Almonds are an edible seed from the Prunus genus. Almond trees do best in moderate Mediterranean climates with cool winter weather, and the almond industry is a major contributor to California’s economy, with almonds being the state’s top ag export.
Market Size
Global Almond Production
According to Food and Agriculture Organization of the United Nations, the world production of almonds in 2022 was 3.734 million tons, with production led by the US, Australia, Spain, and Türkiye. The top ten producing countries in the world produce approximately 86% of the global almond supply. In 2022, the global almond crop was occupied approximately 2,385,642 hectares.
Country | Production, 2022 (tons) | Area Harvested, 2022 (hectares) | Yield, 2022 (100 g/ha) | Percent of global total |
United States | 1,858,010 | 546,332 | 34,009 | 50% |
Australia | 360,328 | 57,872 | 62,263 | 10% |
Spain | 245,990 | 761,660 | 3,230 | 7% |
Türkiye | 190,000 | 63,266 | 30,032 | 5% |
Morocco | 175,763 | 226,213 | 7,770 | 5% |
China | 104,000 | 28,569 | 36,403 | 3% |
Iran | 88,561 | 73,857 | 11,991 | 2% |
Italy | 74,590 | 53,890 | 13,841 | 2% |
Tunisia | 70,000 | 194,785 | 3,594 | 2% |
Afghanistan | 64,000 | 37,000 | 17,297 | 2% |
Source: FAOSTAT, find the data we pulled here.
According to the Almond Board of California, the world production of almonds in 2023 was 1.511 million metric tons, with production led by the US, Australia, Spain, and Türkiye. The top ten producing countries in the world produce approximately 99% of the global almond supply. According to the Almond Board, the US had 1,563,336 acres of almonds planted in 2023, which represents the second consecutive year of declining acreage in the US in almonds (down from a peak of over 1.66 million).
Country | Production, 2023 (tons) | Percent of global total |
United States | 1,156,790 | 77% |
Australia | 103,381 | 7% |
Spain | 100,000 | 7% |
Türkiye | 25,000 | 2% |
Portugal | 25,000 | 2% |
Morocco | 18,500 | 1% |
China | 15,000 | <1% |
Chile | 14,150 | <1% |
Tunisia | 12,000 | <1% |
Italy | 11,500 | <1% |
Greece | 8,000 | <1% |
Iran | 6,000 | <1% |
Source: the Almond Almanac, by the Almond Board of California
The US Department of Agriculture’s Foreign Ag Service provides additional accounting of global almond production, which records production data for a similar time period of mid-2022 to early 2023. This data is collected by USDA independent of the UN Food and Ag organization.
By all counts, the US is by far the dominant producer of almonds globally, followed distantly Australia, and then by EU countries (Spain and Italy) and other Eurasian producers. Globally, almond production has been on the rise in recent decades, with a slight contraction noted since 2020, mostly due to declining acres in the US, but also due to some acreage reduction in the EU and Australia.
One driving factor of recent acreage contractions is the relatively weak global price for almonds that’s been pervasive in recent years.
The peak in value for almond production occurred in 2014, when the US crop was valued at around $7.4 billion. These prices were driven up by a drought during the 2013-14 season, as well as growing consumer demand for almonds around the world. However, economic conditions in export markets combined with better crop conditions after 2014 contributed to the price decline, which has continued in the intervening years.
US Almond Production
According to the USDA National Ag Statistic Service, California, the only state in the US with a meaningful commercial almond industry, produced about 2,540 million pounds of almonds in 2022 on approximately 1,350,000 acres (with an additional 280,000 almond acres not currently bearing fruit). Though value of production figures are not yet available for 2022, in 2021, when yields where higher (2,210 lbs/acre versus 1,880 lbs/acre) but acreage was slightly lower (1.32 million to 1.35 million), the US crop was worth approximately $5,028,320,000. The California almond industry includes around 7,600 growers and 100 handlers (brokers, packers, shippers, etc.). The majority of Californian almond farms are 100 acres or less.
Five counties within the state of California; Fresno, Kern, Stanislaus, Merced, and Madera accounted for 75% of the total bearing acreage, though in 2022, 16 counties in total were home to some amount of almond production, mainly in the Central Valley.
Though California is dominant in US production today, extremely small-scale almond production also exists in Arizona, New Mexico, and Texas, and as climates and conditions continue to change, states like Idaho and some in the southeast are becoming increasingly interested in exploring almond production.
Despite price declines in recent years, almond acreage in the US has not declined, and is in fact still growing slightly year over year. This fits into a long term growth trend in almond production in the US, which due to the long time horizon involved in investing in and producing an almond crop, often does not respond strongly to short term trends. Macro trends, from the rise of a global middle class to growing consumer interest in eating whole foods like nuts, are more serious drivers of almond production.
Varietals
All almonds fall into one of two categories; bitter and sweet. Sweet almonds are the primary type used for cooking, and as a source of almond oil and almond meal. Bitter almond oil is used to make flavor extracts. Though there are more than 30 almond varieties commonly planted in the US (and 70 around the world), only five are currently planted on more than 50,000 acres in the US, and four, Nonpareil, Carmel, California types, and Mission types, make up 85% of all almonds grown in California.
Top Almond Varieties in the US
California produces about 30 varieties of almonds, with more than 98% of production represented by 13 major varieties. However, a few varieties are particularly dominant in terms of acres planted and uses in production.
Nonpareil (sweet) is the most popular variety of almond in the US for commercial cultivation, accounting for about 40% of annual production. Nonpareil are an attractive variety due to their thin, soft shell that’s easily shucked, revealing a large drupe (the meat or kernel of the nut) that’s ideal for snacking or cutting applications. Nonpareil almond is a paper or soft-shell variety with an attractive kernel of a medium size, uniform shape, smooth surface and light (blond) colored skin. Nonpareil receives a premium price due to high market demand. Other varieties with similar characteristics are sometimes marketed as Nonpareil Types, which include Sonora, Independence, and Supareil.
