Micronutrient content of Coffea arabica L. varieties in the coffee-growing town of Jibacoa
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Abstract
The study of micronutrients in coffee is key to optimizing fertilization and improving crop productivity. This study evaluated foliar contents of Zn, Fe, Mn, Mo, and Cu in three varieties of Coffea arabica (Isla 5-3, Villalobos, and Bourbon Rojo) grown in reddish-brown Fersialitic soils in Jibacoa, Cuba. Leaves were collected in 2020 and 2023, washed, dried, and analyzed by atomic absorption spectrophotometry. Data were processed with ANOVA and Tukey's test (p ≤ 0.05). The results showed significant differences between varieties: Villalobos presented higher contents of Zn and Mn in 2020, but lower contents of Fe and Cu in 2023. The order of abundance was Mn > Fe > Cu > Mo > Zn, with interannual variability linked to genetic and environmental factors. It is concluded that foliar micronutrients depend on variety, agronomic management, and soil and climate conditions, highlighting the need to adjust fertilization recommendations accordingly.
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