The Use of Biostimulants in High-density Olive Growing: Quality and Production

Main Article Content

Gilberto Hernández-Hernandez
Domingo M. Salazar
Juan Martínez-Tomé
Isabel López-Cortés

Abstract

Due to the increase of high-density holdings, especially of olive trees, the nutritional requirements of the plants are higher per unit area, which implies that a greater contribution of fertilizers to the soil is needed. Opting for fertilizers of inorganic origin will produce an increase in the pollution of the soil.

In the face of this possible soil contamination, our aim is to analyze the effect of biostimulants as an alternative to chemical fertilizers, to steadily produce and maintain high quality standards during the life of the crop. Our objective is using more environmentally friendly products in order to satisfy one of the most important demands from both consumers and the authorities.

In this study, we carried out five different treatments in addition to a control treatment with a supply of NPK, from inorganic products, which are used to control fertilization with a solution obtained from seaweed extracts. These treatments were applied in two crop cycles for two of the most important varieties in the current olive tree growing scenario: Arbequina and Koroneiki.

This study was developed in the farm Pozohondo, which is located in a crop zone by the Palancia river (Castellón, Valencia, Spain), in the southeast of the Iberian Peninsula, where the olive trees were established in a high-density system with a planting framework of 4 x 1.5 m. We ensured an exhaustive control of the nutritional needs of the holding by using a fertigation system.

We could notice differences in the productions of each applied treatment, avoiding any possible biases through the additional control of 100 randomly selected olives from each of the samples. There is an improvement in the set of physical characteristics of the olives with the treatment that provides amino acids and extra potassium based on amni acids. We analyzed the quality of the olive oil obtained from the production of each treatment by measuring the fatty acids, tocopherols and polyphenols contents. We also carried out an organoleptic tasting analysis following the rules of the International Olive Committee (IOC).

We observed an improvement with regard to the rest of treatments in the pomological parameters of the olives when applying the potassium and amino acid biostimulant, while the quality of the oils was not affected by the type of fertilization applied in each treatment.

Keywords:
Biostimulant, NPK, olive growing, chemical fertilizers

Article Details

How to Cite
Hernández-Hernandez, G., Salazar, D., Martínez-Tomé, J., & López-Cortés, I. (2019). The Use of Biostimulants in High-density Olive Growing: Quality and Production. Asian Journal of Advances in Agricultural Research, 10(4), 1-11. https://doi.org/10.9734/ajaar/2019/v10i430034
Section
Original Research Article

References

López-Cortés I, Salazar-García DC, Velázquez-Martí B, Salazar DM. Chemical characterization of traditional varietal olive oils in East of Spain. Food Research International. 2013;54:1934-1940.

Tekaya M, Mechri B, Bchir A, Cheheb H, Attia F, Chraief I. Ayachi M, Boujneh D, Hammami M. Changes in the profiles of mineral elements, phenols, tocopherols and soluble carbohydrates of olive fruit following foliar nutrient fertilization. LWT-Food Science and Technology. 2014;59: 1047-1053.

Attalla AM, Abdel-Sattar M, Mahrous AE, Abdel-Azeez AA. Olive trees productivity in response to supplemental irrigation under North-Western Coastal Conditions in Egypt. American-Eurasian J. Agric. & Envir. Sci. 2011;11(5):609-615.

Rosati A, Cafiero C, Paoletti A, Alfei B, Caporali S, Casciani L. Effect of agronomical practices on carpology, fruit and oil composition, and oil sensory properties in olive (Olea europea L.). Food Chemistry. 2014;159:236-243.

Neilsen D, Millard P, Neilsen GH, Hogue EJ. Sources of N for leaf growth in a high-density appel (Malus domestica) orchard irrigated with ammonium nitrate solution. Tree Physiology. 1997;17(11):733-739.

Ramos TB, Darouich H, Simunek J, Gonçalves MC, Martins JC. Soil salinization in very high-density olive orchards grown in southern Portugal: Current risks and posible trends. Agricultural Water Management. 2019;217:265-281.

EBIC. Definition of Biostimulants by European Bioestimulant Industry Council.
(Accessed 25 April 2019)
Available: www.biostimulants.eu.

Chen S, Subler S, Edwards CA. Effects of agricultural biostimulants on soil microbial activity and nitrogen dynamics. Applied Soil Ecology. 2002;19:249-259.