In a multi-year study carried out by the California Almond Board, Nonpareil was identified as the most productive variety amongst dozens tested, in addition to having relatively low rates of producing doubles (two kernels developing in one shell), and blooming at a desirable time on average (not too early). Despite continuous, extensive, and ongoing breeding efforts, Nonpareil is also a particularly old variety, originally produced in 1879. Harvest of Nonpareil usually takes place between August and October, depending on the location.
According to USDA NASS, there were 399,489 acres of Nonpareil almond trees standing in the US in 2022.
California type almonds are another popular group of varieties in the US for commercial cultivation, with Monterey and Carmel (two California type varieties) being the second and fifth most commonly planted varieties in the state. California type almonds tend to have slightly more diverse shapes than Nonpareil, including having longer drupes and more wrinkled surfaces, which makes them preferable for slicing and slivering applications. They also tend to have more variation in flavor profile, with a greater range of possible astringent, bitter, sour, and sweet components, making them a slightly less premium variety, though often preferred for roasting and blanching applications.
California varieties, including Monterey and Carmel, are known for early blooming and high yield potential, as much as 60-85 pounds per tree annually, or nearly 4,000 almonds per tree (which falls just slightly below Nonpareil). These varieties are often also used as pollinator trees for Nonpareil varieties. Harvest of California types like Monterey usually takes place late in the season, usually 5-6 weeks after Nonpareil, depending on the location.
Most major varieties produced in California except for Marcona can be marketed as California type. These include all Nonpareil type varieties; some “Mission” type varieties, and others.
According to USDA NASS, there were 163,757 acres of Monterey almond trees standing in the US in 2022.
Mission type almonds are another popular group of varieties in the US for commercial cultivation, with Butte (a Mission type variety) being the fourth most commonly planted variety in the state. Mission type trees tend to produce hard-shelled nuts with the shortest and widest drupes and deep wrinkles, making them desirable for snack mixes, as they end to hold seasonings well. They also tend to have the darkest appearance and thus the strongest flavor profile among the main types, making them excellent for roasting (though not well-suited for blanching). Mission, Fritz, and Padre are other popular Mission types. For years Butte, Padre, and Fritz have also been marketed under “California” type as they share the blanchable characteristic that defines that type. Production of Mission and Ruby are diminishing, while Marcona has only a small share of production.
Mission varieties, including Butte, are known for high yield potential, nearly 4,200 almonds per tree. Harvest of Mission types usually takes place latest in the season of all varieties, as much as 45 days after Nonpareil, depending on the location.
According to USDA NASS, there were 163,757 acres of Butte almond trees standing in the US in 2022.
Addressable Market
Market
Based on the Research and Markets Report, the global almond market was worth $8.156 billion in 2020 ($9.59 billion in 2023) and will grow to about $11.814 billion (at a CAGR of 5.44%) by 2027. The global market for almonds is facing positive headwinds as consumers have a good perception of their positive health benefits (especially as a whole food), but also as an ingredient in processed foods, especially alternative milks, oils, and flours. In the US, almonds are the most consumed tree nut. Almonds are also relatively shelf-stable and don’t require refrigeration, they are easily transportable and an attractive snack, and are generally accepted around the globe. In the US, almonds are leading the pack in terms of driving increases in tree nut consumption.
On the production side, especially in California, challenges continue to mount—from water availability to pollinator issues, which has prevented the US industry from reaching a state of dramatic oversupply. According to the USDA’s Foreign Agricultural Service, US producers exported $4.5 billion worth of almonds in 2022. This means US producers shipped 2.56 billion pounds of almonds in 2022/2023, down slightly from the previous marketing year. Between 60-70% of the total US almond is exported, meaning that the total value of US almond production is $7 billion.
The true addressable market for almond harvest and management technologies will be approximately equal to the cost of labor needed to manage and harvest almonds. So to determine the value of a specific technology to the sector, it’s necessary to understand the costs associated with almond production.
Current Challenges
Grower Challenges: Production
Successful almond growers manage a complex production system that takes careful and continuous management over a variety of plant life-stages. From the origination of an almond production business, the planning process until the first harvest can be around 3 years, with the orchard reaching its productive peak between 5 and 8 years. A commercial almond orchard generally only remains productive for 20 to 25 years before it is removed and replanted. Managing production and cash flow over that time horizon is often a challenge.
- There are many factors to consider when planning and establishing an almond orchard including: soil type, pest and disease history, drainage, water access and quality, and weather. Soil testing is a critical first step in determining whether a given acre is well-suited to almond production.
- Water access may well be the primary concern in most of the Californian almond growing regions— with a chief question being whether irrigation water is to be drawn from surface sources or from a well. Both options have their benefits and drawbacks; namely, surface water can be less expensive to pump, but can be cut when water is not available during periods of drought. Conversely, growers generally have more access to and control over wells, though there are risks related to land subsidence due to over-pumping and the possibility of the well drying up.
- After water access is established, the irrigation system should be planned before planting. Popular irrigation systems amongst California growers include double-line drip irrigation, micro-sprinkler irrigation, or solid set sprinkler irrigation.
- A grower has some latitude to decide how an orchard is laid in terms of design and tree density. Factors such as variety, site vigor, irrigation method, and soil type will inform the decision, with orchards usually hosting between 74 and 180 trees per acre. The spacing between trees within a row and between trees across a row is similarly determined, though harvest method, equipment size, and other cultural practices are also determining factors. Some common orchard configurations are square (ie. 22’ x 22’) or rectangular (ie. 22’ x 18’) patterns.
