors to monitor and investigate imports under the Section 201 provisions covering perishable agricultural products and citrus products, DOC’s coordination with effected sectors on possible self-initiated antidumping and countervailing duty actions, and the Administration’s indication that still other actions and investigations may be taken. These steps are essential safeguarding and supporting all U.S. fruit and vegetable growers harmed by this problem.

    In 2017, low-priced citrus imports from the Southern Hemisphere increased 40% over the prior year’s shipments, causing significant price declines and harm to California growers. Consistent with last week’s announcement, California Citrus Mutual will closely monitor imports in the coming California season and continue to coordinate with the U.S. Government regarding any import surges, unfair import practices, and injury to our citrus growers.

    About California Citrus Mutual (CCM)

    CCM is a voluntary, non-profit trade association representing CA citrus growers on the economic, regulatory, and political issues that impact them most.

  • California Table Olive Forecast Down Significantly

    The 2020 California table olive forecast is 30,000 tons, down considerably from last year’s crop of 89,400 tons, according to a survey conducted by the USDA, National Agricultural Statistics Service, Pacific Regional Office. Bearing acreage is estimated at 15,500, which results in a yield of 1.94 tons per acre.

    The Manzanillo production forecast is 25,500 tons, Sevillano production forecast is 4,000 tons, and other varieties are expected to total 500 tons.

    High heat and winds during bloom caused a poor set for California table olives. Labor costs and marketing remains an issue for California olives growers, with many uncertain how much of their crop will be economical to harvest.

    SURVEY SAMPLE

    There were 317 growers sampled for the survey. Reports from 165 were used to establish this forecast. The sample is designed to provide a State estimate of all varieties; estimates by variety are less precise. 

  • CA Prune Board Sees High-Quality Fruit in Short Crop Year

    The California Prune harvest wrapped up on schedule this year and growers have worked through the challenges of wildfires and market disruptions caused by the pandemic to harvest premium quality fruit consisting of an optimum range of sizes,setting up excellent opportunities to market the sweet, larger prunes for which California is famous. With early industry projections of a short crop, growers and handlers can now estimate production of 45,000 metric tons (50,000 short tons) of California Prunes, a decrease of 37% from the previous year.  Combined with the carry-in from 2019, handlers should have sufficient supply for the new selling season.

    As markets globally adjust to a “new normal” the California Prune industry remains focused on maintaining balance of supply and demand and reliably delivering the premium fruit that the world expects. Prune growers in California play an essential role in producing a premium product that offers health benefits, great taste, versatility, and shelf stability, all vital to what consumers desire in the current environment.

    Data reported to growers and handlers at the recent conclusion of the 2019 crop year (July 31, 2020) underscored consumer desire for California’s best-in-class prunes, as shipments to export markets jumped 17% and domestic shipments improved by 12%, as compared to the previous year.

    “While the pandemic has fueled consumers’ focus on healthy foods, the California Prune industry regularly promotes the nutritional profile and invests in nutrition research that elevates the health benefits of prunes,” said Donn Zea, Executive Director of the California Prune Board. “We are grateful that so many consumers have chosen California Prunes during this time. We plan on doing everything we can to earn and keep their trust.”

    California is the largest producer of prunes, producing about 40 percent of the world’s supply, bringing quality prunes to market from 40,000 acres concentrated in the Sacramento and San Joaquin Valleys.

    ABOUT THE CALIFORNIA PRUNE BOARD

    Created in 1952, The California Prune Board aims to amplify the premium positioning and top-of-mind awareness of California Prunes through advertising, public relations, promotion, nutrition research, production research, and issues management. The California Prune Board represents approximately 800 prune growers and 28 prune, juice, and ingredient handlers under the authority of the California Secretary of Food and Agriculture.

  • Automation Helps Solve Specialty Crop Challenges

    With support from the National Institute of Food and Agriculture’s Multistate Research Fund, researchers at 17 land-grant universities are working together to develop automated systems that work well for labor-intensive specialty crops like fruits, vegetables, tree nuts, and nursery plants. A multi-state collaborative approach lifts the burden of research and development from a single specialty crop sector and spurs major advances.

    Automation is helping the specialty crop industry overcome labor shortages, fine-tune management decisions, conserve resources and meet growing demand. Consistent with the USDA Agriculture Innovation Agenda, advances in technology for growing, harvesting, handling, and processing are generating significant savings for growers and consumers, while improving sustainability.

