Effect of the biostimulant VIUSIDagro on the morpho-agronomic parameters of pomegranate in Cuba
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Abstract
According to FAO, tropical fruit trees account for 60% of the species with underutilized potential in Latin America. In this regard, pomegranate (Punica granatum L.) represents a strategic crop due to its adaptability to adverse conditions and its high nutraceutical value. However, the increase in average temperatures and irregular rainfall have reduced the yields of traditional crops. To mitigate these effects, the use of biostimulants could be an environmentally friendly alternative and help increase yields. In this study the effect of the biostimulant VIUSID agro on morpho-agronomic parameters of pomegranate was evaluated. The experiment was conducted at the Basic Scientific Technological Unit (UCTB) in Alquízar, Cuba, using a completely randomized design with four treatments: three concentrations of VIUSID agro and a control. Each treatment was replicated four times. Growth variables (foliar area), vegetative variables (flower number and fruit set percentage) and quality of fruits (peel mass, seed mass, juice yield and soluble solids) were measured. Data were analyzed using one-way ANOVA, and mean differences were compared with Tukey’s HSD test. Results showed that lower doses increased significantly peel mass, total seed mass, and juice yield. The higher dose showed intermediate effects, suggesting a non-linear dose-response relationship. No significant differences were observed in leaf area or flower number. These results allowed to conclude that VIUSID agro at 2-3 mL in 5 L improves pomegranate fruit quality and yield, primarily through physical rather than biochemical enhancements. The non-linear response at higher doses warrants further research to optimize application protocols.
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