California Ag Network

Tag: ARS

  • New Food Freezing Concept Improves Quality, Increases Safety and Cuts Energy Use

    Shifting to a new food freezing method could make for safer and better quality frozen foods while saving energy and reducing carbon emissions, according to a new study by U.S. Department of Agriculture’s Agricultural Research Service (ARS) and University of California-Berkeley scientists.

    “A complete change over to this new method of food freezing worldwide could cut energy use by as much as 6.5 billion kilowatt-hours each year while reducing the carbon emissions that go along with generating that power by 4.6 billion kg, the equivalent of removing roughly one million cars from roads,” said ARS research food technologist Cristina Bilbao-Sainz. She is with the Healthy Processed Foods Research Unit, part of ARS’s Western Regional Research Center (WRRC) in Albany.

    “T­hese savings could be achieved without requiring any significant changes in current frozen food manufacturing equipment and infrastructure, if food manufacturers adopt this concept,” Bilbao-Sainz added.

    ARS scientists Cristina Bilbao-Sainz (right) and Roberto Avena-Bustillos demonstrate the use of isochoric freezing chambers. Photo: U.S. Department of Agriculture.

    The new freezing method, called isochoric freezing, works by storing foods in a sealed, rigid container—typically made of hard plastic or metal—completely filled with a liquid such as water. Unlike conventional freezing in which the food is exposed to the air and freezes solid at temperatures below 32 degrees F, isochoric freezing preserves food without turning it to solid ice.

    As long as the food stays immersed in the liquid portion, it is protected from ice crystallization, which is the main threat to food quality.

    “Energy savings come from not having to freeze foods completely solid, which uses a huge amount of energy, plus there is no need to resort to energy-intensive cold storage protocols such as quick freezing to avoid ice crystal formation,” Bilbao-Sainz said.

    Isochoric freezing also allows for higher quality storage of fresh foods such as tomatoes, sweet cherries and potatoes that are otherwise difficult to preserve with conventional freezing.

    Another benefit of isochoric freezing is that it also kills microbial contaminants during processing.

    “The entire food production chain could use isochoric freezing—everyone from growers to food processors, product producers to wholesalers, to retailers. The process will even work in a person’s freezer at home after they purchase a product—all without requiring any major investments in new equipment,” said WRRC center director Tara McHugh, co-leader of this study. “With all of the many potential benefits, if this innovative concept catches on, it could be the next revolution in freezing foods.”

    UC-Berkeley biomedical engineer Boris Rubinsky, co-leader of this project, first developed the isochoric freezing method to cryopreserve tissues and organs for transplants.

    Since then, ARS and UC-Berkeley have applied for a joint patent for applying isochoric freezing to preserving food. The research team is now developing the best applications for this technology in the frozen foods industry, especially scaling up the technology to an industrial level. They also are seeking commercial partners to help transfer the technology to the commercial sector.

    UC-Berkeley mechanical engineer Matthew Powell-Palm, one of the lead authors of the study paper, noted that “isochoric freezing is a cross-cutting technology with promising applications in not only the food industry, but in medicine, biology, even space travel.”

    WRRC has also been designated a National Historic Chemical Landmark in 2002 by the American Chemical Society for developing the Time-Temperature Tolerance studies, which made possible the production of stable, safe and high quality frozen food, revolutionizing the industry in the 1950s.

    This research was published in Renewable & Sustainable Energy Reviews.

    The Agricultural Research Service is the U.S. Department of Agriculture’s chief scientific in-house research agency. Daily, ARS focuses on solutions to agricultural problems affecting America. Each dollar invested in agricultural research results in $17 of economic impact.

  • Microalgae is the Bee’s Knees

    We love to eat the honey that honey bees produce, but what do honey bees eat?

    The usual answer to this question is nectar and pollen. However, malnutrition in honey bees – a major reason why they’re growing more susceptible to pathogens, parasites, and pesticides – is a growing issue in the world of agriculture. This problem is exacerbated by habitat loss, climate change, decreases in flowering plant diversity, and the rise of crop monoculture, all of which have contributed to the loss of pollen sources that usually keep honey bees well-fed.

