Effects of an Ascophyllum nodosum (L.) Le Jol. extract on grapevine yield and berry composition of a Merlot vineyard

Geschiktheid zeewindparken voor maricultuur en passieve visserij : Een kwalitatieve beoordeling van geschiktheid van windparklocaties voor voedselproductie

“…Gebruik: wordt veelal gebruikt voor consumptie (mens en dier) maar heeft ook toepassingen als alginaat en meststof (door een combinatie van macro-en micronutriënten) (Guiry & Morrison, 2013, Hall et al, 2012, Overland et al, 2019, Taskos et al, 2019. Suikerwier komt van nature voor in Europa en een aantal offshorecultivatieprojecten met longlines zijn met succes uitgevoerd in onder andere de Ierse Zee (UK), de Noordzee (Nederland en Duitsland),…”

Phenolic composition of Tempranillo Blanco (Vitis vinifera L.) grapes and wines after biostimulation via a foliar seaweed application

“…Additionally, it was shown that grapevines treated with an A. nodosum fertilizer were less affected by gray mold compared to untreated grapevines. Taskos et al 22 reported that seaweed application to grapevines induced an increase in yield, the number of berries and anthocyanin extractability in berry skins, whereas their application also decreased phenol content in grapes. Similar results were reported by Gutiérrez-Gamboa et al 59 with respect to productive parameters after seaweed application to Carmenère grapevines.…”

“…Different studies suggest that seaweed extracts can behave as novel elicitors, triggering the accumulation of secondary metabolites, mainly phenolic compounds in several plant crops, including grapevines . However, most studies concerning the effects of seaweed application on grapevines focus on its effects on plant physiology, productivity and some secondary metabolism of grapes or musts than on grape and wine quality in terms of phenolic composition . Accordingly, the present study aimed to (i) characterize Tempranillo Blanco grape and wine phenolic composition and (ii) investigate the effect of foliar application of an Ascophyllum nodosum seaweed fertilizer to Tempranillo Blanco grapevines, at two different dosages, on grape and wine phenolic composition during two consecutive seasons (2017–2018).…”

Foliar application of specific yeast derivative enhances anthocyanins accumulation and gene expression in Sangiovese cv (Vitis vinifera L.)

“…In recent studies, it was reported that the biostimulation through the application of a seaweed extract (Ascophyllum nodosum ) in Tempranillo grapevines did not affect neither berry ripening nor colour intensity of the derived wines, but it had strong impact on amino acid content in must 44 . In similar experiments conducted on Merlot, the greatest vine responses were obtained with 1% extract concentration and N supply and involved no changes in berry ripening, but an increase in anthocyanin extractability of berry skins 45 . The application of different elicitors can instead affect the course of berry ripening, contemporarily influencing berry sugar and anthocyanin accumulation, and recently both sugar and anthocyanin concentration increases were detected following the application of a commercial elicitor in Red Globe 46 .…”