More specifically, How do I know which the correct pH levels are for an Acid Salicylic solution at a concentrations of 0.5 to 2 µM, if I want to make foliar treatments on blackberry?
Dear Sir. Concerning your issue about the right pH levels for an Acid Salicylic solution. Salicylic acid is a weak acid, it lowers the pH of the medium from 5.8 to 5.4 when added at a final concentration of 200 µM. I think the following below links may help you in your analysis: