Akademik Veri Yönetim Sistemi
NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA, cilt.54, sa.1, ss.14899, 2026 (SCI-Expanded, Scopus)
Lavender (Lavandula angustifolia
Mill.) is a valuable medicinal and aromatic plant widely cultivated in
semi-arid Mediterranean regions for its essential oil. However, under rainfed
conditions, low soil fertility can adversely affect plant growth and oil
quality. This study evaluated the effects of organo-mineral and mineral
fertilization on yield and essential oil composition of the ‘Raya’ cultivar
grown in calcareous, nutrient-poor soils of Antalya, Türkiye. For the field
experiment, plants were planted in October 2020. Fertilizer applications and
harvesting were carried out in 2022 and 2023. The field experiments were
conducted using a randomized complete block design with four replications and
four treatments: phosphorus-based organo-mineral (OM-NP), potassium-based organo-mineral
(OM-NK), mineral nitrogen (M-N), and control (unfertilized). Fertilization
significantly increased fresh and dry herb yields in both experimental years,
with the highest biomass obtained from OM-NK plots. OM-NP resulted in the
highest essential oil content in 2022 (6.43%), whereas in 2023 the highest
value was recorded under OM-NK fertilization (5.15%). The major constituents
were linalool (34.7-61.7%) and linalyl acetate (7.3-21.8%), which were not
significantly influenced by fertilization. In contrast, stress-related
compounds such as limonene, 1,8-cineole, and camphor were more abundant in
control plants. Under low soil fertility conditions, organo-mineral
fertilization resulted in marked increases in lavender yield while having only
a limited effect on the essential oil composition.