Patent ID: 6458747
Filing Date: 2002-10-01
Classification: C05F,C05G,Y02P

Abstract:
A method for making a slow acting, high nitrogen fertilizer comprising the following acts:a) blending a mixture of components comprising pulverized alfalfa, urea, a synthetic wetting agent and at least one high tannin component chosen from the group consisting of pulverized raisin stems, pulverized grape stems, and pulverized nut shells, wherein said mixture of components comprises between about 52% to about 82% of alfalfa plus the at least one high tannin component and the amount of urea is chosen such that said mixture of components has a nitrogen content between about 6% and about 15%; b) heating said mixture of components to an elevated temperature above about 170Â° F. in the presence of steam to form a reacted mass; and c) forming said reacted mass into fertilizer pellets, whereby said fertilizer pellets may be conveniently applied to a soil surface and will quickly deteriorate when watered and whereby said urea will be slowly released into the soil.