Citrus – AZUD

Citrus

About Citrus Cultivation

Citrus cultivation (oranges, mandarins, lemons, limes, and grapefruits) is currently one of the most important commercial crops worldwide.

Citrus fruits grow in almost every region of the world in tropical and subtropical areas within the band bounded by the 40th parallel north and south. The world’s largest producer of citrus fruits is China, followed by Brazil and the United States.

Citrus fruits are considered among the fresh fruits with the highest nutritional value. This is due to their balanced content of water, sugars, acids, minerals, fiber, and vitamins, with their high vitamin C content being particularly notable. They are consumed fresh as seasonal fruit for consumption, used for juice extraction for direct consumption or as a dressing or condiment, and in the food industry for the production of soft drinks, liqueurs, jams, pectins, jellies, and confectionery products.

Temperature is the most important climatic factor, as it is essential for vegetative growth, flowering, fruit set, and fruit quality. The plant has low cold tolerance; temperatures below -3°C significantly affect the flowers, fruit, and vegetation.

Relative humidity is another important factor in citrus production; fruit set depends on moderate relative humidity, with the optimal range considered to be between 35% and 70%.

With proper selection of rootstocks and cultural practices, citrus fruits can be successfully grown in a wide variety of soil textures, although they prefer deep, light soils with a sandy loam, loam, or clay loam texture, with good drainage and aeration.

Citrus trees thrive in a wide pH range from 4 to 9; however, the optimal pH range is considered to be between 5.5 and 6.

Irrigation systems for small and large citrus plantations

Nutrient uptake by citrus trees is not constant throughout the year. This process reaches its lowest levels during the winter, increases in the spring, and peaks at the end of the spring, coinciding with the fruit-setting period.

During the summer, it remains at high levels and gradually decreases during the fall. The greatest increase in uptake coincides with the period of highest consumption by the plant, which is flowering and fruit set.

The most common micronutrient deficiencies in citrus are boron, zinc, manganese, and copper in alkaline soils; therefore, a good strategy is to maintain the pH between 6.5 and 7.0.

Citrus trees are perennial plants with a large leaf area and, consequently, a high evapotranspiration rate. The water requirements of citrus trees, ranging from 6,000 to 9,000 m³/ha, are influenced by soil and climate factors, the specific requirements of the cultivated species (species and variety-rootstock combination), by other factors derived from the characteristics of the orchard and cultivation practices (planting spacing, pruning), and also by the desired production objective—a balance between quantity, quality, and early harvest.

The characteristics of their root system, along with the plant’s susceptibility to diseases resulting from high soil moisture content—especially near the trunk—make dual-line irrigation with low flow rates per line the best alternative.
Controlled deficit irrigation (CDI) is an alternative irrigation practice used when water availability is limited, aiming to achieve a good crop response through a thorough understanding of agronomic requirements at each stage of the crop cycle.
Sub-surface drip irrigation (SDI) is a cultivation practice with numerous economic and agronomic advantages. In citrus crops, it also offers benefits related to a lower incidence of diseases favored by the presence of moisture near the trunk or in direct contact with the fruit.

Water use efficiency with drip irrigation for citrus crops

Selection of emitter tubing: A wide range of options ensures the selection of the most appropriate emitter tubing. The combination of emitter model, flow rate per emitter, and spacing between emitters not only ensures the delivery of the water rates specified in the irrigation strategy but also guarantees a large volume of moist soil available for root development in both surface drip irrigation and subsurface drip irrigation.

Digital Farming: Along with the proper selection of dripline tubing, the use of AZUD QGROW equipment for the precise management of water and nutrient inputs, using data from soil, plant, and weather sensors, enables:

Good root system development during the early stages of the crop and proper Irrigation practices once the crop begins bearing fruit.
Irrigation management aimed at preventing high soil moisture levels and high EC values, to which citrus fruits are highly sensitive.
Ensure water and nutrient inputs that allow, under existing soil and climate conditions, the achievement of the intended production goal, enabling high yields with the highest quality standards (fruit size and sugar content).
Implement specific irrigation practices independently, tailored to the type of irrigation system: surface drip irrigation or RGS.

Frequently Asked Questions

What innovations and technologies are transforming citrus cultivation?

The latest innovations in citrus farming include advanced drip irrigation systems, crop monitoring using sensors and drones, and precision agriculture techniques to optimize resource use and increase productivity.

How to determine the most suitable Irrigation system for my citrus plantation?

Choosing the most appropriate Irrigation system depends on several factors, including plantation size, soil type, local climate, and available resources. We offer personalized advice and on-site evaluations to help you select and implement the Irrigation system that best suits your specific needs, ensuring that your investment maximizes the benefits for your citrus crop.

How can Irrigation systems benefit both small and large citrus groves?

Our Irrigation systems are designed to be scalable and versatile, allowing growers with any size plantation to maximize water efficiency, improve plant health and increase crop yields, regardless of the size of their operation.

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