Khan W, Rayirath UP, Subramanian S, Jithesh MN, Rayorath P, Hodges DM, Critchley AT, Craigie JS, Norrie J, Prithiviraj B. Seaweed extracts as Biostimulants of plant growth and development. J. Plant Growth Regul. 2009;28:386-399.

Battacharyya D, Babgohari MZ, Rathor P, Prithiviraj B. Seaweed extracts as biostimulants in horticulture. Sci. Hortic. 2015;19639–48.

Nabti E, Jha B, Hartmann A. Impact of seaweeds on agricultural crop production as biofertilizer. Int. J. Environ. Sci. Technol. 2017;14:1119-1134.

Farid R, Mutale-joan C, Redouane B, Najib EM, Abderahime A, Laila S, Hicham EA. Effect of microalgae polysaccharides on biochemical and metabolomics pathways related to plant defense in Solanum lycopersicum. Applied biochemistry and biotechnology. 2019;188:225-240.

Calvo P, Nelson L, Kloepper JW. Agricultural uses of plant biostimulants. Plant Soil. 2014;383: 3-41.

Saa S, Olivos-Del Rio A, Castro S, Brown PH. Foliar application of microbial and plant based biostimulants increases growth and potassium uptake in almond (Prunus dulcis [Mill.] D. A. Webb). Frontiers in Plant Science. 2015;(6):87.

Baldi E, Marcolini G, Quartieri M, Sorrenti G, Toselli M. Effects of organic fertilization on nutrient concentration and accumulation in nectarine (Prunus pérsica var. Nucipersica) tres: The effect of rate of application. Scientia Horticulturae. 2014;179:174-179.

Tanou G, Ziogas V, Molassiotis A. Foliar nutrition, biostimulants and prime-like dynamics in fruit tree physiology: New insights on an old topic. Frontiers in Plant Science. 2017; 8:75.

Tekaya M, Mechri B, Bchir A, Attia F, Cheheb H, Daassa M, Hammami M. Effect of nutrient-based fertilisers of olive trees on olive oil quality. Journal of Sci. Food Agric. 2013;93: 2045-2052.

Bourne D, Prescott J. A comparison of the nutritional value, sensory qualities and food safety of organically and conventionally produced foods. Critical Reviews in Food Science and Nutrition. 2002;42:1-34.

Byrne P, Toensmeyer U, German C, Reed Muller H. Analysis of consumer attitudes toward organic produce and purchase likelihood. Journal of Food Distribution Research. 1991;6 (91):49‐62.

Vidal AM, Alcalá S, de Torres A, Moya M, Espínola F. Characterization of olive oils from superintensive crops with different ripening degree, irrigation management, and cultivar: (Arbequina, Koroneiki and Arbosana). European Journal of Lipid Science and Technology. 2019;121:1800360.

Fregapane G, Salvador MD. Chemical and sensory characteristivcs of extra virgin olive oils produced in central Iberian Peninsula under the protected designation of origin quality scheme. European Journal of Lipid Science and Technology. 2019;121:1800134.

Ibrahimi K, Gaddas F. Organic fertilization of olive tree based on soil analysis and foliar diagnosis: A case study of an olive orchard in the Northwest of Tunisia. Journal of Fundamental and Applied Sciences. 2015;7(3):322-339.

COI. Método de valoración organoléptica del aceite de oliva virgen extra que opta a una denominación de origen. COI/T.20/Doc nº; 2015.

Laila FH, Shahin MF, Merwad MA, Khalil FH, El-Hady ES. Improving fruit quality and quantity of “Aggizi” olive trees by application of humic acid during full Bloom and fruit set stages. Middle East j. 2013;2(2):44-50.

Chouliaras V, Tasioula M, Chatzissavvidis C, Therios I, Tsabolatidou E. 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 europea L.) cultivar Koroneiki. Journal of Sci. Food Agric. 2009;89:984-988.

Tekaya M, Mechri B, Cheheb H, Attia F, Chraief I, Ayachi M, Boujneh D, Hammami M. Changes in the profiles of mineral elements, phenols, tocopherols and soluble carbohydrates of olive fruit following foliar nutrient fertilization. LWT – Food Science and Techenology. 2014;59:1047-1053.