    Fortunately, ARS scientists with the ARS Honey Bee Breeding, Genetics, and Physiology Research Laboratory in Baton Rouge, LA have discovered another option on the honey bee menu: microscopic algae, or “microalgae.”

    According to ARS researchers Vincent Ricigliano and Michael Simone-Finstrom, different species of microalgae possess nutritional profiles that parallel that of pollen, making the algae an ideal substitute. This is an especially important finding for commercial beekeepers, who rely heavily on pollen replacements to feed their bees on a large scale.

    “Although there are currently several artificial pollen diets available, they don’t always contain adequate levels of essential macronutrients (such as lipids and proteins), micronutrients (vitamins and minerals), and antioxidants,” explained Ricigliano. “These artificial diets try to incorporate a variety of ingredients like soy, corn gluten, yeast, egg, or milk protein, but they often fail to provide the nutrition needed by honey bees to thrive. On the other hand, microalgae are extremely rich in helpful compounds like amino acids, which are crucial for protein synthesis, immune function, and overall colony growth.”

    In their research, Ricigliano and Simone-Finstrom concluded that bees that consumed microalgae diets grew to larger sizes, had more healthy bacteria in their guts because of the algae’s prebiotic qualities, and were generally more vigorous than honey bees that consumed other pollen alternatives.

    Ricigliano believes that there are many species of microalgae that have the potential to improve honey bee health in different climates and seasons.

    These single-celled organisms are easy to grow on a large scale, requiring just sunlight, nutrients, and shallow bodies of water to produce highly nutritious food for bees. Furthermore, microalgae are even capable of thriving in places where other crops cannot be grown, said Ricigliano. Its ecological viability, affordability, nutritional benefits, and ability to act as a biofertilizer and biofuel has enabled microalgae to be a ‘wonder crop’ of the future. And its benefits as a healthy pollen alternative for honey bees has the whole world buzzing. – By Georgia Jiang, USDA-ARS Office of Communications

  • Scientists Serve Up Vaccine Cocktail for Protecting Cattle from Disease

    Scientists with the Agricultural Research Service (ARS) have developed a new experimental vaccine to protect cattle from the bacterium that causes Johne’s disease, Mycobacterium avium subsp. paratuberculosis (MAP).

    Johne’s disease, also known as paratuberculosis, is a chronic intestinal disorder that can cause diarrhea, weight loss, poor health and sometimes death in afflicted cattle. In the United States, Johne’s disease is most prevalent in dairy herds, costing the industry more than $220 million annually in losses. The disease also affects other ruminant animals, including sheep, goats and deer.

    Rather than use the cells of live but weakened or dead MAP, as has been done with past commercial vaccine formulations, ARS microbiologists Judy Stabel and John Bannantine set their sights on four proteins from the bacterium, which they discovered from prior research to sequence and characterize its genome (or, genetic makeup).

    In preliminary trials, vaccinating mice with the proteins reduced bacterial colonization of the rodents’ intestinal walls and bacterial shedding in feces, a major route by which other hosts become infected. Cattle, for example, can become infected while grazing pasture where MAP-contaminated manure is located. Calves ingesting colostrum from an infected dam is another route of infection, noted Stabel, who along with Bannantine, is with the ARS National Animal Disease Center’s Infectious Bacterial Diseases Research Unit in Ames, Iowa.

    Encouraged by the results with mice, the researchers scaled-up their efforts, using standard laboratory procedures to produce the four proteins and combine them into a single, recombinant vaccine “cocktail” that could be administered to calves at doses of 200 or 400 micrograms.

    Throughout, the researchers strived to avoid shortcomings of past vaccine formulations that had been developed, including a tendency to trigger blemishes at the site of injection and interference with the accuracy of serological tests used to detect not only MAP, but also another closely related bacterial species that causes bovine tuberculosis.

