California Ag Network

Tag: CAC

  • Early Season Retail Promotions Build Demand For California Avocados

    California Avocado Commission — Early demand for California avocados is high this year among targeted retailers, with both national chains and regional retailers indicating they are anxious for the start of the California avocado season. In past years, the season kicked off with “first of the season” Big Game or Valentine’s Day promotions at local specialty retailers. This year, due to market and harvest conditions, the early-season promotions at loyal retailer partners’ locations are instead focusing attention on spring and Easter.

    Both Gelson’s and Mollie Stone’s responded positively to the California Avocado Commission’s spring and Easter promotional plans, which include a combination of in-store display and sales contests partnered with robust online, social media and digital advertising campaigns. The Commission’s integrated promotional plans recognize that due to COVID-19 safety protocols retailers remain cautious about in-store promotions, such as demos, and that online marketing continues to play a primary role in marketing California avocados this season. Display and sales contests, which elevate in-store merchandising to draw attention to the fruit, also are important tactics in CAC customized retail programs.

    Gelson’s “Spring Into California Avocados” promotion ran from February 15 – 25. The upscale retailer hosted display and sales contests at its 27 Southern California locations, ensuring early season California avocados were front-and-center to announce the start of the long-anticipated season. Mollie Stone’s Easter promotion runs from March 22 – April 4, and includes sales and display contests at the retailer’s nine locations throughout the San Francisco Bay area. Both retail chains feature Commission display bins and signage.

    For both retailers, the in-store contests are complemented by value-added social media promotions created by the Commission. Posts on the retailers’ social media platforms showcase California avocado centric recipes, photos and messaging that celebrates the availability of fresh California avocados as we swing into spring. The social posts play a critical role in expanding the reach of the Commission’s messaging, promoting the fruit’s versatility in meals and snacks, touting California avocados’ nutritional qualities and showcasing the premium character of this locally grown fruit.

  • Preventing & Managing Wind Damage In CA Avocado Groves

    California Avocado Commission — When it comes to potential wind damage, California avocado growers typically face two different scenarios: chronic wind exposure or severe wind events.

    Avocado trees housed in windy portions of a grove are often stunted and underperform production wise.  They also may be water stressed, which will impact the uptake of minerals, and their roots may be stressed due to consistent rocking caused by the wind. The only remedy, in these cases, is to create a wind shelter that minimizes wind exposure.

    In windy groves, fruit often will exhibit markings that can be mistaken for diseases or pest damage. For example, black marks caused by wind may be mistaken for anthracnose post harvest rot or russet scars may lead growers to suspect their trees have persea thrips damage. While some superficial wind damage may not affect the quality of the fruit – particularly if that damage occurs when the fruit is young – some wind damage can lead to large scars or “alligator skin” that are more impactful to fruit quality.

    Severe wind events often blow avocado trees over. In these instances, unless the tree is very young, consider removing the tree. Attempting to move the tree back into an upright position can further damage the roots. If the fallen trees looks like it will recover, it can remain where it is. New shoots may emerge from the trunk and form the structure for a new tree. If this occurs, large, old branches can be removed later as the new portion of the tree takes shape. If you do remove the tree, avoid planting a new tree close to where the old tree existed unless you remove the stump and sterilize the soil. The roots from the old tree could become infected by Phytophthora root rot and thus infect a new tree.

    Strong wind events also can break limbs or blow fruit off the trees. After a storm, windfall should be properly disposed of and broken branches removed.  It is important to monitor trees after severe storms, paying close attention to signs of wilting that may indicate stressed roots or a broken branch that was missed during earlier assessments.

    For more information about preventing and managing wind damage, visit the California Avocado Commission’s wind protection online library.

  • California Avocado Commission Referendum Announced

    Every five years the California Department of Food and Agriculture holds a state-mandated referendum vote to provide California avocado growers the opportunity to determine whether the California Avocado Commission will be reapproved to continue for the next five years.

    “The referendum process is a vital component of the law that established the California Avocado Commission,” said Rob Grether, chairman of the CAC board of directors. “It provides growers the opportunity to cast their vote on continuing the operations of the organization.”

    Ballots will be mailed to eligible California avocado commercial producers on February 15, 2021 and must be postmarked and sent to CDFA for tallying by March 16, 2021. Eligible commercial producers who do not receive a ballot should contact the CDFA Marketing Branch staff at 916-900-5018. Results are expected to be tallied by CDFA and announced no later than March 31, 2021.

    “The California Avocado Commission exists to support California avocado growers and is governed by a board of directors comprised of their peers to ensure good stewardship of grower funds,” said CAC President Tom Bellamore.

