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Journals / Black Sea Journal of Agriculture / 2026 / Cilt: 8 Sayı: 4

The Effects of Nitrogen Fertilization on Quality and Antioxidant Compounds in Alphonse Lavallée Grape Varieties

Filiz Hallaç Türk(Isparta Uygulamalı Bilimler Üniversitesi)0000-0001-6697-659X
Pages
510–517
Publication Date
2025-07-15
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results of the two-year study showed that increases in nitrogen doses caused decreases in total phenolic, total flavanol, anthocyanin, total soluble solid, and the maturity index, while titratable acidity and L-ascorbic acid content increased.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study, which aimed to determine the effects of different nitrogen doses (0, 50, 100, 150 and 200 kg/ha) on the quality of Alphonse Lavallée grapes, was conducted in the Keçiborlu district of Isparta in 2021 and 2022.
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Key Findings & Data:The study was designed as a randomized block design with three replications.
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Conclusion & Impact:The results of the two-year study showed that increases in nitrogen doses caused decreases in total phenolic, total flavanol, anthocyanin, total soluble solid, and the maturity index, while titratable acidity and L-ascorbic acid content increased.
🔬Design:Araştırma Makalesi
📍Scope:2021 Verileri
⚙️Variables:Nitrogen fertilization · Total phenolic content · Total flavanol

Abstract

This study, which aimed to determine the effects of different nitrogen doses (0, 50, 100, 150 and 200 kg/ha) on the quality of Alphonse Lavallée grapes, was conducted in the Keçiborlu district of Isparta in 2021 and 2022. The study was designed as a randomized block design with three replications. Quality analysis and determination of certain antioxidant compounds were conducted by measuring total soluble solid, pH, titratable acidity, maturity index, total phenolic content, total flavanol content, anthocyanin content and L-ascorbic acid content. The results of the two-year study showed that increases in nitrogen doses caused decreases in total phenolic, total flavanol, anthocyanin, total soluble solid, and the maturity index, while titratable acidity and L-ascorbic acid content increased.

Özet

This study, which aimed to determine the effects of different nitrogen doses (0, 50, 100, 150 and 200 kg/ha) on the quality of Alphonse Lavallée grapes, was conducted in the Keçiborlu district of Isparta in 2021 and 2022. The study was designed as a randomized block design with three replications. Quality analysis and determination of certain antioxidant compounds were conducted by measuring total soluble solid, pH, titratable acidity, maturity index, total phenolic content, total flavanol content, anthocyanin content and L-ascorbic acid content. The results of the two-year study showed that increases in nitrogen doses caused decreases in total phenolic, total flavanol, anthocyanin, total soluble solid, and the maturity index, while titratable acidity and L-ascorbic acid content increased.

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Cite This Article

Türk, F. H. (2025). The Effects of Nitrogen Fertilization on Quality and Antioxidant Compounds in Alphonse Lavallée Grape Varieties. Black Sea Journal of Agriculture, Cilt: 8 Sayı: 4, 510–517. https://doi.org/10.47115/bsagriculture.1707723

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