SUMMARY
Soil salinization is a limiting factor for the development of agriculture, particularly in arid and semi-arid areas where production is reduced in aromatic species sensitive to saline stress. Homeopathy is a branch of alternative medicine with progressive application in humans, animals and plants. The objective was to use the homeopathic medicine Natrum muriaticum (obtained from sea salt) as an extenuating of the NaCl-stress effects on the growth and development of hydroponic basil (Ocimum basilicum L.). A completely randomized design with factorial arrangement (2A × 2B × 3C) was used, considering the Napoletano and Emily varieties as factor A, the concentration of NaCl (0 and 75 mM) as factor B and the homeopathic treatment (7CH and 13CH Natrum muriaticum) as factor C, with a total of 12 treatments with four replications. Stem and root length, leaf area, fresh and dry root biomass, fresh and dry aerial biomass were evaluated. Analysis of variance and multiple comparisons of means (Tukey HSD p=0.05) were done. The results show that the application of both homeopathic dynamics (7CH and 13CH) led to an increase in the morphometric variables evaluated; however, the application of Natrum muriaticum 7CH increased the values of the variables evaluated in Napoletano. The Similia Similibus Curentur homoeopathic principle is confirmed and it is estimated that agricultural homeopathy will increase the production of Ocimum basilicum L., increasing its tolerance to abiotic stress conditions, as well as being compatible with traditional, ecological and organic agriculture.