The results showed that cv. Carma was the most appropriate in agricultural terms, with a yield significantly higher than cv. Ermes. In terms of plant density, 40,000 and 20,000 plants ha-1 gave the best results for yield, without significant impact by irrigation rates. Regarding the capability of these varieties to produce relevant chemicals, cv. Ermes yielded higher amounts than did cv. Carma. The statistical analyses concerning the influence of the irrigation treatments on fresh matter, total dry weight, dry weight of leaves and inflorescence, and stem weight showed significant differences between the fully irrigated plots and highest planting density compared with the lowest density plots. Regarding chemical compounds contents, the overall analysis showed higher contents of β-myrcene and limonene in comparison to α-pinene. The contents of these compounds were not determined by the crop variety, and were very similar in the studied cultivars