Effects of γ-polyglutamic acid on grassland sandy soil properties and plant functional traits exposed to drought stress.

ABSTRACT: The current study provides field experimental data that support the use of γ-polyglutamic acid (γ-PGA) in drought stress and proposes its application in grassland management. We hypothesized that water treatment combined with PGA application to sandy soil would reduce drought stress in grasslands more effectively than watering alone. A randomized block design was used, with three replicate watering blocks (no watering, weekly watering, and monthly watering) and PGA treatments at four different concentrations (0%, 0.3%, 1%, and 2% PGA). The results showed that PGA acts as a biostimulant, alleviating the effects of stress in plants by: (1) increasing the availability of ions, especially K⁺, Zn²⁺, Mn²⁺, Fe^2+/3+, Ca²⁺, and Mg²⁺,

SUBMITTER: Skalski T 

PROVIDER: S-EPMC10866894 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature