The effects of a seaweed extract in addition to nitrogen and boron fertilization on productivity, fruit maturation, leaf nutritional status and oil quality of the olive (Olea europaea L.) cultivar…

By V. Chouliaras, Maria Tasioula, Christos Chatzissavvidis, I. Therios, Eleftheria Tsabolatidou. 2009

149 citations recorded by the source corpus.

BACKGROUND: There is not adequate literature on effects of seaweed extracts (SWE) on yield and nutritional status of olive trees as well as olive oil quality. In this work, a study of the effects of a seaweed extract applied foliarly (0.5% v/v) in addition to soil application of N (500 g NH4NO3 per tree) and B (150 g borax per tree) on productivity, fruit parameters, nutritional status and olive oil quality of a Greek olive cultivar was performed. RESULTS: In contrast to the trees treated with N (NH4NO3) or N + B (NH4NO3 + borax), the additional application of seaweed extract (treatments N + SWE and N + B orax + SWE) increased the productivity and oil content and accelerated maturation of the olive fruits. In particular, the best results concerning productivity, oil content and earliness of maturity (colour and firmness) were observed in the trees treated with N + B + SWE. The additional application of SWE also increased K, Fe and Cu concentrations and reduced the concentrations of Mn in olive leaves compared to the corresponding treatments without SWE. Total phenol concentration in oil was minimized in all fertilization treatments but, particularly, the additional application of SWE did not affect it. The application of N + B + SWE led to a significant increase in linolenic as well as oleic acid concentrations, and to a decline in palmitoleic, stearic and linoleic acid concentrations in olive oil. CONCLUSION: The fertilizer treatments of this experiment and especially the combination of NH4NO3 + borax + SWE should be recommended for the studied olive orchards, in order to increase tree productivity and improve their nutrition status and various olive oil quality parameters. Copyright © 2009 Society of Chemical Industry

Subfields: Organic Chemistry, Plant Science

View Paper: https://www.semanticscholar.org/paper/9c51d2693eb9f40f196570b2b8ea616ff562e640

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In Plant Science

1. A. Critchley
2. J. Rao
3. T. Martin
4. H. Sharma
5. C. Fleming
6. C. Selby
7. Balakrishnan Prithiviraj
8. J. Craigie

Citations in the corpus

• A concise review of the brown macroalga Ascophyllum nodosum (Linnaeus) Le Jolis (2020, background): “nodosum improved agricultural productivity by regulating the nutrient use efficiency of some plants (Chouliaras et al. 2009; Jannin et al. 2013; Stasio et al. 2018; Shukla et al. 2019).”
• Agricultural uses of plant biostimulants (2014, unknown): “2008), olive (Olea europaea) (Chouliaras et al. 2009), broccoli (Mattner et al.”
• Seaweed extract stimuli in plant science and agriculture (2011, background): “nodosum extract fortified with added nitrogen and boron (Chouliaras et al. 2009).”
• Plant biostimulants: a review on the processing of macroalgae and use of extracts for crop management to reduce abiotic and biotic stresses (2013, background): “…yield and quality ** Basak 2008 (also tested Kelpak) Exp A. nodosum Olive Foliar before full bloom, increased yield and improved oil quality ** Chouliaras et al. (2009) Kelpak E. maxima Tomato Soil and foliar treatments increased root growth, improved fruit yield and reduced root-knot…”
• A Commercial Extract of Brown Macroalga (Ascophyllum nodosum) Affects Yield and the Nutritional Quality of Spinach In Vitro (2013, background): “The application of ANE has been shown to improve yield and/or size in many fruits and vegetables including apple, grape, pepper, carrot, and potato (Norrie and Hiltz 1999), lettuce and cauliflower (Abetz and Young 1983), and olives (Chouliaras et al. 2009).”