Influence of foliar treatments on chlorophyll content in tomatoes (Solanum lycopersicum L.) under abiotic stress conditions
DOI:
https://doi.org/10.59463/qpa06t17Keywords:
tomatoes, foliar fertilization, chlorophyll, phenological stage, abiotic stressAbstract
Foliar fertilization is a modern plant nutrition technique that ensures rapid nutrient absorption and supports photosynthetic processes. The aim of this study was to evaluate the influence of foliar fertilization on chlorophyll content in three tomato genotypes (Buzau 1600, Genotype 2, Genotype 3) cultivated in southern Romania under abiotic stress conditions. The treatment variants were: V0 (control – without foliar fertilization), V1 (Albit + Atonik), and V2 (Albit + Atonik + Polyamin). ANOVA analysis showed that the plant phenological stage had a highly significant effect on chlorophyll content (p < 0.001), while the fertilization variant and the phenological stage × variant interaction had no significant effect. Chlorophyll content ranged from 39 SPAD to 58 SPAD, with maximum values at phenological stage 5. The results suggest that the plant’s developmental stage is the main factor influencing chlorophyll levels. Monitoring phenological stages is essential for optimal application of agronomic interventions, and the use of variants that maintain high chlorophyll levels in later stages (e.g., V2) can support photosynthetic efficiency and yield.
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