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Article

Effect of Different Watering Regimes on Olive Oil Quality and Composition of Coratina Cultivar Olives Grown on Karst Soil in Croatia

1
Department of Agriculture and Nutrition, Institute of Agriculture and Tourism, Karla Huguesa 8, HR-52440 Poreč, Croatia
2
Department of Ecology, Agronomy and Aquaculture, University of Zadar, Square of Prince Višeslav 9, HR-23000 Zadar, Croatia
3
Department of Applied Sciences, Institute for Adriatic Crops and Karst Reclamation, Via Duilova 11, HR-21000 Split, Croatia
4
Centre of Excellence for Biodiversity and Molecular Plant Breeding (CoE CroP-BioDiv), Svetošimunska Cesta 25, HR-10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Academic Editor: Araceli Sanchez-Ortiz
Foods 2022, 11(12), 1767; https://doi.org/10.3390/foods11121767
Received: 18 May 2022 / Revised: 10 June 2022 / Accepted: 13 June 2022 / Published: 15 June 2022
Croatian islands are olive growing areas characterized by poor conditions for olive trees because of karst soil and a precipitation deficiency. Under these conditions, irrigation is a very important factor for constant olive oil production. This paper aims to investigate the effects of different watering regimes on quantity, sensory and chemical quality and composition of Coratina cv. olive oil obtained from trees grown on ameliorate karst soil during two harvesting years. Olive trees were subjected to rainfed conditions and three different irrigation treatments (T1—deficit irrigation representing the usual producer’s practice, T2—regulated deficit irrigation in respect to phenological stages, T3—full irrigation). Irrigation treatments increased oil yield compared to rainfed conditions (T1 + 58%, T2 + 66% and T3 + 74%, representing average values for both studied years). All olive oil samples were of extra quality. Irrigation led to a decrease in carotenoids, volatiles, polyunsaturated fatty acids and linolenic acid contents, with no difference found among irrigation treatments. Total phenols and secoiridoids concentration was not affected by irrigation, indicating that similar oil quality could be achieved with less demand on the water supply. Obtained results could help producers to define a suitable irrigation management in particular conditions of ameliorate karst. View Full-Text
Keywords: watering regimes; Olea europea L.; olive oil; quality; volatile compounds; phenolic compounds; fatty acids; sensorial characteristics watering regimes; Olea europea L.; olive oil; quality; volatile compounds; phenolic compounds; fatty acids; sensorial characteristics
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MDPI and ACS Style

Brkić Bubola, K.; Kolega, Š.; Marcelić, Š.; Šikić, Z.; Gašparović Pinto, A.; Zorica, M.; Klisović, D.; Novoselić, A.; Jukić Špika, M.; Kos, T. Effect of Different Watering Regimes on Olive Oil Quality and Composition of Coratina Cultivar Olives Grown on Karst Soil in Croatia. Foods 2022, 11, 1767. https://doi.org/10.3390/foods11121767

AMA Style

Brkić Bubola K, Kolega Š, Marcelić Š, Šikić Z, Gašparović Pinto A, Zorica M, Klisović D, Novoselić A, Jukić Špika M, Kos T. Effect of Different Watering Regimes on Olive Oil Quality and Composition of Coratina Cultivar Olives Grown on Karst Soil in Croatia. Foods. 2022; 11(12):1767. https://doi.org/10.3390/foods11121767

Chicago/Turabian Style

Brkić Bubola, Karolina, Šimun Kolega, Šime Marcelić, Zoran Šikić, Ana Gašparović Pinto, Marko Zorica, Dora Klisović, Anja Novoselić, Maja Jukić Špika, and Tomislav Kos. 2022. "Effect of Different Watering Regimes on Olive Oil Quality and Composition of Coratina Cultivar Olives Grown on Karst Soil in Croatia" Foods 11, no. 12: 1767. https://doi.org/10.3390/foods11121767

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