    Trials with dairy calves, detailed in the April 2021 issue of the journal Vaccine, indicate the vaccine cocktail did not disappoint. In addition to rendering the young animals immune to the disease over the course of a year of monitoring, the formulation showed little to no cross-reactivity with serological tests for both Johne’s disease and bovine tuberculosis. Administering the vaccine cocktail also did not trigger blemishes at the injection site, Stabel reported—a potential benefit for animals raised for their meat and hides.

    The researchers note the need for additional efficacy trials and welcome collaboration with an industry partner to explore the patented vaccine cocktail’s commercial potential further.

    Microbiologist Judy Stabel evaluates the results of the interferon-gamma blood test to diagnose cows infected with M. avium subspecies paratuberculosis (photo by Peggy Greb).

    The Agricultural Research Service is the U.S. Department of Agriculture’s chief scientific in-house research agency. Daily, ARS focuses on solutions to agricultural problems affecting America. Each dollar invested in agricultural research results in $17 of economic impact.

  • ARS Scientists Develop Prediction Technologies to Reduce Soil Loss

    ARS scientists are the designers of seven of the top ten most used computer simulation models that are helping reduce soil erosion around the world.

    Agricultural Research Service scientists designed seven of the top ten—13 of the top 25—most used predictive technologies/simulation models that are reducing the loss of soil to erosion around the world, according to a recently published study.

    Although originally developed for cutting down soil losses due to erosion from agricultural practices, today these models also are reducing soil loss from erosion on construction sites, mined land, road corridors, logging and clear-cut areas, landfills, even military training grounds and more in at least 126 countries.

    Soil erosion by water has been estimated to annually cost about $8 billion to the global gross domestic product and reduce global agri-food production by 33.7 million tons with accompanying rises in world agri-food prices of up to 3.5 percent, according to a 2019 study. Further, some agronomists hold that soil erosion can unlock and increase carbon dioxide emissions.

    Prediction technologies allow researchers, regulators and land managers to model how changes in various practices will affect the amount of soil that will be lost to erosion, at scales ranging from a single hillslope to whole watersheds. They can compare the likely benefits of applying different soil conservation practices.

    Number two on the list of most used erosion prediction models is the progenitor of them all: the Universal Soil Loss Equation (USLE), which ARS first published as a complete technology in 1965. USLE began as a fairly simple equation that gave an answer in tons of soil lost per acre per year by multiplying a few direct factors representing rainfall, soil type, cropping system, conservation practices and hillslope steepness and length.

    Experts have hailed the USLE as the most significant development in soil and water conservation in the 20th century.

    Number one on the list—the single most applied soil erosion model in the world—is an outgrowth of USLE, published by ARS as the Revised Universal Soil Loss Equation (RUSLE) in 1997. RUSLE was adapted for sophisticated computer interfaces including graphics, as well as given new weighting of some factors that made the model independent of land-use. This broadened RUSLE’s applicability.

    RUSLE has been revised several times since that first publication, each time adding new capabilities. For example, RUSLE2 treats land use as a continuum taking into account that previous use affects erosion under a new use. Other factors like the type of vegetative cover—crop, pasture, woodland, bare ground—also were added making the simulation more accurate.

    In the wake of these two big picture models—USLE and RUSLE—ARS researchers have developed specialized models, each meant to provide greater detail in a particular area of controlling erosion. The ARS Water Erosion Prediction Project (WEPP) model was designed to provide more reliable modelling of waterflow and sedimentation movement in small water channels all the way up to giant watersheds.

    Other models/predictive technologies on the list focus on predicting the impact of land management practices on water, sediment and agricultural chemicals in large complex watersheds such as the Soil Water Assessment Tool (SWAT), predicting the relationship between soil erosion and soil productivity such as the Erosion Productivity and Impact Calculator (EPIC) and predicting runoff and erosion rates on rangelands using Range Land Hydrology Models (RHEM).

    The goal of all the models that ARS scientists develop and continue to refine is to help preserve one of the most valuable resources there is: productive soil, for which there is no replacement.

    The study, published in Science of the Total Environment, was conducted by 67 soil erosion scientists from 25 countries.