    The Commission focuses on fostering grower viability by building demand for California avocados at a price premium and increasing the fruit’s perceived value, preference and loyalty. About 70% of CAC’s current budget goes toward marketing, which includes developing strategic, targeted programs with retailers and foodservice operators. Other key activities include advocating for California avocado growers on issues such as water, trade and export, supporting production research and grower education.

    There have been eight reaffirming referenda since the establishment of the California Avocado Commission in 1978.

  • Drier La Niña Winter Conditions Can Contribute To Sudden Freezes

    California Avocado Commission — Although the California avocado growing regions are expected to experience a moderate La Niña phase with warmer average temperatures through spring 2021, the lower rainfall amounts associated with this climate phase can lead to sudden cold spells or freezes. As Dr. Ben Faber noted in a recent blog post, some of California’s most severe freezes have occurred during weak La Niña phases.

    Advection and radiation freezes pose the most threat to California avocado groves. Advection freezes are caused by the movement of arctic air into the region. Radiation freezes occur at night when clear skies and calm conditions are present that allow cold pockets of air to settle in low areas of the grove.

    To prepare for potential frosts or freezes, it’s important to remember that different prevention measures may be used for a frost versus a freeze. A frost is caused when objects cool at night and radiate their heat loss, thus chilling the surrounding air. In Southern California, warm air is typically close to the ground due to a low ceiling, thus causing a temperature inversion that protects orchards. However, windy conditions can disrupt this inversion and press cold air to the ground. In comparison, a freeze occurs when cold air moves in and the air temperature decreases at both high and low levels.

    • To prevent damage when cold weather events are in the forecast, consider the following.
    • To protect against frost or freeze, orchard heaters can be used to distribute heat. The downside of heaters is the cost of running them and possible fire hazards.
    • Wind machines should only be used in frost, not freeze, conditions and should not be used when it is windy. This economical option can be paired with orchard heaters to improve effectiveness.
    • If frost threatens and no temperature inversion is present, the best practice is to run microsprinklers during the day and turn off the water prior to sunset. If the temperature drops below freezing, restart the water and run it until sunrise. If ice forms on the fruit or leaves, heat will be released as the ice melts and protect the plants.
    • If watering the entire grove prior to a cold weather event is cost prohibitive, it is recommended that growers opt to water only those portions of their groves that tend to be coldest.

    If your grove is affected by a frost/freeze event, please view Post-freeze Avocado Grove Management on the California Avocado Commission’s website. For more complete information, visit the Commission’s online library of frost/freeze protection articles.

  • 2021 CA Avocado Crop Estimate & Harvest Projections

    The California Avocado Commission has published the 2021 California Avocado Pre-Season Crop Estimate and weekly harvest projections for the calendar year (January 1st through December 31st). The estimate and projections are the result of handler surveys submitted in early December 2020 and represent the industry’s best information on the coming season’s crop at this time.

    Further details of the estimate and harvest projections can be found online and includes the following information:

    • Pre-season industry volume estimates, broken down by variety, based on AMRIC Handler survey responses
    • Weekly harvest forecast utilizing AMRIC Handler Survey percentages for Hass variety (4-year historical forecast used for Lamb, 2-year historical used for Gem and other)
    • Weekly harvest forecast comparison of 4-year historical forecast versus AMRIC Handler Survey

    The Commission staff will remain in contact with growers, handlers and grove managers throughout the season, via surveys and telephone conversations, to track harvest strategy and will provide updated forecasts to the industry as they become available. As we have done in the past, CAC will plan to follow up with the handlers in February to discuss crop volume and harvest plans before the season gets underway.

    In addition to handler surveys and discussions, the annual grower crop survey and acreage inventory survey will be conducted in Spring 2021, with a mid-season crop estimate update available mid-May 2021.

  • 2020 CA Avocado Acreage & Condition Report

    To ensure the California Avocado Commission can make informed marketing and budgeting decisions, it has partnered with LandIQ to conduct statewide spatial land use surveys via digital satellite imagery, aerial photography and analytical tools. This data is compiled in a comprehensive land use database and an annual summary is prepared. The 2020 Statewide Avocado Acreage and Conditional Analysis is now available online.

    Highlights from this year’s survey are as follows:

    • Planted avocado acreage in the state totaled 54,017
    • The planted avocado acreage for avocado growing counties is as follows:
      • Riverside — 5,046
      • Santa Barbara — 6,741
      • San Diego — 16,488
      • San Luis Obispo — 4,043
      • Ventura — 19,754
      • Minor county total (Fresno, Kern, Los Angeles, Monterey, Orange, San Bernardino, Tulare) — 1,945
    • As concerns the growing regions, their acreage is divided as follows:
    • The report also has tables detailing acreage by zip code, new acres by county and planting year, a breakdown of avocado acreage by planting density (high density versus standard), the net change in producing/young/stumped acreage by county, and various maps noting the acreages of avocados planted.
    • The age of planted acreage breaks down as follows:
      • Planting to 4 years — 4,417 acres (8%)
      • 5 – 8 years — 9,289 acres (17%)
      • 9 – 15 years — 7,717 acres (14%)
      • 16 – 20 years — 8,989 acres (17%)
      • 21 years + — 23,604 acres (44%)

