Methods of increasing grade values of plant nutrients and compositions produced from said methods. A plant nutrient is combined with a colloidal micelle, the later having a particle sized between approximately 1 to 500 nm. This mixture is subjected to colloidal milling until it reaches a temperature of at least approximately 65° F. or milling is carried out above atmospheric pressure. In one instance, water is added to the mixture prior to milling, the results of which are spray dried forming a powder having increased plant nutrient values. In a second embodiment, the milled mixture is added to water for application to an agricultural product.