Patent ID: 9073795
Filing Date: 2015-07-07
Classification: C05B

Abstract:
1. A method for applying an agricultural fertilizer to a field through an irrigation system using hard water from a source of hard water, the method comprising: (a) providing a fertilizer composition comprising a mixture of (i) a fertilizer component comprising an ammonium phosphate or an ammonium sulfate, and (ii) an acid comprising one or more of a citric acid, a malic acid, a formic acid, and an oxalic acid; (b) combining the fertilizer composition with hard water from the source of hard water and providing the mixture to an irrigation system; and (c) using the irrigation system to apply the mixture of fertilizer composition and hard water to the field; wherein the acid in the fertilizer composition inhibits the cations in the hard water from forming insoluble precipitates in the irrigation system and further wherein the acid comprises a combination of an organic acid and an inorganic acid.