The effects of nitrogen ratio (Ammonium: Nitrate) supply on Dry Matter and the biochemical composition and proline content of areal and root organs of Balngue (Lalemanthia royleana L.) in saline conditions

Salinity is one of the main cause’s reduced growth and crop yield especially in arid and semi-arid regions. This study aimed to evaluate the effect of different sources of nitrogen fertilizers and salt tolerance on balangue herbs. Experiment in factorial experiment were conducted base a completely randomized design with three replications in the Laboratory of Medicinal Plants. Factor of salinity (control, 40, 80, 120 and 150 mM) and nitrogen source levels (Hoagland, 0:100, 25:75, 50:50, 75:25 and 0:100 ammonium: nitrate) and were done in a greenhouse. The experiment result showed, characteristics the content of proline, glucose, pigments photosynthesis, and shoot elements content of sodium and potassium and nitrate reductase enzyme activity and morphological dry ground and shoot dry weight were significant, respectively. Mean comparison of data showed that salinity content of proline (55.5 %), glucose (24.9 %) increased in the shoot. Other hand, with increasing salinity, sodium rate (18 %) increased significantly, potassium uptake (12 %) was prevented by sodium. Also, salinity reduced the nitrate reductase activity (24%) in balango. However, the increase of ammonium nitrogen increased nitrate reductase activity in leaf (16.3%), stem (35.3%) and root (16.6%). On the other hand, an increase in the ratio of ammonium nitrogen resulted in a decrease in fresh and dry weight of the balango and airspace of the plant, the it represents the destructive effect of ammonium on the plant.