Comprehensive technical guide for almond cultivation: profitability, management, and sustainability

Almond cultivation is one of the pillars of fruit production in Mediterranean climates and arid or semi-arid zones. Its adaptation to different conditions, the versatility of its products, and the growing trend in nut consumption support the profitability and interest of this tree in both traditional and intensive agricultural systems, as well as in organic farming. This comprehensive technical guide provides key information, agronomic insights, practical contributions, management options, and recommendations for successful planting. productive y sustainable financing model of almond trees.

Introduction to almond cultivation

El almond (Almond) is a deciduous tree belonging to the Rosaceae family. It is characterized by its resistance to drought, its ability to adapt to poor soils, and its low input requirements compared to other fruit trees. It also produces a fruit with high commercial and nutritional value: the almond, highly valued in the food industry as well as in cosmetics and natural medicine.

The modern expansion of almond cultivation is due to reasons such as high international demand, the growing interest in healthy diets, and the search for profitable agricultural alternatives in marginal areas. Despite its competitive advantages, it is essential to understand and apply the best management and agronomic techniques to maximize the potential of this crop.

Advantages and reasons for growing almond trees

• Increasing profitability: The value of the global almond market has grown exponentially due to food and export demand.
• Productive versatility: It adapts to both dryland and irrigated systems, and allows for organic and conventional production models.
• Resilience and adaptation: It tolerates poor soils, droughts and a wide range of temperatures well.
• Low input requirements: It requires less fertilizers and phytosanitary products than other fruit crops.
• High added value: Almonds and their derivatives are used in multiple industries (food, oils, cosmetics, flours, vegetable drinks, etc.)

The decision to plant almond trees must be accompanied by a correct technical planning, which includes knowledge of the local climate, selection of the appropriate variety, soil analysis, plantation design, and the phytosanitary maintenance and irrigation management plan.

Ideal agroclimatic conditions for almond cultivation

Success in almond cultivation depends on carefully observing environmental conditions and adapting agricultural techniques to the characteristics of the climate and soil.

• Climate: The almond tree thrives in temperate, sunny, and dry climates. It can withstand a wide range of temperatures, but its early flowering period makes it vulnerable to late frosts, which can drastically reduce production. A winter that is not excessively cold (between 2 and 7ºC) is necessary for good floral induction, but without prolonging it too much to avoid damage to the flowers.
• Precipitation and irrigation: Although it can be grown in dry land, controlled irrigation increases yield. An annual rainfall of between 400 and 600 mm, well distributed, is sufficient, but in more arid areas it is recommended to supplement with localized irrigation (drip o micro-spray).
• Solar exposition: Almond trees require direct sunlight for most of the day. A south or southwest orientation is ideal to maximize sunlight hours and promote fruit ripening.
• Floors: It prefers light, well-drained soils with a slightly alkaline pH (pH 7-8,5), although it tolerates neutral soils. It does not tolerate waterlogged or highly saline soils. Heavy clay soils or soils with compact layers that hinder root development are not recommended.
• Altitude: It adapts from sea level to mountainous areas, being ideal between 200 and 800 meters.

In addition to these key factors, it is advisable to conduct prior soil analysis to detect mineral deficiencies, salt content, texture, and structure, and apply the necessary corrections before planting.

Selection and management of almond varieties

One of the most important decisions for the future of the almond orchard is the choice of variety and the most suitable rootstock. There are different types of varieties that adapt to different areas, needs, and production objectives:

• Early flowering: Such as 'Desmayo Largueta', 'Marcona', and 'Garrigues'. Ideal for areas where there is no risk of late frosts.
• Late flowering: Such as 'Guara', 'Ferragnès', 'Ferraduel', 'Soleta', and newer selections. Recommended to prevent damage from late frosts in colder areas.
• Self-fertile varieties: Example: 'Lauranne', 'Soleta', 'Guara', which do not require pollinators, making planting in single varieties easier.
• Traditional varieties: 'Marcona' and 'Largueta' are highly valued in the markets for the quality of their almonds, although they usually require cross-pollination.
• Soft-shell varieties: 'Marta', 'Antoñeta', suitable for mechanized harvesting and high yield.