- Close plantings (more trees per acre) due tend to lead to full production sooner in an orchards life, and can be easier to spray and harvest. However, this style also leads to higher costs, shorter orchard lifespans, and can be hazardous to equipment. California types tend to be more successful in closely spaced orchards than other varieties. Nonpareil, conversely, tends to be more successful in more widely spaced orchards.
- When selecting an almond variety, growers will choose varieties that they have a preference for and which they feel are well-suited for their farm’s unique conditions and grower preference. However, two or more varieties that have overlapping bloom periods must be planted within the orchard to ensure pollination. The California almond industry is also developing new almond varieties, including some that are more self-compatible.
- Orchards are generally established using potted trees, which are either planted and staked by hand or by mechanical means. Trees are put in place, trimmed, and the young trunk is protected with a tree guard to prevent damage from rodents, herbicides, and sunburn.
- Some number of trees per acre will die annually, and need to be replaced in late winter.
- Pruning begins in the first year. Trees are topped as part of the planting process/cost. Trees will be suckered later the following summer, then training and pruning occur each year in the winter through the fifth year. After that, winter pruning occurs only in alternate years. By the second year, pruning must be removed from the orchard and burned, rather than shredded.
- Pruning is carried out by hand, and serves to remove dead and diseased wood and control tree height. Pruning also changes resource and hormone balance within the tree, though the direct physiological response depends on the timing and type of cut. Generally pruning is carried out between October and January.
- The aim of training in the early years of the trees life is to develop good structural strength in primary branches (to support hardy fruit loads), to guide the tree to fill its available space in the orchard, and to manage growth to encourage early production.
- Pruning and training is a critical activity to protect the long term productivity of an almond orchard, and is best carried out by pruners with knowledge and experience. Each tree must be pruned in a relatively customized way to promote tree health and vigor.
- Pruning and training should help maximize light interception by tree leaves, while still allowing some light to reach the orchard floor.
- Tree water usage depends on the tree’s age, size, species, climate, and soil type. But other factors, including the energy cost of pumping water, the cost of water itself, a growers irrigation strategy, and any rules or restrictions put in place by local water districts will influence the amount of water that growers apply.
- Though some essential water each year will come from rainfall and existing soil moisture, almond orchards in California will still likely need to irrigated about once per week from April through October.
- Frost protection is an annual activity starting in the fourth year, generally in February or March. It involves the application of irrigation water to prevent damage to the trees, and the regularity and amount will likely vary year to year.
- There are multiple kinds of standard irrigation systems in use in California, though there is certainly a growing preference for the most water-efficient systems. These include double-line drip systems, micro-sprinkler systems, and solid set sprinkler systems.
- Salinity management is a key issue for almond growers, due to the tendency of dissolved salts (sodium, chloride, and boron) to concentrate in irrigation water, which is then transferred to soils. Exposure to too much salt can lead to toxicity in almond trees, which can cause root dieback and leaf loss. This problem is particularly pronounced in shallow or poorly drained the soils.
- Modern irrigation management generally involves water budgeting, soil water measurement (especially through the use of probes), and smartphone apps, and growers will increasingly hire specialized irrigation managers to plan and manage water allotments, scheduling, and quantity allocations during times of shortage.
- The grower will hire a commercial beekeeper to set out hives each season after the second year, gradually increasing from approximately 1 hive per two acres in the third year to 2.5 hives per acre by the sixth year. The grower rents these bees on a per hive basis for a given period of time.
- Fertilizer and soil amendments are applied in most orchards annually, through a combination of drip line or through foliar application. Fertilization rates vary depending on a variety of factors, including soil type. Fertilization also varies more in the first six years of the orchards life than it is likely to during the more productive later years.
- Leaf and tissue samples are regularly taken for nutritional analysis during the summer.
- There are many pests, including insects, weeds, diseases, and invertebrates that almond growers will have to contend without throughout an ordinary growing season. Read on for more on the products and practices growers use to combat these threats. For more on the pests themselves and how they effect the crop, see Considerations for Pests and Diseases below.
- Managing the orchard floor is critical for almond growers because almonds are retrieved from the ground. There are many strategies to control weeds on the orchard floor, including no-till ground cover that’s mowed, planted cover crops, tillage, or strip or complete weed control, where weeds on the orchard floor are managed through spot sprays of herbicides, as well as cultural practices like discing and mowing. These practices and certain herbicides are used only at certain times, either during the dormant season or early in the orchard’s productive life.
- Insects in the orchard are managed through insecticide or biological treatments, often multiple times per season. These might be applied with a handgun or airblast sprayer earlier in the orchard life.
- Disease in the orchard is managed with brand name applications designed to address specific diseases or fungus.
- Vertebrates are controlled with poisoned bait (specifically for gophers and ground squirrels).
- Growers will likely hire a Pest Control Advisor (PCA) or a crop consultant to monitor their orchard for pests, nutritional deficiencies, and other agronomic problems. This expert will likely also recommend products and practices tailored to an orchard’s specific needs.
Almonds may be harvested by hand during their first harvest, but most orchards are harvested with mechanical shakers, and then mechanically swept, picked up, and hauled to the huller. This process might be done by the farm itself with owned equipment and hired labor, or it might be contracted out to a custom almond harvester. Labor is required to operate the equipment, but also to hand rake nuts that are missed by the sweeper and to do other support tasks.
- Almond harvest generally runs from mid-August to October, depending on geography, location, and climatic factors.
- The harvest process begins with the shaker head attaching to the tree trunk, which then shakes the trunk, causing the almonds to fall from the tree onto the ground. From there, nuts are allowed to dry naturally for anywhere from a few days to two weeks (to achieve a hull moisture content of about 10-12%) and then nuts are blown from around the tree. A pickup machine then gathers the nuts and loads them to be hauled out of the orchard.
