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Basil (Ocimum basilicum L.) is a promising crop of recent exploitation and expansion in Colombia, however, this trend is limited by ignorance of nutrition requirements of elements such as N and K. With the application of optimal doses of N and K, producers can increase the productivity and quality of this production system, attracting new producers. The objective of this study was to evaluate the effect of the application of nitrogen and potassium on the content and ratio of macronutrients in basil plant tissue. The doses of N and K were combined based on the increased Box-Berard matrix (3): 2+2k+2k+1+1, constituting a total of 14 treatments, arranged under a completely randomized design with three repetitions. The dry mass (DM) and the relationships N/K, N/P, N/S, N/Ca, K/Ca, K/Mg, K/P and K/S were studied, and analyzed with tests of means and the response surface methodology. Basil developed a higher DM when the leaf ratio of N and K with the rest of the nutrients was high, except for the ratio of these (N/K), which was close. In this sense, the DM was 116.72% higher for the ratios associated with nitrogen and 120.84% for those of potassium, with respect to the minimum doses of N and K. In basil, the foliar concentration of N and K should predominate over the rest of macroelements, a condition obtained with doses of 100190kg ha of N and 125-237.5kg ha of K.

Macronutrientes en el tejido foliar de albahaca Ocimum basilicum L. en respuesta a la aplicación de nitrógeno y potasio