Coriander is one of the most important essential oil crops cultivated worldwide. A field trial was carried out during the period 2023–2025 in Southeast Bulgaria to evaluate the effect of different sowing rates (200, 250, 300, and 350 germinating seeds per m² (g.s./m2)) on the components of productivity and seed yield of the coriander cultivar Yantar. The experiment was arranged in a randomized complete block design with four replications and a plot size of 15 m², following winter wheat as a preceding crop. The growing of plants was performed in compliance with the standard technology. The following parameters were determined: plant height (cm), number of umbels per plant, umbel diameter (cm), number of umbellets per umbel, number of seeds per umbel, seed weight per plant (g), 1000-seed weight (g), and seed yield (kg/ha). The results indicated that the sowing rate of 300 g.s./m² resulted in the highest values for most productivity traits, including number of umbels per plant, umbel diameter, number of umbellets per umbel, number of seeds per umbel, seed weight per plant, and 1000-seed weight. The tallest plants were reported at the sowing rate of 350 g.s./m². The sowing rate of 300 g.s./m² was found to be the most effective for the Yantar coriander cultivar under the agroecological conditions of Southeast Bulgaria.

coriander, seed rate, elements of productivity, seed yield

agronomy

Presentation: poster