Abstract: The invention describes a thixotropic fertilizer composition which includes a first aqueous component having a predetermined concentration of divalent cations and of organic matter, and a second aqueous component comprising a predetermined concentration of phosphorus, and having substantially no divalent cations. The first and second aqueous components are mixed in predetermined proportions just prior to application of the fertilizer to produce a thixotropic fertilizer composition having a concentration of divalent cations of substantially from about 1% to about 15% by weight, from about 25% to about 50% by weight of dry organic matter, and from about 1% to about 30% by weight of phosphorus. An apparatus for applying the thixotropic fertilizer includes a plurality of containers, a plurality of conduits, a mixing chamber, a pump, and a nozzle.