Counteracting the Negative Effects of Copper Limitations Through the Biostimulatory Action of a Tropical Plant Extract in Grapevine Under Pedo-Climatic Constraints

In southern Mediterranean areas, vineyards are facing the combination of increasing air temperature, drought and frequency extreme events (e.g., heat waves) due to climate change. Since most berry growth ripening phases occur during aridity period, such environmental constraints responsible for limitations in yield quality. Within this scenario, achieve vineyard sustainability, renewed approaches management have been proposed use plant biostimulants seems a prominent friendly practice. The aim study was test four combinations tropical extract conventional chemicals disease control on morpho-anatomical, physiological, biochemical quality Vitis vinifera L. subsp. “Aglianico.” particular, we aimed evaluate possibility counteract negative effects reductions copper distribution, by applying enriched with: micronutrients, enzymes involved activation natural defense, aminoacids, vitamins. halved dose Cu with allowed maintaining reduced vegetative vigor. second year treatment, addition significantly improved leaf gas exchanges photochemistry as well synthesis photosynthetic pigments. At level, induced an increase phenolics accompanied decrease soluble sugars. overall results showed that expected differences performance productivity vines linked different eco-physiological structural properties various treatments. also primed defenses at fruit levels, mainly modifications some traits, respectively.