تأثير إضافة مستحلب الأسماك و Vermicompost في نمو نبات الطرخون (Artemisia dracunculus L.) ومحتواه من بعض المركبات الفعّالة طبياً

Effect of adding fish emulsion and vermicompost on the growth of tarragon (Artemisia dracunculus L.) and it’s content of some medically active substances

Abstract

The experiment was carried out in the canopy of the Horticulture and Landscape Department – College of Agriculture – University of Kerbala, Iraq during the spring season of 2023 to study the effect of fish emulsion and vermicompost on the vegetative and root growth of the tarragon plant and its content of medically active substances. The study was implemented as a factorial experiment with a randomized complete block design (R.C.B.D.) with three replications. The experiment included two factors: the first factor was fish emulsion, which was added at four concentrations, namely 0, 1, 2, and 3%, and was symbolized as F1, F2, F3, and F4, respectively, and was added five times every two weeks. As for the second factor, it was vermicompost, which was added before Transfer the seedlings to pots at four levels, namely 0, 25, 50, and 100 g pot-1, and symbolize them as V1, V2, V3, and V4, respectively. The means were compared using least significant difference (LSD) at the 0.05 probability level. The most important results were obtained as shown below:
1- The results showed that adding fish emulsion had a significant effect on most of the characteristics of vegetative and root growth, chemical characteristics, and the content of active compounds in the plant (glycosides and vitamin C).
2- The effect of adding Vermicompost was significant on plant height, chlorophyll content in leaves, root length, phosphorus content in leaves, and all types of glycosides in the plant.
3- The results showed a difference in the significant effects of the intervention treatments between the two study factors on the studied traits, as the F4V4 intervention treatment gave the highest rate of plant height and number of branches, as it gave 85.16 cm and 32.50 branches per plant, and the highest rate of Eriodityol and Quercetin-3-rhamuoside. Querectin-3-galactoside, Vitexin, rutin, Luteolin-3-galctasides, and vitamin C, which gave 1463.82 µg ml-1, 1441.84 µg ml-1, 1618.64 µg ml-1, 1448.60 µg ml-1, and 1423.3 µg ml-1. 1, 1464.72 µg ml-1 and 107.0 mg 100 g-1 respectively, while the F2V3 intervention treatment gave the highest rate for the stem diameter characteristic, which amounted to 3.127 mm, and the F1V3 treatment gave the highest rate for the dry matter percentage, which amounted to 20.57%, and the highest rate for the phosphorus percentage in the leaves, which amounted to 0.534%. The F3V3 treatment recorded the highest rate for the leaf chlorophyll content, which gave 46.91 mg. g-1 fresh weight. The F2V4 intervention treatment gave the highest rate of root volume and dry root weight, giving 15.50 cm3 and 2.62 g, respectively, while F3V2 gave the highest rate of root length characteristic, giving 29.67 cm. The F4V1 intervention treatment also gave the highest rate of leaf nitrogen content and the total protein percentage in the leaves, giving 3.407% and 25.67%, respectively, while the F1V4 treatment gave the highest rate of potassium leaf content, reaching 5.58%, and the F4V3 treatment gave the highest rate of carbohydrate percentage in the leaves, it reached 429 mg 100 g-1 fresh weight, while F4V2 gave the highest rate of rutinoside and Kempferol-3-rhamnoside, giving 1071.19 µg ml-1 and 1496.1 µg ml-1, respectively.