Extracción de macronutrientes en tres variedades de lechuga (Lactuca sativa L.) bajo dos sistemas hidropónicos

Abstract

Lettuce is one of the most important vegetables in the world due to its consumption and commercialization. Likewise, its leaves contain diverse minerals and vitamins, which serve as antioxidants, making this plant one of the most essential within the vegetable group, due to its use in the human diet. The objective was to evaluate the extraction of macronutrients in three varieties of lettuce Capitata Janchen, Crespa and Regina 500, under two hydroponic systems. A completely randomized design (CRD) with bifactorial arrangement (3x2) was used, with 4 replications and 6 treatments, the variables evaluated were the concentration and extraction of N, P, K, Ca, Mg. According to the results, it can be seen that the nitrogen contents did not show significant differences in the hydroponic systems studied. In addition, it was found that there is a significant level of effect between varieties, as well as in the interaction of varieties vs. hydroponic systems. The best distribution of N-P-K-K-Ca-Mg in the three lettuce varieties under the hydroponic systems was in the nutrient film system (NFT).