Effect of biostimulants on water content and micronutrients and macronutrients of Puccinellia distans under salinity stress

Abstract: Biostimulants are a variety of compounds of plant and animal origin that are used to improve the quality of plant growth. In this study, which was conducted in 1399, the effect of commercial biostimulant Algabon®, algal biostimulant [seaweed extract (SWE)], and namid (amino acid biostimulant) on the plant Puccinellia distans to reduce the effects of salinity stress by improving growth conditions and absorption of elements micronutrients and macronutrients was assessed. In a factorial design with Algabon® spray (0.5 g / l) and Bonamid® (2 g / l) and salt irrigation [300 mM / l (EC = 27.18 dS/m)] on 45-day-old seedlings grown in pots, experiment was performed. The results showed that the application of this concentration of salinity alone reduced the fresh and dry weight of shoots and roots, content of macro- and micronutrients of shoots and roots and their transfer factor (TF), decreased bioaccumulation factor (BF) of Cu, Fe, K, Na, P, Mn and Zn and increased of electrolyte leakage (EL) (significant at P < 0.05). Pre-treatment with biostimulants in salinity condition (SC) and non-salinity condition (NSC) reduced the effects of salinity stress in all indicators and Bonamid® in contrast to Algabon®, has better physiological effects on the plant. In general, it seems that biostimulants are also effective in reducing salinity stress in a salinity-compatible halophyte plant, but the method of use and amount of biostimulants need further study.