    University of Florida scientists developed a robot that counts and maps the fruit on citrus trees, and University of California-Davis researchers developed fruit-picking carts with instruments that map orchard fruits. These automated devices have helped farmers see if and where production issues arise, so they can make targeted, effective management decisions. Accurate yield estimates are also important for programming harvest machines and making marketing decisions.

    Automated disease detection and management technologies could mitigate crop losses. For example, Iowa State University scientists are guiding the manufacturing of technology that reduces pesticide drift. Washington State University scientists developed drones to deter birds that eat and damage fruit crops. And, handheld devices designed by University of Hawaii researchers give coffee growers an inexpensive way to spot leaf water stress and optimize irrigation.

    To overcome labor shortages and cut labor costs, Washington State University scientists designed a robotic twining machine for hops, and University of Georgia researchers are perfecting affordable automated technologies for efficient blueberry harvest. A new pruning method recommended by Pennsylvania State University Extension could cut pruning time by 42% and save $136 per acre. Automation can also make labor less dangerous. For example, a harvest-assist device designed at Penn State eliminated ladder falls and reduced the time apple pickers spent in awkward, dangerous postures from 65% to 43% of picking time.

    Automation won’t soon replace the keen eye of talented growers, but these technologies will reduce costs, improve quality, and ensure consumer satisfaction, while eliminating some on-farm health risks, increasing efficiency, and reducing environmental impacts.

    Learn more about this USDA-NIFA funded project: W2009: Integrated Systems Research and Development in Automation and Sensor for Sustainability of Specialty Crops(link is external) (2013-2018). Learn more about NIFA Impacts.

    This research supports the “value-added innovation” theme outlined in the USDA Science Blueprint and moves us closer to meeting the goals outlined in USDA’s Agriculture Innovation Agenda. Learn more about The Hatch Act of 1887 (NIFA’s Multistate Research Fund).

    Advances in technology, automation, and remote sensing is a cross-cutting, macro movement in science impacting agriculture outlined in the USDA Science Blueprint (PDF, 2.6 MB). The Science Blueprint guides USDA’s science priorities for the next 5 years, building from past success. Relative to other crops, many specialty crops are more dependent on agricultural labor for production, harvesting, and processing. This is part of a blog series that highlights research investments to advance automation and mechanization for specialty crops. — By Sara Delheimer, NIFA-funded Multistate Research Fund Impacts Program

  • California Avocado Commission Virtual Field Day, Sept. 17

    On September 17th from 3:30pm – 5:00pm the California Avocado Commission will host a virtual field day concerning Avocado Branch Canker disease that will consist of two 30-minute presentations by Dr. Themis Michailides, University of California Kearney Agricultural Center and Dr. Liz Dann, University of Queensland, followed by a question-and-answer session. Registration for the virtual event is now open.

    Dr. Themis Michailides, Professor of Plant Pathology, is one of the world’s leading experts on this group of fungi. He has been working on a CAC-funded project since October 2018 to determine exactly what pathogens cause avocado brank canker in California, the extent of their presence in California avocado groves and how they can be managed. He will present his research results to date and discuss why he believes this group of pathogens has become problematic in recent years.

    Dr. Liz Dann is a Principal Research Fellow with the Queensland Alliance for Agriculture and Food Innovation at the University of Queensland, Australia. She has worked extensively on avocado diseases in Australia and has recently started studying the role of the Botryoshpaeriaceae in flower blight of avocados in Australia. She will share her knowledge of these pathogens with growers and the impacts they have on avocado production in Australia.

    Date: September 17, 2020
    Time: 3:30pm – 5:00pm
    Location: Online Webinar

  • Fall CRB Citrus Webinar Series

    The Citrus Research Board (CRB) in coordination with the University of California Statewide Integrated Pest Management Program (UC IPM) is rolling out a new CRB Webinar Series, geared toward citrus growers and industry professionals. 

    The series will kick-off on Tuesday, September 29, 2020, with Dr. Roger Baldwin of UC Davis presenting “Control of Vertebrate Pests in Citrus”. Dr. Roger Baldwin will discuss how to manage vertebrate pests including ground squirrels, pocket gophers, voles and roof rats in citrus orchards. The presentation will cover a variety of IPM management tools including biocontrol, repellents, habitat modification, trapping, rodenticides and burrow fumigants.