The rootstock is also essential, offering resistance to calcareous soils, drought, and specific pathogens. The most common are the almond tree, the peach tree, and hybrids like GF-677, each with its advantages and disadvantages depending on the soil and climate conditions.

• GF-677: Wide adaptation, high vigor, defense against nematodes and tolerant of calcareous and dry soils.
• Rootpac R: Vigorous rootstock that offers resistance to nematodes and saline soils.
• INRA hybrids: Alternatives for marginal soils or soils with drainage problems.

In modern plantations, the trend is toward self-fertile, late-flowering varieties on hybrid rootstocks, allowing for denser, more homogeneous plantings and efficient mechanical harvesting.

Land preparation and plantation design

Before undertaking the plantation, it is essential to have a rigorous agronomic planning to optimize the initial development and future productive capacity of the almond orchard.

• Deep tillage: The soil should be subsoiled to break up compact layers (at least 60 cm deep) and improve drainage. It is recommended to incorporate organic matter and, if necessary, amendments to correct pH or nutrients.
• leveling: A flat terrain facilitates irrigation and the mechanization of agricultural work. On slopes, terraces or firebreaks should be provided to prevent erosion.
• Separation and planting frame: The frames vary depending on the variety, rootstock and system (traditional, intensive or super intensive). For traditional systems, the most common spacing is 6x6 m. In intensive systems, this can be reduced to 5x4 or 6x4 m, and in super-intensive systems, even less. Adequate density allows for better use of resources and facilitates access for machinery.
• Distribution of pollinators: If self-incompatible varieties are chosen, it is mandatory to alternate rows or plant in groups to ensure cross-pollination.
• Irrigation installation: Before planting, the necessary hydraulic infrastructure (drip or micro-sprinkler) must be installed, along with emitters, controllers, and fertigation systems, if applicable.

La planting date The most suitable time is usually during the autumn or late winter months, when the plant is dormant and temperatures allow, encouraging rooting before spring budding.

Almond planting technique

The success of almond orchard establishment lies in proper planting. The key steps are:

1. Selection of quality plants: It is essential to purchase certified plants that are virus and disease-free and have a good root system.
2. Hole opening: Of sufficient dimensions to comfortably house the roots (minimum 40x40x40 cm), ensuring a spongy and humid environment.
3. Tutor placement: Especially in windy areas or for intensive plantings, stakes protect and guide the growth of the young tree.
4. Planting and compaction: The roots are placed spread out, ensuring the position of the graft above ground level, and the hole is filled firmly without over-compaction.
5. Seat irrigation: Abundant watering immediately after planting eliminates air pockets and promotes rooting.
6. Initial protection: It is advisable to use protectors to avoid damage from wildlife (rabbits, rodents) and reduce water and heat stress.

Monitoring during the first few months is vital to avoid drying out or frost damage.

Care and cultural work of the almond tree

Despite being a rustic crop, the almond tree appreciates certain agronomic tasks that enhance its vigor, health, and productive capacity.

• Efficient irrigation: La irrigation It must be measured and adapted to the plant's needs according to its phenological phase (budding, flowering, fruit set, and fattening). Controlled deficit irrigation is a widely used technique for optimizing water use without compromising quality or production.
• Fertilizer application: The contributions of nitrogen y potassium are key before flowering and during fruit growth. match It is applied in smaller quantities, and calcium and magnesium must be controlled in deficient soils. fertigation allows adjusting doses and reducing losses.
• Training and fruiting pruning: Initial pruning, during the first 3-4 years, aims to structure the tree into an open canopy (3-4 main branches) or a central axis, depending on the cultivation system. Subsequently, fruiting pruning removes dead, poorly oriented, or crossed branches, improving ventilation and sun exposure inside the tree. Pruning is recommended during dormancy, avoiding periods of high humidity that facilitate fungal infections.
• Weed management: Grass cover control can be achieved through surface tillage, mechanical mowing, the use of plant covers, or mulching. The rational use of herbicides should only be considered within the framework of integrated strategies.

Almond pruning: types and recommendations

La pruning It's one of the most important care methods. The goal is to direct growth, maintain health, facilitate harvesting, and maximize fruit production.