  • CA Avocado Commission Reduces Assessment Rate & Elects New Leaders

    At the October 7, 2020 meeting, the California Avocado Commission Board of Directors took action to approve the assessment rate for the upcoming 2020-21 fiscal year, reducing the assessment rate to 1.75% of the gross dollar value of fruit sold. The new assessment rate is effective from November 1, 2020 through October 31, 2021. The CAC Board and management are committed to prudently managing growers’ assessment dollars, with the current rate reflecting a quarter percent reduction from the 2019-20 assessment rate of 2.00% and more than one-half a percent reduction from the 2018-19 assessment rate of 2.30%. During these past two years, despite the reduction in assessment rate, a larger percentage of the budget has been allocated toward marketing activities, with 2020-21 representing the highest allocation ever at more than 70% of the total budget. We thank the outgoing 2019-20 CAC Board, under the direction of Chairman John Lamb, for their work to build balanced budgets and prioritize spending.

    The California Department of Food and Agriculture seated newly elected California Avocado Commission board members at the Commission’s November 19, 2020 board meeting. The following new members shall serve a two-year term (November 1, 2020 through October 31, 2022).

    District 1 Member: Jessica Hunter (Re-elected; existing District 1 Member)

    District 2 Member: John Cornell (New Member; previously District 2 Alternate)*
    District 3 Member: John Lloyd-Butler (New Member; previously District 3 Alternate)*
    District 4 Member: Rachael Kimball Laenen (New Member)
    District 5 Member: Andrew Prechtl (New Member)
    Handler Member: Gary Caloroso,  Giumarra (Re-elected; existing Handler Member)
    *With previous alternates assuming member seats in District 2 and District 3, there now exist vacancies for alternate seats in these two districts. These vacancies will be filled by a majority vote of the board at an upcoming Commission board meeting.
    The following newly elected Executive Officers shall serve a one-year term (November 1, 2020 through October 31, 2021).
    Chairman – Rob Grether, District 3 Member
    Vice-Chairman – Ryan Rochefort, District 2 Member
    Treasurer – Jason Cole, District 4 Member

    Secretary – Jessica Hunter, District 1 Member

  • Fall Microirrigation System Maintenance

    California Avocado Commission — Microirrigation systems (microsprinklers, drip emitters and drip tape) tend to provide better distribution/emission uniformity than other irrigation methods. However, the miniscule flow passages in these systems can become clogged and thus disrupt the uniformity of water applied to a crop.

    Late fall and winter are an ideal time to review irrigation systems for needed repairs or malfunctions. A great resource is the University of California Division of Agriculture and Natural Resources’ (UCANR) webpage that outlines various causes of microirrigation clogging and means of preventing or mitigating the problems.

    The first step in alleviating clogs is identifying the problem. Clogs can be caused by:

    • Particulates — sand, silt, clay — from surface water sources
    • Biological materials — algae, bacterial slimes — from surface water sources
    • Chemical precipitates — such as iron and calcium carbonate — from groundwater sources or fertigation

    To identify the issues, UC ANR recommends first flushing water from the lateral lines through a nylon stocking or paint straining cloth and examining what material is collected. If you see mineral particles, you have identified your problem. If you notice that clogging tends to occur at the ends of the lines, this also tends to indicate particulate clogging.

    If you identify organic matter when flushing the line, then biological materials are the issue. You also can open the end of a lateral line and feel inside the tube to see if it is slimy. If so, biological materials are the source of your problem.

    If you note white, crusty materials or reddish staining of the soil near the emitters, this is indicative of chemical precipitates.

    Once you have identified the clogging source, you can take steps to address the issue.

    Particulate issues can be prevented by regular line flushing and the use of filters. UCANR provides a list of various filters and a table noting which filter to choose based on water source, particulates and irrigation system. To adequately flush the lines, water must flush at least 1 foot per second at the end of the drip line — 1 gallon/minute for 5/8” diameter and 2 gallons/minutes for 7/8” diameter drip lines.

    If organic matter is the source of the clogging, the best mode of treatment is a good filtration system combined with use of a biocide to remove the biological contaminants. Visit the UCANR site for a list of filters and the aforementioned “how to choose a filter” table.

    If calcium carbonate (lime) or iron is clogging your emitters, strong acid can make either disappear if emitters are left in it overnight. Lowering the pH (6 or below) of the water by injecting common acids — sulfuric acid, muriatic acid or hydrochloric acid — can help prevent clogging due to lime. UCANR provides specific formulas to help growers determine the injection rate needed to alter water pH.

