Effect of boron and zinc sulfate fertilizers on the yield and quality of garlic (Allium sativum L.) grown at different planting dates in Ilocos Norte [Philippines]
2024
Felipe, A.G.
The research determined the benefits and drawbacks of foliar fertilizer application at different planting dates on the yield and postharvest quality of garlic. The study used boron, zinc sulfate, and their combination as foliar fertilizers. The experiment was conducted in Burgos, Ilocos Norte,[Philippines] one of the largest garlic-producing municipalities in Region 1 [Ilocos Region], using a Randomized Complete Block Design. The foliar fertilizer increased garlic growth and yield, resulting in better plant health and productivity. Specifically, plants treated with 0.2 % boron exhibited the maximum vegetative growth and yield. However, planting dates did not significantly affect yield. In terms of postharvest qualities, boron increased the total soluble solids (TSS) content of the bulb, and early planting in November led to higher total phenolic and protein content. In contrast, late planting in December resulted in higher sulfur content. During storage at ambient conditions, protein, ash, total phenolic content, and fat increased while calories, sulfur, moisture, and carbohydrates decreased. Boron fertilizer led to higher ROI. The results of the study suggest that producers in Burgos, Ilocos Norte, can plant garlic anytime from the fourth week of October to the second week of December and apply boron as foliar fertilizer for higher yield.
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