N-aliphatic and N,N-aliphatic phosphoric triamide urease inhibitors and urease inhibited urea based fertilizer compositions
AssigneeAllied Corporation
InventorsJaroslav F. Kolc, Michael D. Swerdloff, Milorad M. Rogic, Larry L. Hendrickson, Michael Van Der Puy
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Abstract
The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more phosphoric triamide compounds, and methods and composition for inhibiting the urease catalyzed hydrolysis of urea through use of such compounds.
Claims52
A composition comprising an acceptable carrier and a urease inhibiting effective amount of one or more phosphoric triamide compounds of the formula:
- ##STR5## wherein:
- X is oxygen or sulfur;
- R.sub.1 is alkyl, cycloalkenyl, alkenyl, alkynyl, aralkyl or cycloalkyl;
- R.sub.2 is R.sub.1, hydrogen, or R.sub.1 and R.sub.2 together may form an alkylene or alkenylene chain which may optionally include one or more heteroatoms of oxygen, nitrogen, or sulfur completing a 3, 4, 5, 6, 7 or 8 membered ring structure;
- and
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are individually hydrogen or alkyl having from 1 to about 4 carbon atoms.
A method of inhibiting the urease catalyzed hydrolysis of urea at a situs which comprises applying to said situs a urease inhibiting effective amount of one or more phosphoric triamide compounds of the formula:
- ##STR6## wherein:
- X is sulfur or oxygen;
- R.sub.1 is alkyl, cycloalkenyl, alkenyl, alkynyl, aralkyl or cycloalkyl;
- R.sub.2 is hydrogen, R.sub.1, or R.sub.1 and R.sub.2 together may form an alkylene or alkenylene chain which may optionally include one or more heteroatoms of oxygen, nitrogen or sulfur completing a 3, 4, 5, 6, 7 or 8 membered ring structure;
- and
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are individually hydrogen or alkyl having from 1 to about 4 carbon atoms.
An improved fertilizer composition which comprises urea and/or one or more compounds capable of forming urea under the use conditions of said composition and a urease inhibiting effective amount of one or more phosphoric triamide compounds of the formula:
- ##STR7## wherein:
- X is sulfur and oxygen;
- R.sub.1 is alkyl, cycloalkenyl, alkenyl, alkynyl, aralkyl or cycloalkyl;
- R.sub.2 is hydrogen, R.sub.1, or R.sub.1 and R.sub.2 together may form an alkylene or alkenylene chain which may optionally include one or more heteroatoms of oxygen, nitrogen, or sulfur completing a 3, 4, 5, 6, 7 or 8 membered ring structure;
- and
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are individually hydrogen or alkyl having from 1 to about 4 carbon atoms.
Dependencies are inferred from the claim text.