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- Title
Onion (Allium cepa L.) Yield and Quality Depending on Biostimulants and Nitrogen Fertilization—A Chemometric Perspective.
- Authors
Vojnović, Đorđe; Maksimović, Ivana; Tepić Horecki, Aleksandra; Karadžić Banjac, Milica; Kovačević, Strahinja; Daničić, Tatjana; Podunavac-Kuzmanović, Sanja; Ilin, Žarko
- Abstract
The influence of biostimulants (B) and nitrogen (N) fertilization on the yield and quality of onions were investigated. Experiments in the field with directly seeded (DS) onions and those from sets (FS) were carried out in 2021 in the Autonomous Province of Vojvodina (Serbia). HumiBlack® (B1), Tifi® (B2), and Agasi® (B3) were used as B, and there was a control without B. Four N doses were used: 64, 100, 150 (standard dose), and 200 kg N/ha. The highest yields of DS onions (63.9 t/ha) and FS onions (52, 1 t/ha) were measured on treatment B2 × 150 kg N/ha. The highest total sugar content (80.6 g/100 g DM) was measured in FS onions under treatment B2 × 100 kg N/ha. Total nitrogen and protein content were the highest in DS onions treated with B2 × 200 kg N/ha, where total nitrogen was 2.3 g/100 g DM and protein content was 14.5 g/100 g DM. Depending on B and N, titratable acidity ranged from 1.7 to 3.6 g/100 g DM. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used to analyze onions and showed that FS onions have lower values of total phenolics and crude fiber content, DPPH, FRAP, and ABTS compared to DS onions. In this study, a chemometric approach was suitable for grouping onions according to treatment effect and main interactions between B and N.
- Subjects
ONIONS; CHEMOMETRICS; PRINCIPAL components analysis; G proteins; HIERARCHICAL clustering (Cluster analysis); CLUSTER analysis (Statistics)
- Publication
Processes, 2023, Vol 11, Issue 3, p684
- ISSN
2227-9717
- Publication type
Article
- DOI
10.3390/pr11030684