- One acre of almonds is likely to yield more than 2,000 pounds of almonds, depending on the variety and other factors.
- Almonds are then hauled to a huller/ sheller facility. If not taken directly for processing, almonds may be stockpiled, as growers hold on to almond stocks to await greater demand in the market. Almonds can also be sold in-shell.
- The overall size and scale of the farming operation, and what (if any) other crops/varieties the farmer grows. Number of acres and how vertically integrated an almond business will have significant impacts on how the management decisions are made within the orchard.
- Whether the land is owned or rented by the grower.
- Infrastructure availability (road access, irrigation systems, building locations, etc.)
Grower Challenges: Economics
Common Almond Farm Business Model
Almond growers sell shelled or unshelled almonds for consumption and processing to wholesalers, retailers, food manufacturers, and other buyers, or in rare cases, process nuts themselves and sell ingredients (dry roasted, blanched, sliced, chopped almonds, etc.) or finished products (snack mixes, bars, flour, milks, etc.). If unshelled or otherwise processed almonds are sold, excess casing (hulls and shells) can provide a small additional revenue stream, as they are used in the livestock industry as feed and bedding.
Therefore, the success of an almond orchard business will depend on the yields achieved, the quality of the product, the price, and the distribution networks they are able to access. Additionally, almond growers must consider other costs such as labor, fertilizer, pest management, land costs (including land rent if leasing), as well as the potential for unexpected weather or market conditions.
Growers sell almonds in the US by the pound or ton. After almonds are taken to the sheller/huller for processing, they will then move on to the handler to be sized, sorted, and graded and stored in bulk containers until sold, shipped, or further processed.
Packaging varies based on buyer demands— though in-shell almonds are generally packed in sacks, shelled almonds might be packaged in cartons or fiber bulk bins, while more highly processed almonds (cut, roasted, blanched, etc.) might be packed in plastic containers or bags to protect against moisture and oxygen.
There are a few different channels that growers commonly use to deliver almonds to market. The most common is to contract the sale of almonds, with a price per unit and total quantity determined in advance of harvest. These contracts may be with wholesale produce packers, shippers, food manufacturers, or directly with retailers (especially in the case of larger farmers, packing and shipping functions may be carried out by the grower). Alternatively, growers can store excess almonds for multiple years as they await a buyer or better market conditions. Finally, almonds can be sold directly to consumers through on-farm sales or farm stands, though a very small amount of the total US crop is moved in this fashion.
The business model for almond production requires significant upfront investment that must be earned back over the course of a orchard’s productive life. Though trees will start producing nuts as early as the fifth year (or as late as the twelfth), they often don’t come into their productive prime until after their seventh or eighth season. As the orchard ages, yield and quality generally decline and the orchard will need to be removed and replaced after about 25 years. There is an expectation that as much as 1% of trees will need to be replaced annually.
The yield of the average acre of almond can vary significantly based on a number of factors, especially variety and geography, though the average yield per acre in 2022 was 2,040 lbs, according to USDA. Many factors also determine the actual price per unit of almonds a given grower receives (though the average in 2021 was $1.76/lbs USD). Because of the difficulty of determining these two factors, in addition to the impossibility of generalizing about input costs and other expenses on a particular operation, determining in which year an orchard might become profitable is not possible to generalize.
The price that an almond producer receives is dependent upon variety, timing, quality, and other market factors. Specific quality standards vary by geography and purchaser.
Almond Crop Budget
We highly recommend taking time to understand crop budgets before having a conversation with a citrus to better understand their needs and costs.
- Crop Enterprise Budget Example #1: Almonds | San Joaquin Valley South
- Crop Enterprise Budget Example #2: Almonds | San Joaquin Valley North
- Crop Enterprise Budget Example #3: Almonds | Sacramento Valley
- Crop Enterprise Budget Example #4: Almonds | San Joaquin Valley North (Organic)
- Crop Enterprise Budget Example #5: Almonds | Sacramento Valley
It is critical to understand that farm economics and budgets vary widely between individual farm operations, as well as by year, as a result of a landscape of factors, from water availability to input costs. Because of these variations in cost of production, it difficult to generalize about the economic status of a given grower or region.
Almond Costs
Though there are many fairly standard expenses on in an almond operation, the magnitude of related costs varies widely based on geography, varieties grown, and weather among others.
- Capital costs may include;
- Land (rent or purchase)
- Property alterations (like laser-leveling prior to grove planting)
- Irrigation systems (including installation)
- Initial tree plantings
- Production and harvest equipment, facilities, and vehicles (including wind machines, vehicles, gypsum machines, etc.)
- Variable costs may include;
- Water (generally calculated per acre-inch)
- Replacement trees (~1% annually)
- Energy and fuel costs
- Equipment/facilities maintenance
- Inputs (including fertilizer, pesticides and other crop protection, etc.)
- Auditing, compliance, and inspections (often charged either per pound or per acre)
- Property taxes
- Insurance
- Labor costs
- Though labor is still a meaningful expense on most almond orchard balance sheets, the fact that the sector is highly mechanized and efficient means it is not as labor-intensive as many other specialty crops.
- Notably, no single machine completes the full harvest task, and generally there remains work to be done by hand, especially equipment operation and sweeping up nuts missed by the sweeper. It is becoming increasingly common for growers to hire custom labor crews to hand pole remaining nuts from the tree (also called “knocking mummies”) and rake additional missed nuts into the windrow. These workers are not employed, and likely not trained, by the grower themselves, but are managed by a crew boss on behalf of a labor contractor.