    If high iron levels are the source of the clogging, aerating the water to oxidize the iron and then allowing the precipitates to settle before irrigating (a reservoir or settling basin is necessary) is the most practical option. Common acids also can be injected to decrease the pH of the water (4 or less).

    For more information on routine microirrigation tasks, visit the UCANR website.

  • CDFA & UC Davis Collaborate to Assist Commercial Laboratories Testing Smoke Impact in Wine Grapes

    The California Department of Food and Agriculture (CDFA), the UC Davis Department of Viticulture and Enology, and the UC Davis College of Agricultural and Environmental Sciences are offering laboratory services, with limited capacity, to test winegrapes and wine for the presence of smoke compounds due to recent wildfires. In addition to commercial laboratories already performing tests, these laboratories are offering limited services to hopefully reduce testing turnaround times.

    “We are hearing many growers and grower representatives voice concern over lab turnaround time, as lab results are needed to make a decision about harvesting their winegrapes or to assess the resulting wines,” said CDFA Secretary Karen Ross. “To answer a need in our world-renown California wine industry, CDFA is proud to partner with UC Davis to offer the resources of our laboratories.”

    “The wine and grape industries of California are important to the state and to our college, “ said Helene Dillard, Dean of the College of Agricultural and Environmental Sciences at UC Davis.  “The wildfires this year have been particularly devastating, so we are very happy to be partnering with the CDFA to apply our collective resources to this important issue.”

    “Our staff members are working diligently to meet the laboratory needs of the wine and winegrape industries resulting from the unprecedented number of wildfires on the west coast,” said Gordon Burns, CEO of ETS Laboratories. “We appreciate the partnership of CDFA and UC Davis as we work together to answer industry needs.”

    CDFA’s Center for Analytical Chemistry (CAC) is offering grape analysis. CDFA’s limited testing capacity is estimated to be 30-50 samples per day, with a turnaround time of 3-5 days, as long as a backlog does not occur. If a backlog does occur and the turnaround time will be longer, CDFA will provide that information on its website.

    The UC Davis laboratories are teaming-up to provide wine analysis.

    While the analytical methods of the CDFA and UC Davis labs have been validated and are accurate, the methods are not ISO 17025 (International Organization for Standardization) accredited. Therefore, growers should verify with insurance providers and/or legal counsel that the results will be acceptable before submitting samples. The laboratories will measure seven smoke-related compounds (guaiacol, 4-methylguaiacol, o-cresol, p-cresol, m-cresol, syringol, and 4-methylsyringol).

    To submit grape samples, visit the CDFA laboratory website for sample submission instructions, or contact CDFA at CDFA.CAC_receiving@cdfa.ca.gov or (916) 228-6844. Price per grape sample is $246.

    To submit wine samples, visit the UC Davis laboratory website for more information. Price per wine sample is $150.

  • Improved Method to Test for Mycotoxin in Feed

    California Department of Food and Agriculture (CDFA) Center for Analytical Chemistry (CAC) scientists Bahar Nakhjavan, Nighat Sami Ahmed, and Maryam Khosravifard were recently published in an academic journal after developing an improved method to test for mycotoxin in feed. Their article, “Development of an Improved Method of Sample Extraction and Quantitation of Multi-Mycotoxin in Feed by LC-MS/MS,” details their research of evaluating the three most popular sample preparation techniques for determination of mycotoxins, then selecting the best method and optimizing it.

    Mycotoxins are the most common contaminants in agricultural crops produced by several species of mold and fungi. During growth, maturity, harvest, storage and processing of food and animal feed products, the fungus produces mycotoxins and other secondary metabolites. Mycotoxin-contaminated food and feed threaten human and animal health even at very low concentration.

    Nakhjavan, Ahmed and Khosravifard work in CDFA’s CAC Environmental Safety Laboratory. Testing for mycotoxin in food and animal feed in the Regulatory Analysis Laboratory is part of their job of preventing contaminated food and feed from being consumed by humans, livestock and poultry in California. CAC uses state-of-the-art equipment and processes to test fruits, vegetables, nuts, animal feed, milk, water and air to ensure that pesticide and chemical levels are within the safety range established by national and international standards. Additional CAC staff who contributed to the work discussed in this published paper include Sally Henandez, Jose Salazar and Sarva Balachandra.

    Click here to read “Development of an Improved Method of Sample Extraction and Quantitation of Multi-Mycotoxin in Feed by LC-MS/MS,” by CAC scientists Nakhjavan, Ahmed and Khosravifard.

    (L-R) CDFA scientists Bahar Nakhjavan, Nighat Sami Ahmed and Maryam Khosravifard.