    The Agricultural Research Service is the U.S. Department of Agriculture’s chief scientific in-house research agency. Daily, ARS focuses on solutions to agricultural problems affecting America. Each dollar invested in agricultural research results in $17 of economic impact.

  • Piglets Pay the Price of Mom’s Heat Stress

    Pigs that experience heat stress while pregnant can predispose their offspring to health complications and diminished performance later in life.

    Piglets born to heat-stressed sows may carry the burden of their mom’s discomfort later in life in the form of health complications and diminished performance. Now, this so-called “in utero heat stress” may also hypersensitize the piglet’s immune system, potentially doing more harm than good to the young animals, a team of Agricultural Research Service (ARS) and university scientists has learned.

    Pigs are more susceptible to heat stress due to an inability to sweat. This places them at greater risk of health and production problems that can add up to millions of dollars annually in revenue losses to swine producers.

    Research has shown that pigs experiencing heat stress during pregnancy can predispose their offspring to complications later in life that can lead to diminished performance, including efficient feed use, growth rate and ultimately, pork production. However, less is known about how this heat stress affects their offspring’s innate immunity, or first-line defense against disease-causing bacteria and other pathogens, noted Jay S. Johnson, an animal scientist at the ARS Livestock Behavior Research Unit in West Lafayette, Indiana.

    To learn more, Johnson teamed with his ARS laboratory colleagues and scientists from the Purdue University in West Lafayette, Indiana; the Oak Ridge Institute for Science and Education in Oak Ridge, Tennessee; and the University of Missouri in Columbia, Missouri.

    Following established animal care and welfare guidelines, the team evaluated two groups of piglets. The first group consisted of 16 piglets born to mothers exposed to stressful temperature cycles ranging from 79 to 97 degrees Fahrenheit during the first half of pregnancy. The second group of 16 were born to moms exposed to a “comfortable” 64 degrees Fahrenheit.

    A thermal image of a pig’s surface temperature.

    The researchers then simulated a pathogen attack on the piglets using lipopolysaccharide, a molecule found in the cell walls of some bacteria. Blood samples were drawn to monitor certain markers of the piglets’ innate immune response, including glucose, insulin, non-esterified fatty acids, cortisol (a stress hormone) and cytokines (markers of inflammation). These, along with white blood cell counts, were compared to a lipopolysaccharide-free group of piglets used as controls.

    Among their findings, reported in the December 2020 issue of the Journal of Animal Science, the researchers observed:

    • The core body temperatures of the in utero heat-stressed and non-stressed piglets given the lipopolysaccharide were about the same.
    • However, in utero heat-stressed piglets had higher levels of the stress hormone cortisol.
    • These same piglets also had greater cytokine (markers of inflammation) levels in response to the lipopolysaccharide challenge, which provided evidence of a hypersensitive immune response. The researchers worry this could translate to greater risk of pain, infection, organ failure and other complications in such piglets under real-world production systems.

    Johnson said their research dovetails with increasing concern over the potential impacts of global climate change on swine welfare and management—especially in regions of the world prone to frequent or prolonged drought and heat waves.

    With support from USDA’s National Institute of Food and Agriculture, the team is also taking a genomic approach to preempting the effects of in utero heat stress on piglets. Of particular interest is using genomic markers to flag traits for improved heat tolerance in sows used for breeding.

    “To achieve this goal, we are partnering with two major swine breeding companies,” Johnson said. “Our hope is that completion of this project will provide swine producers with a cost-effective strategy to reduce the negative impact of in utero heat stress on swine in the United States and globally.”

    The Agricultural Research Service is the U.S. Department of Agriculture’s chief scientific in-house research agency. Daily, ARS focuses on solutions to agricultural problems affecting America. Each dollar invested in agricultural research results in $17 of economic impact.

  • Good Bacteria Could Contribute in Fight Against Pathogens in Beef Processing Facilities

    Disease-causing bacteria like Escherichia coli O157:H7 and Salmonella enterica could survive sanitization in beef processing facilities. Scientists and collaborators in the United States Department of Agriculture’s (USDA), Agricultural Research Center (ARS) are investigating how this happens while also seeking approaches to solve the problem.

