https://doi.org/10.37229/fsa.fjas.2025.10.05

The current experiment was done through two consecutive seasons (2023/2024 and 2024/2025). This work was established at a privet experimental field, Assiut Governorate, Egypt. The treatments of study was distributed as split-plot design, the main factor was organic fertilization at different rates (0, 10, 20 and 40 m³/ hectare), where, the sub plot factor was seaweed extract (SW) concentration (0, 3, 6 and 12 ml/l) as well as their interactions between them. The tallest caraway plants (107.33 and 112,00 cm), more branches per plant (29.33 and 31.67), heaviest fresh herb weight (178.67 and 185.33 g/plant) and heaviest dry herb weight (36.17 and 38.17 g/plant) were achieved with 40 ton/hectare of farm yard manure (FYM) combined with 12 ml/l of seaweed extract. Likewise, fertilized caraway plants with 40 m³ FYM/hectare combined with the highest concentration of SW gave the highest values of umbels number per plant and fruit and volatile oil yield per plant and per hectare compared to the other treatments under study. The highest benefit/ cost ratio (2.250) was obtained with the combination treatment of 40 m³ FYM/ hectare with 12 ml SW/l compared to the other combinations. Overall, it could be concluded that applying farmyard manure along with seaweed extract produced the highest net return and value for caraway plants.