The following experiment on tarragon (Artemisia dracunculus L.) transpired in the spring of 2023 at the Kerbala University, Kerbala, Iraq. A factorial experiment with a randomized complete block design and three replications comprised the investigations. The first factor was fish emulsion with four different concentrations (0%, 1%, 2%, and 3%), while the second was vermicompost application with four different levels (0, 25, 50, and 100 g pot-1) before moving the seedlings to pots containing them. The results showed adding fish emulsion at 2% concentration significantly affected the percentage of nitrogen and protein in the leaves, with averages of 3.407% and 21.29%, respectively. The outcomes also revealed adding vermicompost fertilizer at a level of 100 g was superior in phosphorus and carbohydrate contents in the leaves with averages of 0.482% and 379 mg 100 g-1. As for the interaction between the factors, it was remarkably significant for all the traits under study. The findings confirmed the effectiveness of fertilizers resulting from organic waste, individually or in combination, to raise the efficiency of the qualitative traits of horticultural crops, as well as reduce the chemical fertilizers’ use in maintaining a sustainable and nontoxic ecosystem.
Tarragon (A. dracunculus L.), fish emulsion, vermicompost fertilizer, biochemical traits
In tarragon (A. dracunculus L.), the addition of fish emulsion (2%) had a significant effect on most biochemical traits in the leaves. Likewise, adding vermicompost with the highest dose (100 g pot-1) significantly increased the phosphorus content in leaves.