CONTROLLED RELEASE FERTILIZERS CONTAINING CALCIUM SULFATE AND PROCESSES FOR MAKING SAME

摘要

An extended release fertilizer that includes an absorbent material containing capillaries/voids between 10-200 microns in cross-sectional diameter which is impregnated in an amount of 40-95% of the capillaries/voids volume with an agriculturally beneficial material, or alternatively includes a holding agent retaining an agriculturally beneficial material, wherein the beneficial material at least includes calcium sulfate, and the beneficial material is selected from the group consisting of fertilizers, insecticides, herbicides and fungicides, with the resulting material being agglomerated into granules.