The Effect of Soil Amendment of Pumice and Foliar Application of Acadian and Estemplex Algal Extracts on Growth and Some Physiological Characteristics of Coriandrum sativum L.

In order to study the effects of pumice (control, 30 and 60 ton ha-1) and different concentrations of Acadian and Estemplex (algae extract) (0, 1.5, 3 and 4.5 ml L-1) on the growth and some physiological characteristics of Coriandrum sativum L., an experiment was conducted as factorial based on a randomized complete block design with three replications at Azarbaijan’s Shahid Madani University, Iran during 2018. The results were suggestive of significant interactions of soil cover and foliar applications on phenolics content, superoxide dismutase activity, Mg, Zn, K and P content of Coriandrum sativum L. The highest concentration of total phenolic compounds was recorded with application of 30 ton ha-1 pumice × 4.5 ml L-1 Acadian and Estemplex. Moreover, the highest concentrations of chlorophyll a and b were recorded at 4.5 ml L-1 Acadian and 3 and 4.5 ml L-1 Estemplex. Application of 3 and 4.5 ml L-1 Estemplex and 3 ml L-1 Acadian led to the greatest total soluble solid contents. The highest amount of plant dry weight were achieved in the presence of 3 and 4.5 ml L-1 Acadian and 1.5 and 3 ml L-1 Estemplex. The highest chlorophyll, flavonoids, protein, and N concentrations and plant dry weight were observed in the presence of 30 ton ha-1 pumice soil cover. Furthermore, 30 and 60 ton ha-1 pumice application reduced IC50 content. In conclusion, application of 30 ton ha-1 pumice and foliar-applied bio-fertilizers, particularly Estemplex (1.5, 3 and 4.5 ml L-1) had positive effects on the growth and physiological traits of Coriandrum sativum L.