Macronutrients are essential to several metabolic reactions in plants, as well as to the normal development of vital plant activities. The aim of the current study was to evaluate growth, as well as the content and chemical composition of Melissa officinalis L. essential oil, in plants subjected to mineral omission. The experiment was carried out with Hoagland & Arnon nutrient solution in a hydroponic system, based on the missing element technique. Seven treatments were evaluated: one comprised all nutrients (full treatment) and six missed one nutrient in each solution (-N, -P, -K, -Ca, -Mg, and -S). The increasing order of limiting nutrients for total dry weight was N > K = Ca = P > S = Mg, and that for essential oil content was N > Ca > S = K = P > Mg. Nutrient omission also affected content and chemical composition of its essential oil. Omission of Mg increased chlorophyll, carotenoid and essential oil contents. Thus, it is possible establishing adequate macroelements management to achieve higher growth and content of essential oil.

大量营养素对于植物中几种新陈代谢反应以及植物重要生命的正常发育至关重要。当前研究的目的是评估蜜蜂issa的生长以及其含量和化学成分L.精油，在遭受矿物遗漏的植物中。基于缺少元素技术，使用Hoagland＆Arnon营养液在水培系统中进行了该实验。评估了7种处理方法：一种包含所有营养素（完全处理），六种在每种溶液中漏掉一种营养素（-N，-P，-K，-Ca，-Mg和-S）。限制养分对总干重的增加顺序为：N> K = Ca = P> S = Mg，对于精油含量，N = Ca> S = K = P> Mg。营养物质的缺乏也影响了其精油的含量和化学组成。省略镁会增加叶绿素，类胡萝卜素和精油的含量。因此，有可能建立适当的宏观元素管理以实现更高的增长和精油含量。