• Formation pruning: During the first few years, this involves selecting and guiding the main branches, removing those that are poorly positioned or underdeveloped. The most common method is the open vase, but in intensive plantations, the central axis can be used to facilitate mechanization.
• Production pruning: It is performed annually on adult trees, removing aged, dry, diseased, or poorly oriented branches, renewing productive wood and allowing light and air to enter the interior.
• Rejuvenation pruning: In very old specimens or those with a marked decline in fruit, a hard cut can be made to encourage the production of new branches and prolong productive life.
• Pruning season: The ideal period is during the dormant period, preferably in late winter to avoid the risk of fungal infections and frost. It's important to disinfect tools and avoid pruning after rain or on humid days.

In modern crops, mechanical pruning is gaining popularity to reduce costs and adapt to super-intensive systems.

Irrigation in almond cultivation

Although the almond tree is known for its ability to withstand dry conditions, the availability of water allows for significant increases in fruit production and quality.

• Support irrigation: It consists of compensating for the lack of rainfall at key moments in the cycle: flowering, setting, fattening, and hardening of the almond.
• Controlled deficit irrigation: An advanced strategy that manages water during the most sensitive phases, limiting water input during less critical periods to maximize efficiency and improve plant resilience.
• Types of irrigation: Drip irrigation is the most recommended option due to its efficiency and low waste. Other alternatives include micro-sprinkler irrigation and furrow irrigation, although the latter is less efficient and only advisable on land with good slopes and drainage capacity.
• Irrigation water quality: Salinity must be controlled, heavy water must be avoided, and the system must be ensured to be free of obstructions.

Rational irrigation management increases production and helps prevent physiological problems such as fruit cracking or premature fruit drop.

Almond fertilization: nutritional keys

The development and productivity of the almond tree depend on the nutritional balance in the soil. fertilization It should be based on soil and leaf analysis, adapting the contributions to the real needs to avoid deficiencies and excesses.

• Macronutrients: Nitrogen promotes vegetative growth and flowering, phosphorus promotes root development, and potassium promotes fruit quality.
• Micronutrients: Boron (which promotes fertilization and fruit set), zinc, and iron are particularly important. Common deficiencies in calcareous soils are corrected with foliar or soil applications.
• Organic fertilizers: They improve soil structure and fertility, especially recommended in ecological and regenerative systems.
• Annual fertilization plan: Nitrogen is generally distributed in three applications: before sprouting, after fruit set, and during fattening. Phosphorus and potassium are administered in a single application at the beginning of the cycle.

Foliar monitoring allows for adjusting dosages and avoiding waste of inputs, aligning fertilization with the tree's needs each year.

Plant health: main pests and diseases

The almond tree, although resilient, can be affected by various pests and diseases, so constant monitoring and the implementation of integrated strategies are essential for long-term success.

• Pests:
• Green aphid (Myzus persicae): Attacks young shoots and leaves, weakening the tree.
• Almond wasp (Eurytoma amygdali): It bores into young fruit and reduces the harvest.
• Borers (Scolytus spp.): Small insects that affect weakened wood.
• Defoliating caterpillar (Hyphantria cunea): Can cause intense defoliation.
• Diseases:
• Fusicoccum (Fusicoccum amygdali): Causes cankers and damage to young branches.
• Monilia (lax Monilinia): Causes flower and fruit rot in humid conditions.
• Screening (Stigmina carpophila): Causes stains and leaf fall.
• Anthracnose (Colletotrichum acutatum): Damage to fruits and twigs, especially in wet springs.
• Integrated management: Pest and disease control should begin with cultural measures: proper pruning, removal of plant debris, weed control, and the use of tolerant varieties. Regular monitoring allows for rapid intervention and minimizes damage. In organic farming, approved products such as mineral oils, potassium soap, and plant extracts are recommended.

Prevention is key: keeping trees vigorous and well-aerated reduces the incidence of phytosanitary problems and limits the need for chemicals.

Pollination in the almond tree

A determining characteristic in the success of the almond tree is the pollinationMany varieties are self-incompatible and require the presence of several compatible varieties and the action of natural pollinators, mainly bees.

