The Effects of Organic Soil Amendments on Some Physicochemical Properties of Salvia viridis (Salvia viridis L) under Salinity Stress
Subject Areas : Bio-fertilizer
1 - Department of Biology, Payam Noor University, Tehran, Iran
Keywords: Proline, Seaweed extract , Morphological characteristics, Cow manure, Vermicompost,
Abstract :
Salinity is one of the major factors that adversely affect the performance and growth parameters of most agricultural crops worldwide. Plant growth and the levels of secondary metabolites are influenced by salt stress. The aim of this study was to investigate the effect of soil organic amendments on some physicochemical traits of Salvia viridis L. plants under salt stress. The present study was conducted in a factorial design in a completely randomized manner. The treatments included five levels of organic amendments (control without any amendment, half and one gram of seaweed extract per liter of water, 20% volume of pot cow manure compost, and 20% volume of pot vermicompost) and three levels of soil salinity (3, 6, and 9 deci-Siemens per meter) with three replications in a greenhouse. The control treatment had no fertilizer. The findings indicated that as the salinity level increased, growth parameters (fresh weight, dry weight of stem and leaf, leaf area), chlorophyll content, and proline decreased, while malondialdehyde increased. The highest fresh and dry weight of stem and leaf, proline content, and essential oil percentage were obtained in plants treated with seaweed extract, while all amendments showed higher chlorophyll content compared to the control. Furthermore, among the investigated treatments, seaweed extract at a concentration of 1 milligram per liter proved to be more effective in preserving the plant from the adverse effects of salt stress and improving its growth characteristics.
