Transformation of a Traditional Olive Grove into the Free-Vase ZaragoZa® System: The Case of Decimomannu (Sardinia)

We are in Decimomannu, in the province of Cagliari, within a traditional olive grove undergoing a radical and practical transformation based on the free-vase ZaragoZa® system, promoted by agronomist Dr. Vito Vitelli. This intervention arises from the need to overcome the structural limitations of historical low-density plantations, typically characterized by excessive woody biomass and limited productive efficiency.

The original planting layout consisted of a 6 × 5 meter spacing, a variation of the classic 6 × 6, with fewer than 300 trees per hectare. Under these conditions, light interception is suboptimal, and a significant portion of the plant’s energy is diverted toward maintaining unproductive wood. Hence the decision to implement a decisive, uncompromising intervention.

The first step involved the reform pruning of mature trees. Cuts were made at a height of approximately 100–110 cm from the collar, at a 45° angle, following the main vertical axes of the plant. This drastic intervention effectively resets past structural issues and stimulates the development of a new architecture, based on multiple ascending leaders and a free, bush-like structure that is both balanced and productive.

At the same time, the grove was densified. Between the existing trees, spaced 6 meters apart along the row, new young plants were introduced, reducing spacing to approximately 6 × 2.5–3 meters. This step is crucial, as it transforms the olive grove into a continuous productive hedge, increasing density to around 550 trees per hectare.

Video

The agronomic principle underlying this transformation is clear: reduce woody biomass while increasing the active leaf surface per hectare. More leaf area translates into greater photosynthetic capacity, improved light interception, and consequently higher yields. This directly enhances farm profitability, creating a virtuous cycle between canopy management and economic performance.

In addition to pruning and densification, the intervention is completed through optimization of the irrigation system and soil management, both essential to support the new vegetative and productive balance. Only through an integrated approach can stable and long-term results be achieved.

Video

This example demonstrates that even a traditional olive grove can be converted into a modern and efficient system without resorting to theoretical or overly complex solutions. What is required are precise technical choices, the ability to identify structural weaknesses, and the determination to act decisively.

The message is simple and direct: less theory, more fieldwork. When the entrepreneur acts with vision and pragmatism, results can be achieved even starting from less favorable initial conditions.

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


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