Evaluation of morphophysiological reaction of Eryngium campestre under the influence of nitroxin, humic acid and glycine

Eryngium campestre is a medicinal plant belonging to the Apiaceae family, which is very important in the pharmaceutical industry. The present study was conducted to investigate the effect of glycine, nitroxin fertilizer, and humic acid on morphophysiological traits of Eringum campster. The experiment was conducted in factorial based on a completely randomized design with 3 factors namely, nitroxin (0, 1, 2 ml.l-1), humic acid (0, 1, 2 ml.l-1), and glycine (0, 75, 150 g.L-1) and 3 replications in the greenhouse of Gorgan University of Agricultural Sciences and Natural Resources in the autumn of 2019. The measured traits included root fresh weight, root dry weight, root length, plant height, number of leaves, leaf surface, and absorption rate of nitrogen, potassium, and phosphorus elements by leaves. Results showed that the traits measured under nitroxin, glycine, and humic acid factors separately and in combination with each other were significantly different compared to the control. In general, the results showed that the factors used in this study had the potential to improve the quantitative and qualitative traits of the Eringum campster plant and can be used in commercial production.