- Other tasks on the orchard can be more labor intensive than harvesting, especially pruning and planting. Pruning is a task that occupies a relatively short period of time each year, but is critically important to be carried out well. Planting, on the other hand, is only handled a few times a century, and is often outsourced to custom planting businesses who provide labor— rather than growers having to hire workers for this task themselves.
- There are many other labor roles on the orchard, including those who carry out tasks like irrigation, mowing and disking, and pesticide application. Some of this work can also be hired out to custom businesses that will, for example, provide crop protection application services for a fee, providing the machines and workers in the process.
- An almond farm’s labor force is usually composed of a mix of salaried managers, directly hired full-time, part-time, and possibly some H-2A temporary workers, and indirect laborers who work for a hired labor/harvest contractor. Additionally, growers may also hire contractors like pest control or crop protection advisors, accountants, and others.
- In California, minimum wage for agricultural workers is $15.50 an hour, with additional requirements around overtime and days off. Actual labor costs as predicted by UC Davis in California almond growers is around $26/hour for machine operators and $18/hour for general laborers, including employers’ share of federal and state payroll taxes, workers’ compensation, and other benefits.
Key Pressures and Opportunities for Almond Growers
The availability of water is a top concern for California’s almond growers. Almond trees are a water-sensitive crop that need finely-tuned amounts of water to perform productively. Efficient production, and therefore orchard profitability, often comes down to the benefits and costs related to water.
In recent decades, California has suffered a number of significant droughts, many of which have lasted for multiple years. These have led to limitations on surface water access, even for those with the most senior water rights.
Growers have increasingly turned to ground water pumping, though increasingly, issues with land subsidence (the physical sinking of the land due to absence of sub-surface water) have led to greater scrutiny and regulation on the use of ground water for agriculture in the state.
Finally, high levels of irrigation can lead to additional challenges, like the build-up of salts in the soil. This can degrade the quality of soils and, when it becomes extreme, can prove toxic to tree roots, causing yield reductions and endangering orchard health.
Research and technology can help develop water-efficient crop production techniques and strategies to address water scarcity/overabundance challenges while aligning with upcoming regulations on water usage. Additionally, tools should be developed to support crop management strategies that enhance economic sustainability even in regions with limited water resources (generally, but improving water-use efficiency (WUE)).
Growers increasingly rely on advanced software and hardware tools to precisely manage their irrigation water. Technological emphasis should be placed on developing and implementing irrigation and nutrient automation and precise methods to estimate actual tree evapotranspiration and stress at both individual tree level and scalable plot levels (e.g., 40-acre maps). This will enhance water-use and nutrient efficiency and optimize irrigation and nutrient practices.
Advanced irrigation systems that bring together the advantages of drip irrigation and similar water-saving delivery methods with soil moisture sensors have helped growers reduce their water usage and avoid some the challenges inherent in applying large amounts of irrigation water. Additionally, data from remote sensors (drones, satellites, etc.) have been added to more local data from sensors to create advanced irrigation planning and forecast tools so that growers can determine, often days in advance, exactly how much water a given orchard will need— creating greater opportunity for growers to carefully plan an efficient irrigation schedule.
Technologists are looking to further advance irrigation technology with the adoption of control technologies, which allow growers and irrigators to control pumps and valves on irrigation systems remotely. By doing this (rather than having an employee manually turning valves, checking water pressure, etc.) new possibilities are opened up around how irrigation can occur, especially with respect to frequency.
The farther future of control systems opens the door to autonomous irrigation, where at some point, highly refined sensors will be able to communicate directly with control technologies, so that an orchard, or even an individual tree, can receive water exactly when they need it without direct human intervention.
Increasing the water efficiency of the trees themselves, both through novel breeding and through genetic manipulation, are also potential solutions going forward.
Costs are on the rise for nearly every input to almond farming, from land costs to labor, fertilizer to equipment. Crop prices do not necessarily reflect that steadily increasing cost of production that growers face, and so savvy farmers look for ways to reduce the costs of inputs whenever possible.
Labor has become the focus of significant interest in reducing costs, especially as costs (both direct and indirect) related to labor continue to rise and growers see increasingly viable solutions to reducing the number of people employed in the orchard.
Research and technologies focused on labor-saving tools and practices can aid in mitigating the impact of labor shortages on farm operations. One strategy that almond growers are enthusiastic about in this realm is mechanical and autonomous tools, especially the potential use of weeding technology for orchards with irrigation systems which could offer innovative solutions for efficient and eco-friendly weed management.
Though there are currently several mechanical tools available in the almond orchard, there is still labor costs that could be ameliorated through automation and mechanization— including costs related to planting, pruning, and irrigation are also targets for advancing mechanization and automation, though there already are some autonomous tools available for tasks like chemical application, mowing, and disking (from companies like Monarch Tractor, Blue White Robotics, InsightTRAC, and FieldIn).
Technologists designing for key issues in this field should consider unique features of the industry.
- All automation or mechanization tools will likely require long battery lives, sturdy, rugged construction, and other reliability refinements to deal with dusty field conditions and being used around the clock to travel relatively long distances.
- In most cases, farmers rely on mechanics on-site and do not have access to electronic/robotic engineers.
- Crews who use tools in the field often do not speak English fluently and may not be able to read or write. Crew members may also not be uniformly able to communicate to each other due to language barriers.
- High-speed internet and high-bandwidth cellular services are far from a given in rural areas.
- Orchard factors including row and tree spacing will vary, based on (among other things); variety, orchard architecture, climate, and preferred management practices. The amount of space between rows affects sunlight penetration, canopy management, and equipment access.
- Different varieties can have variable growth habits, tree vigor, and healthy canopy sizes. This can affect everything from row spacing to harvest practices.