    E. coli O157:H7 (a Shiga toxin-producing E. coli) and S. enterica are two disease-causing bacteria (pathogens) associated with foodborne illnesses in the United States. Because these pathogens can make people sick through contaminated food, scientists are researching effective and economical ways to lower risks of cross-contamination at food processing facilities.

    In a study, scientists explained the survival behavior of E. coli O157:H7 after exposure to unfavorable conditions such as those created by routine sanitation procedures, and how it varies within beef processing facilities that are following similar sanitizing protocols. “Under certain conditions, pathogens like E. coli O157:H7 and S. enterica would enter into a dormant or “hibernation” stage, forming a thin film that allows it to better survive on hard surfaces such as concrete or steel.  This is called a bacterial biofilm, and it cannot be seen with the naked eye,” explained Dr. Rong Wang, Research Microbiologist with U.S. Meat Animal Research Center in Clay Center, NE.

    A major concern is that biofilms allow harmful bacteria to better survive on hard surfaces at the facility, potentially contaminating food, and making consumers sick. Interestingly, studies show that these pathogens do not survive on their own! After comparing samples from different facilities that follow similar cleaning measures but experiencing different levels of pathogens, scientists learned that multiple species of bacteria found in the processing plant environment of each location could either enhance or reduce a pathogen’s chance of surviving sanitizing procedures. They do this by forming a biofilm community (mixed biofilm structure).

    “We look at the unique communities of environmental bacteria that collaborate or compete with pathogens at each location. The collaboration may lead to high pathogen prevalence at certain locations, but strong competition may inhibit pathogen survival at other places.  Since many of these environmental bacteria are not harmful to humans or animals, if we can identify the specific species that inhibit pathogen biofilm formation, we can use them as probiotics (preventive measures) against disease-causing bacteria.”

    Meanwhile, a couple of studies published in the Journal of Food Protection from this research group show that multi-component sanitizers, a novel multifaceted approach using combinations of various sanitizing reagents and treatments could inactivate biofilms formed by E. coli O157:H7 and S. enterica more effectively, reducing the chances of the pathogen surviving cleaning practices at beef processing facilities.

    More research is needed to understand the interaction of multiple species of bacteria present in different processing plant environments and how they vary from one facility to another—reflecting different locations, temperatures, and other factors. Can we develop a more environmentally friendly and cost-effective approach against pathogens in food processing facilities?

    “We understand how crucial it is for the food industry to have measures that will effectively prevent the formation of these biofilms and reduce the risk of food contamination and protecting public health,” said Wang.

    The Agricultural Research Service is the U.S. Department of Agriculture’s chief scientific in-house research agency. Daily, ARS focuses on solutions to agricultural problems affecting America. Each dollar invested in agricultural research results in $17 of economic impact.

  • An Organic Alternative to Combatting Spotted Wing Drosophila

    Scientists from the Agricultural Research Service (ARS) are working to understand how something can be equally effective as both a government-approved food additive and as a pesticide.

    Methyl benzoate is a naturally occurring compound produced by plants. The U.S. Food and Drug Administration long ago approved methyl benzoate for human use; its fruity and floral aroma makes it a staple in perfumes and cosmetics and as a food additive. Nature employs it to attract pollinators.

    While many insects find methyl benzoate appealing, Aijun Zhang, research chemist at the ARS Invasive Insect Biocontrol and Behavior Laboratory in Beltsville, MD, is investigating why some insects and non-insect pests find it revolting.

    From left, research chemist Aijun Zhang, postdoctoral Nick Larson, and intern Lauryn Brooks demonstrated research into methyl benzoate uses as a pesticide in an ARS poster day demonstration.

    Zhang’s research has focused on methyl benzoate’s utility as a pesticide for human protection and crop protection. So far, Zhang has documented that the compound will kill or repel many insects in various stages of development, including mosquitoes, bed bugs, fire ants, ticks, flies, moths, and the brown marmorated stink bug. Perhaps most important, however, is its ability to repel and kill the spotted wing drosophila fly (SWD). “SWD is the most significant invasive insect pest of soft-skinned fruit crops in the USA,” Zhang said.

