Controlled release particulate fertilizer composition
AssigneeThe O.M. Scott & Sons Company
InventorHarvey M. Goertz
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Abstract
A controlled release particulate fertilizer composition prepared by the reaction of urea and formaldehyde comprising polymeric nitrogen in the form of methylene urea polymers of varying chain length. The majority of the polymeric nitrogen consists of short chain polymers selected from the group consisting of methylene diurea, dimethylene triurea and mixtures thereof and the average degree of polymerization of urea and formaldehyde is greater than 1.5. The fertilizer compositions combine safety and high levels of plant nutrient efficiency.
Claims16
In a controlled release solid fertilizer composition in particulate form comprising the reaction product of urea and formaldehyde, said reaction product containing polymeric nitrogen in the form of methylene urea polymers of varying chain length, the improvement in which at least 60% of the polymeric nitrogen is in the form of cold water soluble nitrogen polymers consisting of short chain polymers selected from the group consisting of methylene diurea and mixtures of methylene diurea and dimethylene triurea.
Dependencies are inferred from the claim text.