High-Density Pistachio Orchards in Castile-La Mancha (Spain): Tree Training in the Early Years

Within a pedoclimatic context typical of Castile-La Mancha, an area particularly well suited to pistachio cultivation, a plantation in its first year of vegetative activity has been observed, established with a spacing of 6 × 3 m (approximately 550 trees per hectare). The adopted approach reflects the principles of the ZaragoZa® system, adapted to the physiology of pistachio and to the objectives of modern, mechanized management.

Tree training begins with a key structural element: a trunk completely free of branches up to approximately 80–90 cm above ground level. This technical choice allows for improved light management, enhances canopy aeration, and, above all, prepares the tree for efficient continuous mechanical harvesting in the future.

Above this height, the first primary branches develop, forming the foundation of the productive structure. The goal is not to impose a rigid shape, but rather to guide the tree toward a multi-branched, stable, and balanced configuration. In this context, horizontal topping and vertical edging play a strategic role: by intercepting the vegetative apex, they stimulate the emission of new lateral shoots. Repeating this process over one or two vegetative cycles results in a progressively denser and more evenly distributed canopy.

The management of vigorous shoots, often referred to as “bull” shoots, is another critical aspect. These shoots, characterized by strong apical dominance, can be controlled through light pruning or allowed to develop until natural bending and self-regulation occur. In both cases, the objective is to promote a physiological curvature that encourages the formation of lateral fruiting branches, transforming excessive vegetative growth into a productive advantage.

Video

The expected outcome is a bush-like tree structure, low in height, well-branched, and capable of intercepting light uniformly. This model enables earlier entry into production and simplifies long-term management.

From an operational perspective, the adopted system is already oriented toward harvesting. The tree structure is suitable both for the use of shaker machines with interception systems and for simpler solutions involving ground nets and assisted harvesting with vibrating arms. The choice will depend on farm size and the level of mechanization.

Video

In summary, the first year represents a decisive phase: it is not a matter of waiting for the tree to grow, but of guiding its development with precision. Proper initial training allows for the establishment of an efficient, sustainable, and truly productive orchard over the medium to long term.

Editorial Note:
Original content by Agronomist Vito Vitelli, developed and optimized with the support of artificial intelligence tools for educational, informational, and technical dissemination purposes.

Outreach activity carried out in collaboration with:

Commenti

Top 3 - ultimo mese

Oliveti più semplici, più produttivi: la rivoluzione del vaso libero Zaragoza

Dal vaso “Policonico” al vaso libero “Zaragoza”: trasformare gli oliveti tradizionali per una olivicoltura moderna

Nuovo impianto di mandorlo in Salento: avvio del sistema Zaragoza