    Since SWD was first detected in California a little over a decade ago, the fly has become a key pest in blueberries, blackberries, raspberries, strawberries, and cherries. These crops have a combined annual value of over $5.8 billion, and farmers lose about $718 million annually to SWD damage.

    Farmers fight SWD with synthetic insecticides, but at prices up to $1,200 per acre, that method is expensive. It is costly in other ways, too, Zhang said; the synthetic insecticide is harmful to the environment, contributes to pesticide resistance, and may be harmful to humans.

    Because methyl benzoate is an environmentally friendly, bio-based compound, Zhang thinks it has great potential to be used by people for human protection as an alternative to synthetic pesticides. It also costs much less than synthetic pesticide treatments.

    According to Zhang, methyl benzoate shares the same “chemical skeleton” as DEET, the gold standard in arthropod repellency, a detail that is leading future research efforts.

    “Understanding the structure-activity relationship will allow researchers to modify the chemical structure of the methyl benzoate molecule to develop pesticides that are more efficient at controlling arthropod pests,” he said. — By Scott Elliott, USDA-ARS Office of Communications.

  • ARS Citrus Rootstocks: A Success Story

    Remember that old commercial that declared, “A day without orange juice is like a day without sunshine”? Thanks to the Agricultural Research Service (ARS), consumers can enjoy “citrus sunshine” whenever they like. Begun by USDA more than a century ago, the citrus research program has helped to ensure a bounty of not only oranges, but also grapefruits, mandarins, lemons, and more.

    But that bounty was severely threatened in 2005 with the appearance of a new and destructive disease. Citrus greening, or huanglongbing (HLB), has caused Florida citrus production to plummet around 70 percent in the 15 years since the disease hit U.S. citrus groves. HLB, which causes low yields, yellowed leaves, and bitter-tasting fruit, is caused by a bacterium, Candidatus Liberibacter asiaticus. So far, there is no cure.

    Like other crops, citrus crops are susceptible to a variety of diseases and pests. One reliable way to fend off those threats is to graft the fruit-producing part of a tree (the scion) to the lower trunk and root system (the rootstock) of a different tree that has been bred to resist the disease or pest. Rootstocks are also used to obtain specific tree sizes, yields, and fruit quality, among other goals.

    A 6-year-old Owari Satsuma Mandarin tree on US-942 rootstock developed by ARS. In this trial, US-942 was the highest yielding rootstock, averaging more than 300 pounds of fruit per tree (Photo by Jake Price, University of Georgia).

    With ARS’s long history of helping growers keep their groves healthy and productive, the agency had the expertise required when HLB appeared. To quickly address the problem, the ARS citrus breeding project was refocused in 2005 partly to develop new, HLB-tolerant, highly productive citrus rootstocks.

    Led by Kim Bowman, a plant geneticist in the ARS Subtropical Insects and Horticulture Research Unit in Fort Pierce, FL, the team released 12 new HLB-tolerant citrus rootstocks between 2007 and 2018. Before and after the releases, Bowman conducted dozens of field trials to evaluate and validate the rootstocks’ performance, providing the scientific data needed to demonstrate their potential and gain industry acceptance. These rootstocks, all with the prefix “US,” have since become a key component in the survival of the Florida citrus industry.

    ARS plant geneticist Kim Bowman in front of 5-year-old Valencia orange trees on HLB-tolerant rootstocks he and his colleagues developed (Photo by Diane Helseth).

    Not surprisingly, demand for the rootstocks was extremely high, and growers also needed assurances that they’d be getting the real deal. Bowman arranged for the plant material to be certified disease-free by the Florida Department of Agriculture, paving the way for the rootstocks to be commercially propagated on a large scale.

