Effect of Methyl Jasmonate and Methyl Jasmonate Plus Urea Foliar Applications on Wine Phenolic, Aromatic and Nitrogen Composition

Foliar application has been studied to enhance grape composition and, therefore, wine quality. This work examined, for first time, the effects of foliar applications methyl jasmonate (MeJ) and plus urea (MeJ+Ur) Tempranillo vineyard on phenolic, aromatic nitrogen over two vintages (2019 2020). A reduction in alcoholic degree was observed MeJ MeJ+Ur wines. The effect treatments season-dependent. wines were characterized, vintage, by a higher content total acylated anthocyanins, but low esters, alcohols acids when compared with control presented amino than However, second an increase some non-acylated only treatment increased flavonols, flavanols, hydroxycinnamic acids, stilbenes esters whereas did not show differences Overall, greater order improve chemical composition.