- Equipment and labor access are factors that are commonly considered when determining row spacing during the orchard planning process, however, altering row spacing during the productive life of the orchard is nearly impossible.
- Mechanical harvesters that shake the trunks of almond trees can be utilized to fell nuts onto the ground where they are left to dry and then retrieved by a sweeping machine.
- Pruning tasks can be must more custom to each particular tree, and generally require a higher degree of expertise to be done at a high level of quality.
- Machine vision will likely be a critical component of these types of innovations, which could also extend into crop protection spraying of weeds and other pests at the in-field level.
Costs are on the rise for nearly every input to the almond orchard, from land costs to labor, fertilizer to equipment. Almond prices do not necessarily reflect that steadily increasing cost of production that growers face, and so savvy farmers look for ways to reduce the costs of inputs whenever possible.
However, some costs are more avoidable than others. For the time being, a few regions in California’s Central Valley are the premier locations for almond production, and thus reducing land costs by moving an orchard elsewhere is not necessarily feasible. Reducing outlay for fertilizer, crop protection chemistry, water, and equipment is more likely, even though these inputs have volatile pricing due to the global nature of their markets, aren’t easily substitutable, and are more or less essential to harvesting a healthy crop, especially giving unique annual conditions.
Plus, state and national regulatory conditions, alongside increasing consumer scrutiny, demands that almond growers continue their work while minimizing their environmental impact, especially through the reduction in use of certain inputs (like pesticides).
Therefore, research and technology should explore cost-effective alternatives especially around nutrient needs (fertilizers) and pest management methods to reduce input use and expenses. In particular, improving nitrogen-use efficiency (NUE) should be a priority.
- Genetic Research for Resilient Rootstocks and Varieties: Expediting the identification and development of rootstocks with reduced input requirements, tolerance to biotic and abiotic diseases, and varieties that combine disease and insect resistance with high productivity and commercial qualities is a top priority for almond growers.
- Precision Yield Prediction: Research efforts should be directed towards precision technology to predict and map expected yields early in the growing season. Accurate yield predictions are crucial for enabling precise management practices and optimizing resource allocation (especially nutrients).
- Management of Soil Pests: Investigation into integrated and effective management approaches for key soil diseases and nematodes can enhance crop health and productivity, especially focusing on biological and cultural pest management for effective control with less pesticide (biopesticides, remote pest monitoring, etc.)
- Overarching needs in pest management include; better ways to manage pests without the use of harsher chemical tools, adaptations of tech to better detect/monitor/treat pest issues, determination of how the use of soil quality/regenerative ag practices affects pests and beneficial insects, genetic resistance to key pests.
- Specific tech needs include; more effective weeders, sniffers/spore counts for early detection, sterile insect and/or pheromone-based mating disruption systems, better monitoring/geospatial monitoring, easier winter sanitation, better understanding of interaction within landscape, post-harvest fumigant alternatives that meet phytosanitary standards, lower risk approaches that work across multiple diseases, resistant rootstocks, better understanding of prevention/early detection, precision management of weeds in middles vs. tree rows, and easier monitoring that accounts for soil variability.
- Smart Sprayers: Development and evaluation of smart sprayers/ new approaches for applying chemistry to trees trees to reduce drift and improve spray coverage. This will lead to more efficient and targeted pesticide applications, helping to minimize the industry’s environmental impact.
- Transition to Sustainable Pest Management: The pressure to shift from conventional chemistry to sustainable pest management methods in accordance with CA 2025 sustainable pest management roadmap necessitates research into effective alternative pest management approaches – spanning genetics to technology to biologicals to integrated farming systems approaches.
- Finding Alternative Non-Fumigant Control and Genetic Resistance: Research should be dedicated to identifying effective non-fumigant control methods and exploring genetic resistance for key soil diseases and pests in order to reduce reliance on chemical fumigation and enhance crop resilience.
- Adoption of off-ground harvesting equipment to reduce dust, pesticide residue, aflatoxin, and improve overall grower economics.
Farmed honeybees are an essential aspect of the almond industry in the United States, and populations of honeybees have been declining for many years. According to one report, American beekeepers lost nearly half of their hives in the 2022 growing season, largely due to the not-well understood phenomenon of “colony collapse disorder,” which generally causes a bee hive to fail completely, leading to the death of a lot of bees.
There are number of known reasons for honeybee declines. The USDA attributes much of the decline in honeybee health to a combination of parasites, disease, poor nutrition, loss of forage habitat, and environmental toxins (including some kinds of pesticides).
During the almond pollination season, between 70-80% of the US’s farmed honeybee population is occupied with pollinating the US almond crop. Without the introduction of these transported bees— most of which spend the rest of the year outside of California— there would almost certainly be a massive yield reduction in the California almond sector as a result of failed pollination. Local, native populations of pollinators are simply not able to pollinate the sheer quantity of almond trees located in the state’s key growing regions within the necessary time period.
Growers are actively embracing more pollinator-friendly practices, including developing bee-friendly habitats within and around orchards, providing clear water or mud (depending on the pollinator) near the orchard, and working directly with beekeepers to address their needs. Practice changes and novel crop protection chemistry will certainly be an element of reducing the instance of colony collapse syndrome going forward.
Other pollinations solutions are also being actively explored. A key focus of technologists has been around monitoring bee health, to help identify and address bee and colony health problems as early as possible. Technologies like the BeeHome by BeeWise, which is a robotic hive that allows for inspection and treatment of hives at a distance. This solution is equipped with precision robotics, computer vision, and AI, making the hive essentially autonomous. Other companies, including Bee Corp, BeeHero, HiveMind, Ubees, and others provide some similar services as they monitor the interior of hives and provide some measurement of bee health and strength. Companies like BeeDar focus on measuring bee health beyond the hive.