    Bowman and his colleagues have also done a great deal of research on rootstock propagation. Even though most common citrus rootstocks can be grown uniformly from seeds, it takes several years for a young tree to produce a lot of seeds, and the seeds of many new rootstocks don’t grow into true-to-type plants. The scientists have shown that using plant cuttings or tissue culture is an acceptable alternative to starting new rootstock trees from seed, and it’s a much faster way to create hundreds of thousands of plants.

    The use of these alternative methods has dramatically increased propagation for some of the new rootstocks, so that nurseries are not limited by seed supply.

    From 2018 to 2020, the HLB-tolerant “US” rootstocks were used to produce nearly 3 million new citrus trees, or about 37 percent of all trees propagated in Florida. These rootstocks have also proven effective in areas affected by other diseases besides HLB. The rootstock “US-942” demonstrated the most consistent outstanding performance in field plantings and was the most popular rootstock in Florida from 2018 to 2020, with about 1.8 million trees propagated during that 2-year period, or about 22 percent of all propagations.

    For more information, visit Citrus Rootstocks.—By Sue Kendall, USDA-ARS Office of Communications.

  • CA Almond Acreage Continues on the Rise

    The Almond Board of California (ABC) is releasing two California almond industry acreage reports: USDA’s National Agricultural Statistics Service (USDA-NASS) 2020 California Almond Acreage Report including the 2021 preliminary bearing acreage, and Land IQ’s 2021 Standing Acreage Initial Estimate (bearing acres, only). These reports are being issued side by side to improve industry reporting methods and provide a more robust picture of California’s almond acreage.

    USDA-NASS reports a continued increase in California’s almond acreage in 2020. Bearing acres, or orchards that have matured enough to produce a crop, are estimated at 1.25 million acres, up 5.9 percent from 2019. Total almond acreage, including non-bearing trees, is estimated at 1.6 million, up 5.3 percent from the previous year.  Nonpareil continued to be the leading variety, followed by Monterey, Butte, Carmel, and Padre.

    Land IQ’s initial estimate for total bearing acreage in 2021 – which reflects standing acreage that will be productive during the 2021/2022 harvest – is 1,323,722 acres.  This estimate takes into account both young orchards coming into production and orchards removed or estimated to be removed.

    “California almond bearing and non-bearing acreage continues to increase indicating almond production will also rise in coming years. Demand has consistently been very strong during this crop year with global shipments YTD (August 2020 – March 2021) up 17.7%, as production crossed the 3 billion pound threshold for the first time,” said Richard Waycott, president and CEO of the Almond Board.

    All export regions of the world have reported strong numbers, with shipments to China/Hong Kong up 59% year to date (YTD), South Korea up 45% YTD, India up 51% YTD, and Western Europe up 12% YTD, as compared to a year ago.

    USDA-NASS’s acreage report is the first of three annual reports, including the Subjective Estimate released in May and Objective Report in July. These reports are commissioned by the Almond Board to provide statistical transparency to industry stakeholders around the world.

    Each USDA-NASS California Almond Acreage Report includes estimates on bearing, non-bearing and total acreage, in addition to data organized by variety, year planted and county. A major source of data for this survey is almond growers’ voluntary responses to mailed questionnaires distributed by USDA-NASS, with consecutive telephone and field follow-up. To arrive at the estimated almond acreage, USDA-NASS compares its almond acreage database with the 2017 Census of Agriculture, pesticide application data maintained by County Agricultural Commissioners and the California Department of Pesticide Regulation, in addition to data collected on the 2020 Almond Nursery Sales Report, which this year USDA-NASS released in conjunction with the California Almond Acreage Report, and Land IQ assessment.

    In 2018, ABC first commissioned Land IQ, a Sacramento-based agricultural and environmental scientific research and consulting firm, to develop a comprehensive, living map of California almonds. The map is the result of nearly a decade of research, and because Land IQ’s approach does not rely on surveys or extrapolation, it has an accuracy of 98% or greater. Beginning in 2019, ABC began a mapping process with Land IQ in which two acreage estimates will be released annually: the initial estimate of bearing acreage in the spring and the final estimate, with both bearing and non-bearing acreage for the same production year, delivered in the fall. In addition to the acreage estimates, Land IQ will annually produce an estimate of removed acreage.

