Effect of Foliar Treatments with Calcium and Nitrogen on Oregano Yield

Oregano, Origanum vulgare L., is a perennial herbaceous plant belonging to the Lamiaceae family. Oregano shows variations in biomass yield and essential oil (EO) content due influence of abiotic biotic factors. The aim this study was assess effect different foliar applications based on calcium (Ca) nitrogen (N) morphological productive parameters oregano. Tests were carried out Sicily (Italy) 2020–2021. In each year, eight applied. Only flowers leaves used for extraction EO. For all study, except height inflorescence length, highest values found treated plants with respect control. nitrogen, an increase between 0.6 1.6 t ha−1 observed fresh yield, 0.5 0.9 dry yield. led EO 4 12 kg ha−1. results highlight that treatments Ca combination N enable growth crop production environments show poor water availability.