Mitigation of salinity stress in Mentha piperita L. through foliar application of chitosan–salicylic acid encapsulated ZnO nanoparticles

× without foliar spraying enhanced proline, malondialdehyde, and sodium content. Treatment without salinity stress × foliar spraying of CS-Zn-SA NPs raised the magnesium, zinc, and iron content of mint. In general, it can be stated that the synergistic effects of combining salicylic acid, zinc, and chitosan partially enhanced the growth potential and improved physiological properties of peppermint plants under salt stress conditions. Following complementary field studies, the results would be advisable for the production section.