The present invention relates to an aqueous formulation comprising at least one plant nutrient, one fatty acid (C1-C3) alkyl ester, and a betaine surfactant, wherein the fatty acid (C1-C3) alkyl ester is present in an amount ranging from 0.5 to 16 pbw, for instance from 1 to 16 pbw, based on 100 pbw of the formulation, the betaine surfactant is present in an amount of at least 5 pbw, based on 100 pbw of the formulation, and the weight ratio between the betaine surfactant and the fatty acid (C1-C3) alkyl ester is greater than 0.9. It also relates to the use of such formulations as an agricultural adjuvant composition.