Another solution to the bee health problem involves use of alternative types of pollinators. There are other kinds of bees beyond the traditional honeybee variety— including the now relatively common blue orchard bee or orchard mason bees.
There are also pollination solutions increasingly being explored that remove the bee from the equation altogether. Companies like Antles Pollen Supplies and Firman Pollen Co., for example, can apply pollen directly to an orchard using mechanical means. Edete Precision Technologies for Agriculture pursues a similar strategy through a combination of robotic pollination and mechanical pollen harvesting. Drone-augmented pollination is another emerging technology that’s showing some progress.
- Value Addition from Co-products: Studies can investigate ways to derive more value from co-products such as hull, shells, and woody biomass, potentially opening new revenue streams.
Consideration for Pests and Disease
Almond production is susceptible to a range of pests and diseases that can impact fruit and nut quality and yield, as well as tree health and long term viability of an orchard. When exploring solutions for almond growers, care should be taken to avoid increasing opportunity for pests and disease to proliferate throughout the orchards, for example, by being transported on equipment. There are several major points during the course of the almond season when growers need to be particularly vigilante about specific pests, and during which only certain kinds of pest control measures are useful, effective, or allowable. Find more information on recommended Integrated Pest Management (IPM) regimes for almond orchards here.
Insects
- Navel Orangeworm - the primary pest of almonds in California. It has several agricultural hosts such as pistachios, walnuts and pomegranates as well as nonagricultural hosts in the Californian landscape. The female moths lay their eggs on the suture of the almond hull. The larvae hatch, chew through the hull and shell to feed on the nut. There can be more than one larvae found feeding in a nut. Navel orangeworm larval damage can lead to fungal infections such as aflatoxins. Almonds are most vulnerable during hull split. Key control methods include winter sanitation which is the removal of mummy nuts, population monitoring, mating disruption, choosing resistant varieties, early harvest, as well as biological controls, insecticides, and organic methods are also available. Monitoring for navel orangeworm can include egg traps, pheromone traps, and degree-day calculations. Growers will use one or more of these methods to monitor navel orangeworm populations in their orchards.
- Stink bugs - Stink bugs develop in non-tree vegetation on orchard orchards and migrate to trees in the spring, though some types overwinter within the orchard itself. Damage usually occurs from May through July, and effects the kernel, but causing it to become wrinkled and misshapen. Spraying (a broad-spectrum insecticide) is an effective treatment for stink bugs, though it’s important to confirm that the orchard is being effected by the insect, rather than suffering from other physiological problems.
- Leaffooted bugs - Feeding by leaffooted bugs on nuts can cause almonds to wither and abort, to gum internally, or even cause nut drop. Even after the shell hardens, their feeding can cause discolored, wrinkled, or misshapen kernels. It is easy to mistake the damage of leaffooted bugs with stink bugs and vice versa, however, leaffooted bug damage tends to occur earlier in the year, in March and April rather than May, June, and July. Even a low number of leaffooted bugs can cause substantial damage, so application of a broad spectrum pesticide is likely something to consider to target overwintering adults. Unfortunately, these can also be very disruptive to biological control agents like spider mites.
- Carpophilus truncates - A recently detected pest in almonds, this small insect can cause severe damage to almond kernels. The insect overwinters in the soil, and is able to fly up to 3 miles to find a host. Multiple generations can exist in the same year, and high humidity is particularly beneficial to this insect. The pest has also been positively identified in pistachio orchards, and is a known pest in Australia, though is relatively new to US growers. Because little is currently known about how the pest might act differently under US conditions, it is especially critical for growers to practice crop sanitation, especially destroying mummy nuts and maintaining a clean orchard during the winter.
- Ants - specifically the southern fire and and the pavement ant feed on nuts that are already on the ground. Ants can hollow out nutmeats completely. Prevalence of ants is greater in drip- and sprinkler- irrigated orchards, and in orchards with high instance of weeds or with cover crops. Management is primarily carried out through cultural control relating to keeping the orchard floor clean of both plant material and nuts during harvest. Baits and other control measures are also available.
- Spider mites - there are multiple types of spider mites that can be found in almond orchards, though all create damage to trees by sucking cell contents from leaves. Leaves then turn yellow and drop off. Severe infestations are visible by the webbing that spider mites create. Yield impacts and tree damage often result the year after the infestation occurs. Spider mites are most commonly a problem in water-stressed areas. Natural predators are important for managing mites, so biological controls are primarily recommended. Cultural controls around reducing dust in the orchard and preventing water stress are also important.
- San Jose Scale - tiny crawling insects that are winged as adults, San Jose Scale sucks plant juices while injecting a toxin, which can result in impacts from loss of tree productivity to limb death. These pests have many natural enemies, so biological control is a key strategy for dealing with infestations. Oil sprays (organically acceptable) are also useful treatments. Pheromone traps are commonly used to track populations of these insects.
- Other insects of concern include;
- Oriental Fruit Moth
- Brown mite
- European red mite
- Obliquebanded leafroller
- Peach silver mite
- Peachtree borer
- Tenlined June beetle
- Peach twig borer
- Forest tent caterpillar
- Fruittree leafroller (possible nut drop)
Fungus and Diseases
- Bloom diseases
- Anthracnose
- Brown Rot: Monilinia laxa; Monilinia fructicola
- Green fruit rot (Jacket rot)
- Cankers
- Bacterial canker and blast: Pseudomonas syringae (several pathovars are involved) and closely related species
- Band canker: Botryosphaeria dothidea, Diplodia seriata, Neofusicoccum mediterraneum, Neofusicoccum nonquaesitum, Neofusicoccum parvum
- Ceratocystis canker
- Wood-decaying diseases
- Armillaria mellea
- Crown gall
- Lower limb dieback
- Phytophthora root and crown rot
- Wood-decay fungi: Multiple species in the Basdiomycota including Oxyporus latemarginatus, as well as Ganoderma, Phellinus, Trametes, and Laetiporus species
- Leaf diseases
- Almond leaf scorch
- Alternaria
- Leaf blight
- Rust
- Scab
- Shot hole
- Silver leaf
- Verticillium wilt
- Yellow bud mosaic: tomato ringspot virus
- Hull and fruit infections
- Bacterial Spot
- Fruit russeting (powdery mildew-like)
- Hull rot
- Resources from the Almond Board of California are particularly informative to understanding almond pest and diseases.
