Recently, the shift towards safer methods of crop production has become imperative to safeguard public health, as the conventional chemical-based approaches have inflicted significant harm on public well-being and contributed to the proliferation of diseases. Coriander, a pivotal plant employed in medicinal formulations and nutritional supplements, stands out for its notable therapeutic effects. So, a field trial was conducted to evaluate the response of coriander to foliar application of various natural extracts, including seaweed extract (0.5, 1.0-, and 1.5-ml L-1), licorice root extract (5, 10, and 15 g L-1), and Aloe vera extract (5, 10, and 15%), with an additional control group without foliar application. Various parameters, including plant height (cm), branches number plant-1, fresh and dry weights (g plant-1), chlorophyll content (SPAD), leaves N, P and K (%), umbels number plant-1, seed yield (g plant-1), seed index (g 1000 seeds-1), essential oil (%), and oil yield (ml plant-1) were determined. The results show that all natural extracts significantly enhanced coriander performance compared to the control treatment, and the values for all studied parameters increased with higher application rates of the natural extract. Generally, the most favorable outcomes were observed in plants sprayed with licorice root extract at a rate of 15 g L-1, followed by those treated with licorice root extract at a rate of 10 g L-1. Plants sprayed with Aloe vera extract at a rate of 15% ranked third, followed by those treated with Aloe vera extract at a rate of 10%. The least favorable outcomes were recorded in plants grown without foliar application. Conversely, the seaweed treatments were positioned at the lower ranks, just preceding the control treatment. Accordingly, to obtain the highest yield of coriander plants we must spray plants with licorice root extract at a rate of 15 g L-1 three times at 45, 60, and 75 days from the sowing date.
Keywords : Coriander Seaweed, Licorice, Aloe vera, Yield,
Received:7/28/2022 12:00:00 AM; Accepted: 9/10/2022 12:00:00 AM