    This webinar is currently pending approval for 1-hour of “Other” continuing education units from the California Department of Pesticide Regulation (CDPR) and 1-hour of “IPM” credits from the Certified Crop Adviser (CCA).

    To qualify for continuing education units, please use the following list of instructions:

    1Register and login separately with your own email address

    2Participate in the entire hour webinar session

    3Respond to the polls/knowledge checks as they come up

    4 (If the polls do not work properly on your device, use chat to submit your answers.)

    5Respond to the final survey at the end of the webinar session – please include your name, license number and email address

    Make sure you mark your calendars for the rest of the talks in the series.

    2020 Webinar Series Schedule

    Tuesday, September 29, 2020 

    Topic: Control of Vertebrate Pests in Citrus 

    Speaker: Roger Baldwin, Ph.D., UC Davis

    Continuing Education Units:  

    1-hour of “Other” from CDPR and

    1-hour of “IPM” from CCA are Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. BALDWIN’S WEBINAR

    Thursday, October 8, 2020 

    Topic: Asian Citrus Psyllid Detection and IPM Strategies

    Speaker: Monique Rivera, Ph.D., UC Riverside

    Continuing Education Units:  

    CDPR and CCA Hours Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. RIVERA’S WEBINAR

    Thursday, October 22, 2020

    Topic: Pre-and Post-Harvest Diseases in Citrus

    Speaker: James Adaskaveg, Ph.D., UC Riverside

    Continuing Education Units:  

    CDPR and CCA Hours Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. ADASKAVEG’S WEBINAR

     

    Wednesday, November 4, 2020

    Topic: Citrus Root Health

    Speaker: Ashraf El-kereamy, Ph.D., UC Riverside

    Continuing Education Units:  

    CDPR and CCA Hours Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. El-KEREAMY’S WEBINAR

     

    For more information, please contact 

    Petr Kosina, with UC IPM, at pkosina@ucanr.edu

  • Request for Research Proposals to Support and Enhance Honey Bee Health

    Scientific research provides us with the foundation of knowledge we rely on in order to understand honey bee health threats and address them.

    Project Apis m. and the National Honey Board are requesting research proposals to support and enhance honey bee health. Proposals will be accepted between September 1, 2020 and September 30, 2020. Please visit www.ProjectApism.org/rfps to view the full RFP. PAm and NHB supported research projects can be explored in detail at the Bee Health Collective.

    In June, 2016 Project Apis m. (PAm) and the National Honey Board (NHB) announced that PAm would begin administering the NHB Production Research funds. This collaboration has streamlined efforts to support the beekeeping industry, by connecting the NHB research funding opportunities with several other efforts coordinated by PAm. This collaboration allows opportunities to consider a broader spectrum of efforts linked to supporting the industry, to support collaborations and synergy, and harmonize and access deeper resources when necessary for projects that need larger time or money commitments. Merging efforts has also resulted in one less round of work for all of our hardworking bee researchers who write proposals, the scientific reviewers who read them, and selection committees and administrators who see these processes through.

    The National Honey Board (NHB) is an industry-funded agriculture promotion group that educates consumers about the benefits and uses of honey and honey products. NHB research, marketing and promotional programs are funded by an assessment on domestic and imported honey and are designed to increase awareness and usage of honey by consumers, the foodservice industry and food manufacturers. For more information please visit www.honey.com.

    Project Apis m. (PAm) is the go-to organization at the interface of honey bees and pollinated crops. Since 2006, we’ve infused over $8.5 million into honey bee research and $2.9 million into forage programs, resulting in better pollination and increased crop yields for growers, and lower losses and better honey production for beekeepers. We work closely with commercial beekeepers, growers, and top bee scientists in the USA and Canada to fund projects and direct strategic efforts focused on practical solutions. PAm funds studies, offers graduate scholarships to encourage careers in pursuit of science-based solutions to honey bee challenges, and has expanding efforts to put forage on the landscape where bees need it most. We are a 501(c)5 nonprofit organization governed by an eleven-member board of stakeholders representing major national and state industry organizations, and an additional seven-member Science Advisory Board. Learn more at www.ProjectApism.org.