STABILIZED FERTILIZER COMPOSITIONS AND METHODS FOR PREPARING SAME

Provided in the invention is a stabilized fertilizer composition (I) comprising- Urea (a),- One or more compounds (b),- One or more urease inhibitors (c1) and/or one or more nitrification inhibitors (c2), optionally provided in one or more carriers (d), said compounds (c) being different from compounds (b),- Optionally one or more additives (e) different from any of the above, and- Water (f) in an amount less than about 10 wt% and preferably less than about 5 wt%;wherein compounds (b) are selected from thiosulfates (b1) and/or from polysulfides (b2) and/or from urea-triazone compounds (b3); andwherein the ratio of urea (a) to compounds (b) is from 1:99 to 99:1, preferably from 2:98 to 98:2.Products of the invention can be made in various forms and in different ways. All of the materials of the invention are suitable for use in fertilizers and blend well with solid and liquid fertilizers standardly used. They have excellent shelf life and provide good urea-N protection.