    This year, Land IQ’s spatial analysis shows that between September 1, 2020, and March 31, 2021, 44,303 acres were removed and estimates that an additional 3,500 acres will be removed from April 1 to August 31, 2021, for a total estimate of 47,803 acres removed.

    Starting in 2020, Land IQ annually provided its initial estimate to USDA-NASS to fine-tune the official California Almond Acreage Report and other forecasts. The USDA-NASS reports and estimates remain the official Almond Board statistics provided for the California almond industry.

    On Wednesday, May 12, 2021, USDA-NASS will release the 2021 Subjective Estimate, which provides an initial forecast of the upcoming crop. Data within the Subjective Estimate is based on opinions obtained from almond growers in a survey sent by USDA-NASS. Almond growers will soon receive the USDA-NASS survey and are encouraged to participate. On Monday, July 12, 2021, USDA-NASS will release the 2021 Objective Report. This report collects data later in the growing season, closer to harvest, and is based on an actual count of nuts on the trees. — Almond Board of California

  • Water & Small Fruit Scientists Named to ARS Hall of Fame

    Two scientists have earned a place in the Agricultural Research Service (ARS) Science Hall of Fame for their pioneering and impactful research in small-fruits breeding and remote sensing for improved irrigation water scheduling.

    Chad E. Finn (posthumously) and William P. Kustas will be inducted in a virtual ceremony today rather than a physical event due to ongoing COVID-19 safety precautions. ARS established the Science Hall of Fame in 1986 to honor senior agency researchers for outstanding, lifelong achievements in agricultural science and technology.

    “Our two inductees exemplify the scientific excellence that has made ARS a premier research agency and world leader in addressing important issues facing agriculture today,” said Acting ARS Administrator Simon Liu.

    A plant geneticist at the ARS Horticultural Crops Research Laboratory in Corvallis, Oregon, Finn, who died December 17, 2019, is being posthumously honored for his outstanding and sustained contributions to the advancement of small-fruits crop research. His accomplishments include the development and release or co-release of more than 57 blackberry, raspberry, blueberry and strawberry varieties, some of which have become industry standards generating more than $450 million in fruit and plant sales over the past 10 years.

    Finn’s research endeavors have led to a small-fruits germplasm program that’s considered among the world’s most diverse and extensive, spanning several genera of plants including Rubus, Fragaria, Vaccinium and Actinidia. His discoveries provide a greater understanding and characterization of wild species in these genera as well as their importance as novel sources of genetic variability and useful traits such as aphid resistance and fruit processing quality.

    Finn also led an international black raspberry research project that developed a draft black raspberry genome—the first in the genus Rubus. Similar genomic efforts are underway in other berry crops. Throughout, he was a mentor to graduate students, avid presenter and participant on numerous committees and associations.

    Kustas, a hydrologist at the ARS Hydrology and Remote Sensing Laboratory in Beltsville, Maryland, is being honored for scientific accomplishments that include using satellite data with computer models for mapping evapotranspiration (ET)—the process of plant water use through transpiration and water loss or evaporation from the soil.

    In addition to monitoring ET, plant stress and drought, other applications of the models arising from Kustas and colleagues’ pioneering research include precise targeting of irrigation water to crops, including the vineyards of E&J Gallo Winery in California’s Central Valley. There, as part of the Grape Remote-sensing Atmospheric Profile and Evapotranspiration eXperiment (GRAPEX), Kustas and collaborators from NASA, Utah State University, University of California-Davis and Gallo are helping the winery better track soil and vine moisture levels with a view to reducing irrigation water use by up to 25 percent. Potentially, this reduction could translate to significant economic savings as well as contributing to sustainable groundwater management—a benefit the GRAPEX team expects could apply to other Central Valley vineyards as well as California’s nut orchard industry, which spans 1.5 million acres. “ET Toolkits” resulting from the project are also being readied for use in other water-limited western states.