Olive oil quality influenced by biostimulant foliar fertilizers

Zouari, Imen; Mechri, Beligh; Tekaya, Meriem; Dabbaghi, Olfa; Cheraief, Imed; Mguidiche, Amel; Annabi, K.; Laabidi, Foued; Attia, Faouzi; Hammami, Mohamed; Mezghani, Mouna Aïachi

doi:10.21472/bjbs(2020)071501

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…Similarly, Frioni et al [58] showed beneficial effects of the seaweed extract foliar applications on fruit quality for several red grapevine cultivars over various climatic conditions (from cold to warm viticultural regions). Whereas in other studies, the authors observed different behaviours of the crops treated with biostimulant due to different climatic conditions [51,64]. In particular, Gutiérrez-Gamboa et al [64] observed that in grapevine, the seaweed applications had a differential effect on must amino acids content, which depended on the climate conditions of the season.…”

Section: Discussionmentioning

confidence: 94%

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Vegetable Extracts for Adaptive Agriculture: A Preliminary Assessment in Italy

Leogrande¹,

Chami²,

Piegari³

et al. 2022

Preprint

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To meet the United Nations sustainable development goals (UN-SDGs) and the European Green Deal, plant biostimulants have become a necessity in agriculture. In particular, seaweed-based biostimulants have received a greater acceptance for their several benefits in crop growth and yield. This study evaluates the effects foliar applications based on vegetables and brown algae extract (Ascophyllum nodosum (L.) Le Jol., on grapes and olive yield in two field experiments in the Apulia region known for its modern agricultural sector. In particular, grape-growing and olive production. At harvest, the yield performances were determined. The results highlighted that the crop responses differed in grape and olive orchards. The biostimulant application determined significant increases in bunch development (+ 9.5%) and bunch weight (+10%) compared to untreated control. In the olive orchard, the yield was not significantly influenced by biostimulant application, whereas we observed quality improvement in olive oil in treated plants compared with the control. To better understand the mechanisms behind this difference, the research concludes by suggesting pursuing in-depth studies and high scientific and technical proficiency to determine and optimise the rates and timing of applications.

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Section: Discussionmentioning

confidence: 94%

“…Several studies reported the positive effects of biostimulant application on olive yield and oil quality [33,[50][51][52]. In particular, Zouari et al [51] observed that the foliar application of biostimulant could increase the oil polyphenol content during two consecutive growing seasons.…”

Section: First Experimentsmentioning

confidence: 99%

Vegetable Extracts for Adaptive Agriculture: A Preliminary Assessment in Italy

Leogrande¹,

Chami²,

Piegari³

et al. 2022

Preprint

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“…The treatment of olive trees, cv 'Chemlali', with two biostimulants, Alcygol (seaweed with boron) and Nectar intense (based on proteins), changed the olive oil quality profile [139]. For the Alcygol biostimulant, an increase of carotenoids and a reduction of peroxide value and total phenols was observed, while with the use of Nectar intense, the monounsaturated fatty acids (MUFAs) and carotenoids increased but the polyunsaturated fatty acids (PUFAs) decreased.…”

Section: Biostimulant Effect On Olive Fruits Oil Yield and Qualitymentioning

confidence: 99%

Sustainable Olive Culture under Climate Change: The Potential of Biostimulants

et al. 2022

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Climatic extreme events, like droughts, heatwaves, and floods are becoming recurrent and represent a threat to agriculture, lowering plant growth and productivity. The Mediterranean region is a climate-change hotspot, where traditional agricultural systems, like olive groves, are particularly challenged. Both the traditional and intensive systems of olive culture coexist in the Mediterranean. Both systems differ in their demands for water and agrochemicals, but nowadays, the global inputs of agrochemicals and irrigation have increased to achieve high productivity and profitability. Finding sustainable alternatives to maintain high productivity under the ongoing climate change is urgent to meet the EU-Farm to Fork strategy and climate neutrality. Candidate eco-friendly alternatives include biostimulants. These are substances or microorganisms, that activate signaling cascades and metabolic processes, increasing plant yield, quality, and tolerance to stressors. These benefits include a better growth, nutritional status and water availability, leading to a decreased demand for irrigation and agrochemicals. In this review, we aim to present different types of biostimulants (e.g., seaweed, protein hydrolysates, humic substances, microorganisms and nanomaterials), their mode of action and benefits in agriculture. We also explore the current state-of-the-art regarding the use of biostimulants in olive culture, and their potential benefits to increase tolerance to (a)biotic challenges.

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“…In the previous few decades as olive production increased as it is a source of essential fatty acids and antioxidants in diet of human being (Cicerale et al, 2012;Preedy and Watson, 2020). The presence of functional bioactive compounds, fatty acids and antioxidants gave an importance to olive oil hence it considered as a famous diet of Mediterranean areas people (Souilem et al, 2017;Zouari et al, 2020).…”

Section: Importance Of Olive Oilmentioning

confidence: 99%

Nutritional Requirement of Olive (Olea europaea L.) in Pothwar Region of Pakistan: A Review

Jan¹,

Sumrah²,

Akhtar³

et al. 2021

SJA

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Europe, Africa has 19.7%contribution and Asia is 13.4% olive production share (Erel et al., 2017). Turkey, Italy, Spain, and Greece are the considered as main oil producing countries (Haberman et al., 2019). Olive can play its essential role in our country's economy. Pakistan's aggregate household edible oil use is around 2.9 million tons. Approximately, 67% of this consumption met by imports. Annually 38 billion rupees were for this purpose. Thus, giving careful consideration to increase the olive cultivation in Pakistan can help saving foreign reserve. In Abstract | Olive (Olea europaea L.) fertilization considered as one of the important factor for production of olive fruit and oil. Keeping in view the modern fruit production physiology, nutrients serve as stimulants for cell development and fruit production. In Pakistan, Olive cultivation and production started from a previous one decade. Farmers have a lack of trend for fertilizer application to Olive orchards in a proper dose. Olive intensification for new orchard enhanced fertilizer use especially Nitrogen (N), Phosphorus (P) and Potassium (K) and in micronutrients especially Boron (B) to control alternate bearing of olive. In Pakistan, olive plantation is an initiative to minimize the Olive import, and to maximize olive plantation in Pothwar area as well as control climate change. There is no trend for fertilizer application among the Pakistani farmers. The increasing demand of olive oil and value added products like pickles jams and squash enforcing the farmer to produce more and more. The increasing demand creates the competition among the farmers. To produce more it is important to apply fertilizer at a right time, right source and right method. In case of soil application, apply first dose of nitrogen, all phosphorus and all potassium fertilizers during the December. Apply second dose during May-June and third dose during September in Pothwar. Foliar application is suitable during end February and March. Drip irrigation is suitable during December and May.

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Olive oil quality influenced by biostimulant foliar fertilizers

Cited by 11 publications

References 29 publications

Vegetable Extracts for Adaptive Agriculture: A Preliminary Assessment in Italy

Vegetable Extracts for Adaptive Agriculture: A Preliminary Assessment in Italy

Sustainable Olive Culture under Climate Change: The Potential of Biostimulants

Nutritional Requirement of Olive (Olea europaea L.) in Pothwar Region of Pakistan: A Review

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