- In almond orchards, weeds compete with trees for nutrients, water and light, and can contribute to the growth and spread of insect and disease problems. Different weeds are of particular concern during different seasons, and growers are encouraged to take regular surveys to stay on top of weed populations and ensure effective control method applications.
- Also, due to the shake-and-collect harvest method, a high volume of weeds on the orchard floor can make harvest more expensive and difficult.
- Weed control plans should be established before the orchard is planted, especially to prevent against perennial weed varieties.
- Weed types vary depending on geography and soil type, but some common varieties include; puncturevine, crabgrass, horseweed, and Panicum spp., and perennial weeds such as johnsongrass, nutsedge, and bermudagrass. Perennial weeds such as curly dock, field bindweed, and dallisgrass are also common.
- Managing weeds requires care to ensure it doesn’t lead to soil erosion or compaction, which can also have deleterious impacts on nutrients and water penetration. Repeated use of herbicides with the same mode of action can also lead to herbicide resistance.
- Mechanical (tillage) and chemical (herbicide) control methods are most common for weed management in the tree row, though use of mulches, subsurface irrigation, and flamers are not uncommon.
Vertebrates
- Pocket gophers can damage almond orchards through mound-building activities
- Damage can range from direct damage to fruit (chewing, droppings on fruit) to damage to grove infrastructure (damage to irrigation hoses).
- Ground squirrels and voles are common problem species in California, which feed on plants and roots and can girdle and kill young trees.
- Additional damage can be done by mice, rats, rabbits, coyote, feral hogs, and starlings. Less common vertebrate damage may be caused by bear or beaver.
Consideration for Climate Change
Climate change and weather are having and will continue to have significant impact on almond production both domestically and globally, though the exact nature of these impacts in any specific region are difficult to accurately predict. Almond trees are, in general, relatively drought- and heat-resistant, soil water content and air temperature can have significant impacts on the quality and quantity of annual almond crop. By some predictions, California may not be suitable for almond production by 2100, due largely to shifts in temperatures and irrigation water availability.
- Shifting Temperatures and Growing Regions. Almond trees must be exposed to a certain amount of cold temperatures, or chilling hours, during winter months to properly bloom and fruit. Warmer year round temperatures will likely disrupt chilling patterns, leading to reduced yield and quality, and potentially motivating Northern migration of almond production in the US. Further changes in patterns of heat and precipitation will likely to cause shifts in both growing seasons and growing regions for almonds, due to changing demand for and access to irrigation water. As temperature patterns evolve, growers will need to adjust their management practices, including irrigation schedules and variety selection.
- Pollination Challenges. Because current almond production is highly dependent on pollination by honeybees, the effects of climate change on pollinator health, availability, and behavior are critical to almond growers. Evidence shows that climate impacts can alter foraging patterns, change plant growth patterns, alter emergence times, increase risks related to pesticides, shift pollinator ranges, and in general increase the risks of negative outcomes for pollinator health. As this problem continues to emerge and intensify, growers will face increasing pressure to seek solutions.
- Extreme Weather. From heatwaves to floods to high winds, increasing instances of extreme weather is likely to have a significant impact on almond production. Extreme weather effects orchards in many ways, from damaging trees to disrupting pollination, in general threatening the yield and quality of the crop, and potentially threatening the long-term viability of a given orchard. Though preventing impacts from all extreme weather is impossible, growers will likely be increasingly interested in tools that allow them to mitigate risks related to these events.
- Water Availability. Especially because almonds are a water-intensive crop, as climate change impacts water availability (with some regions experiencing more frequent and severe droughts or changes in precipitation patterns) almond production practices will likely have to evolve. Water scarcity and drought can also impact tree health, particularly if irrigation supplies become limited. Improved water management practices, such as drip irrigation systems and water conservation measures are likely to remain top of mind.
- Pest and Disease. Climate change will likely influence the distribution and abundance of pests and diseases that affect almond trees, especially pests like codling moth, peach twig borer, and oriental fruit moth. Likely changes in temperature and humidity levels will not only lead to more substantial populations of damaging pests and disease, but may also alter the time of year when they emerge or die-off, which can in turn effect the tools available to growers to control them. Growers will need to adapt their pest management strategies and be vigilant for emerging threats.
Additional Resources
- The Almond Almanac
- RPAC: Almond Growers and Processors
- Agricultural Marketing Resource Center: Almonds (2023)
- Global Almond Market Forecasts: 2022 - 2027
- Merlo Farming Group: Almond Commodity Price Reporting
- Guide to California Almonds (Infographic), California Almond Board
- National Nut Grower (Nut Trade Publication)
- Almond Varieties and Selections, 2020, California Almond Board
- Foreign Ag Service (USDA) Global Almond Production Data
- International Nut and Dried Fruit (INC) Publications, Technical Info, etc.
- Almond Board of California Position Reports - Almond Trade Statistics
- Bureau of Labor Statistics: The Rise and Fall of Almond Prices: Asia, Drought, and Consumer Preference by Hayden Swegal