• Placing hives: It is recommended to install hives in the plots during the flowering period to ensure maximum fertilization and fruit set.
• Variety selection: In mixed plantings, it is essential to alternate rows or groups of compatible varieties to promote cross-pollination.
• Weather conditions: Low temperatures, rain, and wind can reduce pollination activity, affecting fruit set. Therefore, choosing flowering varieties adapted to the area is essential.
• Self-fertile varieties: They represent an advantage in single-variety systems or in areas with limited pollinator supply, although fruit set usually always improves with the presence of bees.

Almond harvest and post-harvest

The harvesting and post-harvest handling process decisively influences the final quality of the product and the profitability of the crop.

• Determining the optimal time: Harvesting should be done when the casing (epicarp) is fully open and the almond moisture level is low. A delay in harvesting favors fruit drop and exposure to pests.
• Collection methods: On small farms, this can be done manually by beating the branches. In intensive and super-intensive systems, vibrating machinery is used, which reduces costs and speeds up the work.
• Drying the almond: It is essential to dry the fruit quickly after harvesting to prevent mold and quality loss. Drying is done in the sun or in artificial drying rooms until a humidity level of less than 6% is reached.
• Storage: Almonds should be stored in cool, dry, and well-ventilated places, protected from moisture and the presence of pests.
• Handling processes: They include peeling, grading, and cleaning, ensuring a product suitable for commercialization and industrial recovery.

Almond cultivation systems: traditional, intensive, and organic

The choice of exploitation system impacts the profitability and sustainability of the almond orchard.

• Traditional (dry land): Low densities, periodic tillage, and limited input use. Lower production, but lower investment and easier management.
• Intensive (localized irrigation): Denser plantations, higher initial investment, but higher yields. Allows for complete mechanization and precision handling.
• Superintensive: Hedge design, maximum density and total mechanization, suitable for varieties well adapted to mechanical pruning and rapid harvesting.
• Ecological: Based on natural techniques, plant cover, biological control, and organic fertilizers. It provides added value and access to specific markets.

The model should be chosen according to the climate, soil, available investment, and the farmer's experience.

Profitability and prospects for almond cultivation

The almond market It offers attractive prices and growth prospects, although it faces international competition (United States, Australia, Mediterranean countries). Factors such as quality, differentiation (organic almonds, local varieties), and production efficiency make the difference.

• The almond tree can begin to produce fruit in the third year, but full production is reached from the seventh year onwards.
• The farms of localized irrigation and technical management present higher returns and margins, although they require more investment and professional management.
• In dry land, cultivation can be complementary to other activities or part of reforestation and agricultural diversification projects.
• The study of costs, gross margins, risk management, and access to public aid is essential for the viability of the project.

Innovation trends and the future of the almond tree

Research and development are driving technical improvements in:

• Agricultural mechanics: Advances in planting, pruning, and harvesting machinery that reduce costs and labor times.
• Genetic improvement: New self-fertile varieties, resistant to diseases and adapted to mechanized harvesting.
• Sustainability: Advances in regenerative agriculture, green manure, smart irrigation systems, moisture sensors, and integrated plant health management.
• Digitization: Remote monitoring platforms, inspection drones, and tools to support agronomic decision-making.

Adopting these trends ensures competitiveness and environmental respect, as well as access to quality certifications and premium market niches.

Frequently asked questions about almond cultivation

• When to plant almond trees? The best time to plant is during the dormant period (late autumn or late winter), avoiding periods of frost or excessively wet soils.
• How often should they be watered? It depends on the climate, soil texture, and phenological phase; in general, almond trees require water during flowering, fruit set, and fruit fattening. In dry land, they are irrigated only if strictly necessary.
• Does it require a lot of pruning? Yes, especially in the first few years to guide the tree and then to renew the productive wood and allow light to enter.
• Which varieties yield the most? Self-fertile and late-flowering varieties such as 'Guara', 'Soleta', 'Lauranne' and 'Vairo' are generally planted on resistant rootstocks and in intensive settings.
• What are the main health problems? Pests such as wasps and aphids; diseases such as monilia, sieve, and fusicoccum. Integrated management, varietal selection, and ongoing monitoring are the best prevention.
• Is the almond tree compatible with organic farming? Perfectly suited to its hardiness and low need for chemical inputs. It allows for the use of organic fertilizers and biological control strategies.