Research Article

Effects of Different Water Stress Levels, Heterogeneity, and Location on Berry Phytochemical Properties in an Organic and Conventional Vineyard (Vitis vinifera cv. Cabernet-Sauvignon)

Volume: 27 Number: 5 September 17, 2024
TR EN

Effects of Different Water Stress Levels, Heterogeneity, and Location on Berry Phytochemical Properties in an Organic and Conventional Vineyard (Vitis vinifera cv. Cabernet-Sauvignon)

Abstract

Investigate the effects of water stress on grape berry heterogeneity and composition in Cabernet-Sauvignon (Vitis vinifera L.) grapes under different farming practices (organic and conventional) based on soil structure and provide valuable information for the wine industry regarding quality. The research was conducted in two vineyards, one certified organic and the other following conventional practices. The experiment, designed with Split-Plot Experimental Design based on stress levels, was divided into two main plots, Organic and Conventional, and each of these plots was further divided into two subplots. The predawn leaf water potential results categorized the vines into two groups: those with values lower than -8 MPa and those above -8 MPa, which were labeled as Dryland-shallow soil and Baseland-deep soil, respectively, based on the location and soil type. During the harvest, grape clusters were collected and classified into three groups based on berry diameter (10mm-12mm, 12mm-14mm, 14mm-16mm). The results indicated that the 10mm-12mm berry size group generally exhibited the desired characteristics across all evaluated criteria. The total anthocyanin and total tannin content were higher in the 10mm-12mm berries from vines experiencing moderate stress (Stress 1), regardless of location. Additionally, the Dryland-shallow soil condition showed higher tannin content. On the other hand, grapes from high-stress vines displayed lower antioxidant values. The total polyphenol index content was higher in the organic vineyard. Based on the findings, it was suggested that to obtain high phytochemical compounds from Cabernet-Sauvignon grapes in the Tekirdağ region, cultivation should be carried out under Dryland-shallow soil conditions, where the predawn leaf water potential can drop as low as -0.8 MPa during the period between veraison and harvest. Moreover, berries between 10 mm and 12 mm might suit for this purpose.

Keywords

Thanks

The authors express their gratitude to ŞatoNuzun Vineyard and Winery Llc. and Umurbey Vineyards Llc. for allowing us to conduct our research in their vineyards.

References

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Details

Primary Language

English

Subjects

Oenology and Viticulture

Journal Section

Research Article

Early Pub Date

July 2, 2024

Publication Date

September 17, 2024

Submission Date

July 28, 2023

Acceptance Date

February 4, 2024

Published in Issue

Year 2024 Volume: 27 Number: 5

APA
Bahar, E., Korkutal, İ., & Uzun, M. (2024). Effects of Different Water Stress Levels, Heterogeneity, and Location on Berry Phytochemical Properties in an Organic and Conventional Vineyard (Vitis vinifera cv. Cabernet-Sauvignon). Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 27(5), 1042-1054. https://doi.org/10.18016/ksutarimdoga.vi.1333996

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