Abstract

TICONA QUENTA, María Elena  and  FERNANDEZ CHAVEZ, Celia María. Comparison of different lighting frequencies with led light in the crop of mint (Mentha piperita L.). Apthapi [online]. 2023, vol.9, n.1, pp. 77-87. ISSN 0102-0304.

ABSTRACT:                    This research was conducted in an urban area of district 16 San Antonio in the Villa Armonía zone, in the department of La Paz. The objective was to determine lighting frequencies and agronomic performance in the mint crop. The study was conducted in a Completely Randomized Design (CRD) with a bifactorial arrangement using the varieties: LED light exposure times as Factor A, for Factor Btwo planting densities were used,formingsixtreatments, and three replications, the response variables were: plant height, leaf length, leaf width, number of leaves per plant, total fresh weight, total dry weight and growth rate. The results obtained during the field study for plant height showed significant differences in factor A, registering an average height of 40.48 cm with respect to factor Band the interaction frequency* density, indicatingthat there is no interaction between the two factors for this variable. For leaf length, significant differences were recorded in factor A, with an average leaf length of 5.12cm and density, indicatingthat there is no interaction between the two factors for this variable. In leaf width, significant differences were obtained in the frequency with an average of 2.51 cm leaf width. For the number of leaves per plant, significant differences were recorded with an average of 17.88. For the interaction of the factors frequency*density, a significant result was obtained, which indicates that, with the interaction of illumination times and planting densities, there is a direct effect on the number of leaves. There were significant differences in the total fresh weight because the higher the frequency of illumination, the greater the demand of the plant and therefore its development will be satisfactory. For the total dry weight, significant differences were registered in factor A, registering an average of 2.17g of dry weight per plant and for the growth speed it was statistically demonstrated that the result was significant, which indicates that when using different frequencies of LED light, there is a direct effect on the growth speed since they responded in a more efficient way to their evaluated response variables, thus observing the interaction of lighting frequency - plant density, they had good results of mint production generatingan improvement in the economic yield of the crop.

Keywords : LEDS; frequency; illumination; mint; shortage.