- Titre : Réponse végétative, florifère et productive de l’olivier et variation de la composition phénolique de l’huile d’olive suite à l’utilisation de fertilisants foliaires biostimulants et cytotoxique
- DOI: 10.71751/JAAOGv1i1y2022-24-41
- Auteur :Imen ZOUARI; Beligh MECHRI; Faouzi ATTIA; Amel MGUIDICHE; Mohamed HAMMAMI; Mouna MEZGHANI AIACHI
- Abstract : Foliar fertilization is practiced to supplement the needs of the olive tree in order to improve yields while respecting the environment. The appearace of new inputs such as biostimulants helps stimulate natural processes in order to improve nutrient uptake and efficiency, tolerance to abiotic stress and crop quality. This research aimed to test different fertilizers and biostimulants, applied at different periods of the biological cycle of the olive tree. Two fertilizers, F1 rich in nitrogen and F2 rich in boron applied before flowering and a biostimulant F3 rich in calcium, applied during fruit growth were tested and applied during two successive years in a row on rain-fed olive trees of the Chemlali variety. The effects of these applications on the vegetative growth and flowering potential of the olive tree during two years of foliar treatments were studied. After two years of fertilization, the cumulative production was calculated and the olive oil was extracted to determine the content of total polyphenols as well as the phenolic compounds profile. One year after foliar fertilization, the treatment F1 rich in nitrogen improved the vegetative growth in length and thickness. After two years of fertilization, all treatments improved the vegetative growth. Flowering density was improved following the application of the treatment rich in nitrogen. Calcium-based treatment F3 showed the highest cumulative production. The most abundant phenolic compound is oleuropein aglycone. The treatment F3 rich in calcium-increased the content of the majority of phenolic compounds. This work has shown that foliar treatments can improve the vegetative and productive potential of the olive tree and optimize the quality of olive oil, particularly for the treatment F3 rich in calcium.
- Pagination : 24-41
