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Influence of Regulated Deficit Irrigation on Arbequina’s Crop Yield and EVOOs Quality and Sensory Profile

Regulated deficit irrigation in super-high-density (SHD) olive orchards is a well-known strategy to save water and control plant vigor, without decreasing fruit or oil yield. As there is controversial information about its influence on virgin olive oil quality, a trial was conducted in five SHD oliv...

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Main Authors: Sastre, Blanca, Arbonés, Amadeu, Pérez-Jiménez, María Á., Pascual, Miquel, Benito, Alejandro, Lorenzo, Cristina, Villar Mir, Josep M., Bonet, Luis, Paz, Sergio, Santos, Ángel, Hermoso, Juan Francisco, Romero, Agustí, Farolfi, Camilla, Rufat, Josep
Format: article
Language:Inglés
Published: MDPI 2023
Subjects:
Olive grove
Phenol profile
Climatic conditions
Extra virgin olive oil
Arbequina
Deficit irrigation
Q04 Food composition
F06 Irrigation
S01 Human nutrition - General aspects
Fatty acids
Sterols
Olea europaea
Quality
Sensory evaluation
Online Access:https://hdl.handle.net/20.500.11939/8574
https://www.mdpi.com/2073-4395/13/1/31
Summary:Regulated deficit irrigation in super-high-density (SHD) olive orchards is a well-known strategy to save water and control plant vigor, without decreasing fruit or oil yield. As there is controversial information about its influence on virgin olive oil quality, a trial was conducted in five SHD olive orchards of Arbequina cultivar in different locations of central, east, north and northeast Spain under full irrigation (FI) and regulated deficit irrigation (RDI) treatments. RDI applied during phase II of fruit growing (40% of total needs) saves more than 20% of water on average, without reductions in olive fruit or extra virgin olive oil (EVOO) yield. No threshold of 3.5 MPa of stem water potential was crossed in any case. RDI modified sterols and the fatty acid profile of EVOOs but not phenols, quality parameters, or the sensory profile. Latitude, altitude, and yearly rainfall have a big impact on some compounds such as campesterol, oleuropein, or margaroleic or linolenic acids.

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