The invention discloses herein a multifunctional nutritional adjuvant chemical composition for use in agriculture with water comprises pH modifying complex matrix, pH indicators, surfactants, penetrating agents, auxiliary chemicals and solvent; having multiple uses in agriculture such as pH corrector, auto pH indicator, wetting agent adjuvant, plants immune system activator, plant defense mechanism enhancer, nutrient supplement and plant growth hormone provider. The invention further discloses the process for preparation of said multifunctional nutritional adjuvant chemical composition.