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

Abstract

The lettuce crop is known and cultivated worldwide, being the most important among the leafy vegetables consumed raw, in recent years new cultivation techniques have been used such as hydroponics which is a technique that allows to grow plants without soil and thanks to this alternative the crop is not affected by diseases that are in the ground allowing to make profits very high economic, under this context, the objective of the present investigation was to evaluate the extraction of micronutrients Fe-Cu-Zn-B-Mn in three varieties of lettuce (Lactuca sativa L.) under two hydroponic systems. Therefore, the research work was carried out in the Experimental Campus of the Teodomira of the Technical University of Manabí and for this an experimental design was used completely elevating with bifactorial arrangement consisting of 6 treatments and 4 repetitions. A variance analysis was performed to determine the difference between treatments and the Tukey test was used to compare means of treatments, found that the Capitata in the two hydroponic systems plus the Crespa with NFT was where the best results were obtained with values ranging from 51 to 43 ppm. In this sense, the greatest influence on the extraction of micronutrients in lettuce leaves was obtained in the hydroponic system NFT in the variety Crespa, which reached the highest concentration of Boron (B), Zinc (Zn) and Manganese (Mn)while the hydroponic floating root system in the Regina 500 variety had a higher concentration of Copper (Cu) and Iron (Fe).