6533b855fe1ef96bd12b1297

RESEARCH PRODUCT

Soil and Regulated Deficit Irrigation Affect Growth, Yield and Quality of ‘Nero d’Avola’ Grapes in a Semi-Arid Environment

Antonino PisciottaRiccardo Lo BiancoRosario Di LorenzoG VescoMaria Gabriella Barbagallo

subject

0106 biological sciencesIrrigationDeficit irrigationpredawn and stem water potentialPlant ScienceVertisol01 natural sciencesVineyardArticle040501 horticulturegrape qualityYield (wine)Irrigation managementEcology Evolution Behavior and SystematicsGrape quality Predawn and stem water potential Yield Vitis vinifera<i>Vitis vinifera</i>EcologyBotany04 agricultural and veterinary sciencesSoil typeyieldSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeAgronomyQK1-989Vitis viniferaEnvironmental science0405 other agricultural sciencesEntisol010606 plant biology & botany

description

The present work studied the effect of two consecutive years of regulated deficit irrigation (RDI) compared to rain fed management on the vegetative growth, yield, and quality of ‘Nero d’Avola’ grapes. The trial was conducted separately in two soils (vertisol and entisol) located at the top and bottom hillside of the same vineyard. Vertisol was characterized by greater depth, organic matter, exchangeable K20, and total N than entisol. RDI was based on an irrigation volume at 25% of estimated crop evapotranspiration (ETc) up to end of veraison and 10% of estimated ETc up to 15 days before harvest. Predawn water potential (PDWP) was used as indicator of plant water status and irrigation timing. No difference in irrigation management was evident between vertisol and entisol. Under Mediterranean climate conditions, RDI was able to enhance grape yield and vegetative growth, especially in vertisol, but it reduced berry titratable acidity and total anthocyanins. ‘Nero d’Avola’ showed to adapt to drought conditions in the open field. Both soil type and irrigation regimes may provide opportunities to obtain different ‘Nero d’Avola’ wine quality and boost typicality.

yearjournalcountryeditionlanguage
2021-03-01Plants
10.3390/plants10040641http://dx.doi.org/10.3390/plants10040641